The Lachat QuickChem 8500 Series 2 Flow Injection Analysis System is a flow injection colorimetric analyzer used for the analysis of inorganic N and phosphate in soil extracts and water samples. We use the system to determine nitrate (+ nitrite) and ammonium. Our configuration consists of the XYZ Autosampler, ASX-520 Series; Precision Dilutor System, PDS200; Reagent Pump, RP-150 Series; System Unit QuickChem 8500 Series 2; and a computer system with Omnion FIA software from Lachat. The System Unit has three channels: one for determining ammonia with QuickChem Method 12-107-06-2-F, which uses a sodium salicylate-based procedure that requires a standard heating unit and is read at 660 nm; one for determining nitrate + nitrite with Method 12-107-04-1-J; which uses a sulfanilamide/NED cadmium reduction procedure and is read at 520 nm; and an additional channel that could be set up for determination of either nitrite or orthophosphate. The instrument is calibrated against purchased nitrate and ...

TY - JOUR. T1 - Flow injection spectrophotometric determination of anionic polyelectrolytes using the cationic dyes. AU - Masadome, T.. N1 - Copyright: Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.. PY - 2001. Y1 - 2001. N2 - The reaction of the cationic dye, crystal violet (CV) with the anionic polyelectrolytes such as potassium poly (vinyl sulfate) (PVSK) results in a decrease of the absorbance of CV at the maximum absorption wavelength (590 nm). This change of the absorption spectra of the CV was applied to the determination of anionic polyelectrolytes using flow injection analysis (FIA) method. Anionic polyelectrolytes such as PVSK and carageenan could be determined in the concentration range from 5 × 10-7 to 2 × 10-5-mol/l by the proposed method. The detection limit was ca. 1 × 10-7M for PVSK. The sampling rate was ca. 25 samples h-1. The coexistence of foreign ions (Na+, Cl-, Br-, K+, SO2-,4, NO-3) at 200 times excess to an anionic polyelectrolyte did not ...

A flow injection analysis (FIA) to quantify imidacloprid was developed based upon (1) ultraviolet (254 nm) photochemical dissociation of imidacloprid to produce nitrite, (2) chemical reduction of the nitrite to nitric oxide by iodide in acid, (3) removal of gas-phase nitric oxide from the aqueous stream using a membrane separator, and (4) detection of the nitric oxide by chemiluminescent reaction with ozone. The cross-reactivity of imidacloprid with eight metabolites of imidacloprid was determined using a commercial ELISA kit and the FIA method. While the ELISA kit demonstrated varying degrees of cross-reactivity, cross-reactivity in the FIA method was observed for only the N-nitro and N-nitroso metabolites. The optimized analytical FIA method, FIA provides a linear response in imidacloprid concentration over four orders of magnitude, has a limit of detection of 5.6 pmol (1.5 ng) of imidacloprid, and exhibits an inter-day precision of 0.4%. Spike-recoveries by FIA demonstrated excellent recovery ...

A flow injection analysis (FIA) to quantify imidacloprid was developed based upon (1) ultraviolet (254 nm) photochemical dissociation of imidacloprid to produce nitrite, (2) chemical reduction of the nitrite to nitric oxide by iodide in acid, (3) removal of gas-phase nitric oxide from the aqueous st.... Full description. ...

15th Internat.Conf.on Solid-State Sensors, Actuators and Microsystems (Transducers 2009), Denver, Colo., June 21-25, 2009 Technical Digest Piscataway, N.J. : IEEE, ...

A new flow-injection chemiluminescence method for the determination of iron is described. It is based upon the chemiluminescence reaction of iron (Ⅱ)-lucigenin system with Jones reductor. The chemiluminescence signal-to-noise ration can be improved apparently by the addition of cetyltrimethyl- ammonium bromide and emulsor OP. The present method has a wide linear of 1×10-11～1×10-5 g/mL for Fe(Ⅱ). The detection limit is 2 × 10-12 g/mL. The relative standard deviation is 2.0% (1× 10-8 g/mL Fe, n = 11). The method has been applied to the determination of iron in hair samples with satisfactory results. The mechanism of this reaction is also investigated in detail.

A dynamic development of methodologies of analytical flow injection measurements during four decades since their invention has reinforced the solid position of flow analysis in the arsenal of techniques and instrumentation of contemporary chemical analysis. With the number of published scientific papers exce

TY - JOUR. T1 - Mathematical modelling of a flow-injection system with a membrane separation module. AU - Kolev, S.D.. AU - Kolev, Spas D.. AU - van der Linden, W.E.. PY - 1992. Y1 - 1992. N2 - A mathematical model for a flow-injection system with a membrane separation module based on the axially dispersed plug flow model was developed. It takes into account the geometrical dimensions and dispersion properties of the main sections of the manifold, the mass transfer in the channels of the separation module and the characteristics of the membrane (thickness and diffusion coefficient within it). The model was solved analytically in the Laplace domain. The inverse transformation was found to give satisfactory results for reactor Peclet numbers less than 120. Otherwise a numerical solution based on the implicit alternating-direction finite difference method was preferred. The adequacy of the model was confirmed experimentally on a flow-injection manifold with a parallel-plate dialysis module. The ...

This standard is formulated for the purposes of enforcing the Environment Protection Law of the Peoples Republic of China and Water Pollution Prevention and Control Law of the Peoples Republic of China, protecting the environment, safeguarding the public health, and setting standards for the determination of sulfide in waters. This standard specifies the flow injection analysis (FIA) and methylene blue spectrophotometric method used to determine sulfide in surface water, groundwater, municipal wastewater, and industrial sewage. This standard is the original version. ...

Sequential injection analysis for automation of the Winkler methodology, with real-time SIMPLEX optimization and shipboard application. Energy Technology Data Exchange (ETDEWEB). Horstkotte, Burkhard; Tovar Sanchez, Antonio; Duarte, Carlos M. [Department of Global Change Research, IMEDEA (CSIC-UIB) Institut Mediterrani d' Estudis Avancats, Miquel Marques 21, 07190 Esporles (Spain); Cerda, Victor, E-mail: [email protected] [University of the Balearic Islands, Department of Chemistry Carreterra de Valldemossa km 7.5, 07011 Palma de Mallorca (Spain). 2010-01-25. A multipurpose analyzer system based on sequential injection analysis (SIA) for the determination of dissolved oxygen (DO) in seawater is presented. Three operation modes were established and successfully applied onboard during a research cruise in the Southern ocean: 1st, in-line execution of the entire Winkler method including precipitation of manganese (II) hydroxide, fixation of DO, precipitate dissolution by confluent ...

Liquid Waveguide Capillary Cells (LWCC) are optical sample cells that combine an increased optical pathlength (10-100cm) with small sample volumes (0.31-3.14mL) for ultraviolet (UV) and visible (VIS) absorbance spectroscopy.

A dry supplement injection system and method for fertigation of crops, and a micronized supplement for use in the dry supplement injection system to fertilize the crops. The injection system is connectable to a water supply to produce a slurry with the supplement which is continuously introduced into a flow of irrigation water for watering the crops. The injection system includes a hopper having a cylindrical upper portion having a supplement inlet opening and a tapered lower portion terminating at a slurry outlet opening. A perforated funnel assembly is disposed within the hopper that includes an inverted, perforated funnel with a vertically disposed inlet pipe that extends through an upper opening of the funnel and which is clamped to the funnel, with a spray nozzle connected to a lower end of the inlet pipe to spray water onto an inner surface of the funnel. An inlet water pipe system includes a main pipe that connects to the water source through an outer wall of the hopper to the inlet pipe and the

A green, simple, accurate and highly sensitive sequential injection lab-at-valve procedure has been developed for the simultaneous determination of ascorbic acid (Asc) and rutin using 18-molybdo-2-phosphate Wells-Dawson heteropoly anion (18-MPA). The method is based on the dependence of the reaction rate between 18-MPA and reducing agents on the solution pH. Only Asc is capable of interacting with 18-MPA at pH 4.7, while at pH 7.4 the reaction with both Asc and rutin proceeds simultaneously. In order to improve the precision and sensitivity of the analysis, to minimize reagent consumption and to remove the Schlieren effect, the manifold for the sequential injection analysis was supplemented with external reaction chamber, and the reaction mixture was segmented ...

custom built flow injection analysis instruments for scientific and industrial research using chemiluminescence and spectrophotometric detection.

Monitoring of patients with inherited metabolic disorders (IMDs) using dried blood spot (DBS) specimens has been routinely used since the inception of newborn screening (NBS) for phenylketonuria in the 1960s. The introduction of flow injection analysis tandem mass spectrometry (FIA–MS/MS) in the 1990s facilitated the expansion of NBS for IMDs. This has led to increased identification of patients who require biochemical monitoring. Monitoring of IMD patients using DBS specimens is widely favoured due to the convenience of collecting blood from a finger prick onto filter paper devices in the patient’s home, which can then be mailed directly to the laboratory. Ideally, analytical methodologies with a short analysis time and high sample throughput are required to enable results to be communicated to patients in a timely manner, allowing prompt therapy adjustment. The development of ultra-performance liquid chromatography (UPLC–MS/MS), means that metabolic laboratories now have the

Geneva : Brussels ISO ; IDF 2001 . 3 v. , Contenido: v.1: Method using cadmium reduction and spectrometry ; v.2: Method using segmented flow analysis [routine method] ; v.3: Method using cadmium reduction and flow injection analysis with in-line dialysis [routine method] ...

D5673 Standard Test Method for Elements in Water by Inductively Coupled Plasma-Mass Spectrometry. D5907 Standard Test Methods for Filterable Matter (Total Dissolved Solids) and Nonfilterable Matter (Total Suspended Solids) in Water. D6247 Standard Test Method for Determination of Elemental Content of Polyolefins by Wavelength Dispersive X-ray Fluorescence Spectrometry. D7237 Standard Test Method for Free Cyanide and Aquatic Free Cyanide with Flow Injection Analysis (FIA) Utilizing Gas Diffusion Separation and Amperometric Detection. D7847 Standard Guide for Interlaboratory Studies for Microbiological Test Methods. E37 Standard Test Methods for Chemical Analysis of Pig Lead. E53 Standard Test Method for Determination of Copper in Unalloyed Copper by Gravimetry. E314 Standard Test Methods for Determination of Manganese in Iron Ores by Pyrophosphate Potentiometry and Periodate Spectrophotometry Techniques. E353 Standard Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and ...

This study presents the development of a compact and portable in-situ analyzer for nutrient determination. The analyzer can detect the seawater concentrations of nitrate, nitrite, phosphate, ammonia and silicate based on spectrometric method and flow injection analysis with the use of peristaltic pump, 3-port solenoid valves and flow cells. Detection...

Sonnleitner 4 Real Time Considerations A notorious underestimation of the dynamic properties of microbial and cellular populations results from matching the duration of the respective batch cultivations to the relevant time constant of the biosystem under investigation. However, metabolic regulation of enzyme activities and fluxes often takes place on a time scale of seconds rather than days although the latter may also be true. It is therefore in the scope of promoting biotechnological research to adopt and develop appropriate experimental concepts, methodologies and equipment [397]. The stability of enzymes in the sensing systems often limits the use of bio- Fig. 19. Schematic design of a flow injection analysis (FIA) system. A selection valve (top) allows a selection between sample stream and standard(s). The selected specimen is pumped through an injection loop. Repeatedly, the injection valve is switched for a short while so that the contents of the loop are transported by the carrier ...

A simple, fast and sensitive quantification method for the drug metformin in dog serum was developed using flow injection analysis (FIA)- tandem mass spectrometry (MS/MS). The method was fully validated according to ...

A fully automated bioreactor is used that maintains the physicochemical and biological factors to optimum level and maintains freely the suspend-ed cells in an agitated low viscous liq-uid medium. The most suitable biore-actor used is a compact-loop bioreac-tor that consists of marine impellers (Fig. 6.6). It also relies on the inte-grated monitoring and control of phys-ical, chemical, biological and biochem-ical parameters.. As compared to bacteria, animal cells grow slowly. This results in bringing the cells in unfavourable metabolic state due to even small changes in culture. The main carbon and energy sources are glucose and glutamine. Lactate and ammonia are their metabolic products that affect growth and productivity of cells. Therefore, on-line monitoring of glucose, glutamate and ammonia can be carried out by on-line flow injection analysis (FIA) by using gas chromatography (GC), high performance liquid chromatography (HPLC), etc. ...

Polar components in fuels may enable differentiation between fuel types or commercial fuel sources. A range of commercial fuels from numerous sources were analyzed by flow injection analysis/electrospray ionization/mass spectrometry without extensive sample preparation, separation, or chromatography. This technique enabled screening for unique polar components at parts per million levels in commercial hydrocarbon products, including a range of products from a variety of commercial sources and locations. Because these polar compounds are unique in different fuels, their presence may provide source information on hydrocarbons released into the environment. This analysis was then applied to mixtures of various products, as might be found in accidental releases into the environment. Copyright ?? Taylor & Francis Group, LLC....

OBJECTIVES: Metabolomics is an emerging science based on diverse high throughput methods that are rapidly evolving to improve metabolic coverage of biological fluids and tissues. Technical progress has led researchers to combine several analytical methods without reporting the impact on metabolic coverage of such a strategy. The objective of our study was to develop and validate several analytical techniques (mass spectrometry coupled to gas or liquid chromatography and nuclear magnetic resonance) for the metabolomic analysis of small muscle samples and evaluate the impact of combining methods for more exhaustive metabolite covering. DESIGN AND METHODS: We evaluated the muscle metabolome from the same pool of mouse muscle samples after 2 metabolite extraction protocols. Four analytical methods were used: targeted flow injection analysis coupled with mass spectrometry (FIA-MS/MS), gas chromatography coupled with mass spectrometry (GC-MS), liquid chromatography coupled with high-resolution mass

Concentration, Mercury, PH, Time, Urine, Carbon, Perchloric Acid, Adsorption, Electrode, Human, Limit Of Detection, Pulse, Tablets, Association, Behavior, Detection Limit, Dosage Forms, Electrodes, Flow Injection Analysis, Injection

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Using the sequential injection analysis with the spectrophotometric detector, the kinetic method for the determination of cysteine was developed and validated. The kinetic method is based on redox reaction where cysteine as a reductant, reduces green copper(II) neocuproine complex to copper(I) neocuproine complex. The formated yellow-orange copper(I) neocuproine complex shows an absorption maximum at wavelength of 458 nm. The optimum parameters of the flow system were determined by a univariate method and as a result the calibration curve was constructed. Linearity was achieved for the concentration range from 6.0  10 7 mol L 1 to 8.0  10 5 mol L 1 and it was described with the equation y = 3690.4 x + 0.0019 and correlation coefficient R 2 = 0.9997. The calculated limit of detection is 1.8  10 -7 mol L -1 and the limit of quantification is 6.0  10 7 mol L 1 . The influence of foreign substances commonly found in the composition of the pharmaceutical preparations was ...

Further on, we investigated employment of an automated system with a sequential injection analysis (SIA) manifold based on a syringe pump and multiport valve coupled with CE-C4D. Hydrodynamic pumping was introduced for electrophoretic separation of most commonly used artificial sweeteners. Compounds were determined in their anionic form at a high pH. Without any surfactant or modifier to reverse the electroosmotic flow, higher separation efficiency was noticed. The conditions were optimized either for better detection limits or for shorter analysis time. In addition, band broadening was observed due to pressure caused by hydrodynamic pumping. Therefore, the requirement of the narrow capillary of 10 µm for sensitive detection was necessary. The best compromise for differences between analysis time and separation efficiency was found. This coupled system setup approved to complete all operation steps to perform complex measurements with possibility to change any of the parameters during the ...

The Asia Pacific needle free injection system market is anticipated to grow at a CAGR of 16.5% during 2016 to 2022. The market has generated the revenue $ 2062 million in 2016 and is anticipated to reach up to $ 5143 million by 2022. Needle free technology is also called as jet injectors. It is widely used in mass vaccination programs for patients suffering from polio, smallpox, and measles, it keeps product supply cleaner. Needle free injection systems are new tradition by which a variety of medicines are introduced in patients without piercing the skin with the use of conventional needle. These systems functions on the mechanism in which medicine, in the form of liquid is forced with an eminent speed through a petite orifice that is held against the skin. Needle free injection system consists of technologies, which do not have a needle but make use of electrophoresis to drive drugs through the skin. This technology avoid several weakness associated with the conventional needle, such as risk of ...

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Ford owners face Fuel System, Gasoline Fuel Injection System Fuel Rail problems. Do not ignore abnormal Fuel System, Gasoline Fuel Injection System Fuel Rail issues. What causes Fuel System, Gasoline Fuel Injection System Fuel Rail failures and issues? Consumer Took Car To Ford Dealer Regarding Recalls. Dealer Repaired 2 Recalls But

The PerkinElmer FIMS 100 is a compact, easy-to-operate mercury analyzer with an integrated flow injection system for cold vapor mercury AA.

Dispersion processes occurring in flow injection (FI) systems were reviewed. The basic characteristics of dispersion and problems encountered in understanding dispersion as it applies to FI systems were considered. Obtaining reproducible dispersion is the basic principle underling FI systems. A uniformly acceptable mathematical description of the dispersion process, however, has not been developed

An excavation system for forming a wellbore through a subterranean formation, the system employing pressurized drilling fluid with impactors mixed therein. The pressurized fluid with impactors is directed to a drill string having a drill bit with nozzles on its lower end. The fluid impactor mixture is discharged from the nozzles and against the formation, wherein the impactors contact, compress, and fracture the formation to excavate through the formation. The system includes an impactor injection system that injects impactors into a stream of pressurized drilling fluid to form the mixture. The injection system operates at substantially the same pressure as the pressurized drilling fluid.

An emergency multi-medication pump injection system is designed for use in rapidly and automatically calculating and administering multiple medications in an emergency setting. The system includes a compact, portable housing comprising a plurality of medication ports, each port configured to receive a corresponding ampoule containing a corresponding medication. The system further includes at least one pump on or within the housing for dispensing a calculated dosage amount of one or more medications from the ampoules, at least one delivery tube for conveying the medication(s) from the system for delivery to the patient, and safety means for ensuring that each ampoule can only be installed in a port to which the particular ampoule corresponds. The pump injection system may include data inputs for inputting data relating to patient weight, medication concentration, medication dosage, and the like.

An emergency multi-medication pump injection system is designed for use in rapidly and automatically calculating and administering multiple medications in an emergency setting. The system includes a compact, portable housing comprising a plurality of medication ports, each port configured to receive a corresponding ampoule containing a corresponding medication. The system further includes at least one pump on or within the housing for dispensing a calculated dosage amount of one or more medications from the ampoules, at least one delivery tube for conveying the medication(s) from the system for delivery to the patient, and safety means for ensuring that each ampoule can only be installed in a port to which the particular ampoule corresponds. The pump injection system may include data inputs for inputting data relating to patient weight, medication concentration, medication dosage, and the like.

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Compare 1999 Ford Escort Nitrous Oxide Injection System Kit brands. Check prices & reviews on aftermarket & stock parts for your 1999 Escort Nitrous Oxide Injection System Kit. Order your parts online or pick them up in-store at your local Advance Auto Parts.

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The 2018-2023 World Outlook for Automotive Fuel Injection Systems The 2018-2023 World Outlook for Automotive Fuel Injection Systems This study covers the world outlook for automotive - Market research report and industry analysis - 10634773

A short Fused-Core particle column offered higher efficiency, high mass capacity, wider pH range, and lower price vs monolithic columns typically used in Sequential Injection Chromatography.

The research presented in this thesis develops Bead Injection techniques for application in immunological research and with the aim of developing rapid screening methods for use in clinical settings.A method is introduced, called label dilution, which is analogous to the well-established isotope dilution method. The principle is tested on a model system of commercially available antibodies and protein-coated Sepharose beads and implemented using Bead Injection in the lab-on-valve format. This micro-scale method uses a labeled form of the target molecule as an internal standard. Label dilution employs ratiometric measurements using the absorbance signals from the label and the target molecules for quantitative determination of an analyte. The label dilution method is shown to discriminate between selective and non-selective binding and provides a means for monitoring bioligand interactions in real time. This Bead Injection method provides a sensitive, automated technique for the determination of ...

Because excessive using of pesticides poses a threat to the environment and to human health, development of low-cost and sensitive methods for analysis of pesticides in the environment is needed. Several bacteria can release halide ions from the molecules of halogenated hydrocarbons. This can be used in a device for analysis of halogenated hydrocarbons in the environment by quantification of the halide anions. Here we directed our attention to selecting an instrument for detection of chloride anions. We tested three different detectors, amperometric, and coulometric, both coupled with flow-injection analysis and charged aerosol, coupled with high performance liquid chromatography. Detection limits (3 × S/N) for measurement of chloride anions by use of these detectors was 30 µM (charged aerosol), 100 nM (coulometric), and 1 nM (amperometric). Because of its lowest detection limit for chloride anions and the many technical possibilities of miniaturization, the amperometric detector was used to ...

Title:A Fast and Efficient Chemiluminescence Method for Determination and Pharmacokinetic Study of Paclitaxel in Rat Plasma. VOLUME: 10 ISSUE: 4. Author(s):Xunyu Xiong, Xinfeng Zhao, Yajuan Li and Zhenghua Song. Affiliation:Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xian, 710069, P. R. China.. Keywords:Paclitaxel, pharmacokinetic, sulfobutylether-β-cyclodextrin, chemiluminescence, flow injection, plasma.. Abstract:We have developed an efficient method for fast determination and pharmacokinetic study of paclitaxel in rat plasma. The method involved a flow-injection chemiluminescence (FI-CL) technique that depends on the inhibition of a luminol/ sulfobutylether-β-cyclodextrin (SBE-β-CD) - chemiluminescence (CL) reaction system by paclitaxel. A linear relationship was found between the loss of CL and the quantities of paclitaxel with an equation of ΔI = (37.9±2.4) lnC + ...

An automatic flow injection (FIA) and two possible reference gas chromatographic (liquid and headspace sampling GC) methods including appropriate sample preparation were developed and validated for determination of acetone in milk. The methods were tested by preserved raw milk samples. The FIA results were compared with data obtained by GC determinations. It was found that FIA procedure is suitable for rapid automated measurement of acetone in the range of 0-5 mmol l-1 in milk, therefore it is a promising analytical method for ketosis monitoring in dairy farms. ...

Mercury Lamp for PerkinElmer Flow Injection Mercury System (FIMS) from PerkinElmer. An item from our Background Correction Sources for 3100 Spectrometer.

Agonists are a group of illegal feed additives. In this paper, it was found that the light emission produced by the oxidation of luminol by potassium ferricyanide was enhanced by the -agonists (ractopamine, salbutamol, and terbutaline). Based on chemiluminescence phenomenon, a novel, rapid, and sensitive microflow injection analysis system on a microfluidic glass chip was established for determination of the -agonists. The chip was fabricated from two glass plates (64 mmx32 mm) with microchannels of 200 m width and 100 m depth. The detection limits were achieved at 2.0x10(-8)mol/L of ractopamine, 1.0x10(-8)mol/L of terbutaline and 5.0x10(-7)mol/L of salbutamol. In this report, our method was applied for determination of the -agonists in swine hair from three different sources with satisfactory results ...

sundoc Migration; Titel: Automatische Flow Injection Analysis-Verfahren für die Lebensmittel-, Umwelt- und klinische Analytik, Verfasser: Mana, Hasson, 1998 ; Halle, Saale : Universitäts- und Landesbibliothek ; Göttingen : Niedersächsische Staat- und Universitätsbibliothek