• Solid Phase Extr
  • Solid-phase microextraction, or SPME, is a solid phase extraction sampling technique that involves the use of a fiber coated with an extracting phase, that can be a liquid (polymer) or a solid (sorbent), which extracts different kinds of analytes (including both volatile and non-volatile) from different kinds of media, that can be in liquid or gas phase. (wikipedia.org)
  • Analytical laboratories use solid phase extraction to concentrate and purify samples for analysis. (wikipedia.org)
  • 2001
  • Klaus K. Unger studied chemistry at the Technical University of Darmstadt, Germany, where he also received his PhD. From 1977 to 2001 he was a professor in chemistry at the Johannes-Gutenberg University, Mainz, Germany, before heading a research group in bioseparations at Merck KGaA, Darmstadt, Germany, for eight years. (wiley.com)
  • detection
  • These tools include small-molecule design, synthesis, derivatization, handling, and detection as well as advances in laboratory automation, robotics, and medicinal chemistry as applied to high-throughput screening (HTS). (stanford.edu)
  • PAD is most often used for detection of carbohydrates after an anion exchange separation, but further development of related techniques show promise for amines, reduced sulfur species, and other electroactive compounds. (wikipedia.org)
  • Flowing-afterglow mass spectrometry (FA-MS), is an analytical chemistry technique for the sensitive detection of trace gases. (wikipedia.org)
  • Passive sampling techniques have been able to provide a time-integrated sample of water contamination with low detection limits and in situ extraction of analytes. (wikipedia.org)
  • Applications
  • Applications researched so far include: Batch consistency analysis Blend uniformity analysis Polymorph and pseudopolymorph discrimination Monitoring of supersaturation of solutions and rates of outgassing The Hot chocolate effect, the physical phenomenon on which the technique is based. (wikipedia.org)
  • Since Curie's time, applications of radioanalytical chemistry have proliferated. (wikipedia.org)
  • practitioners
  • Modern advances in nuclear and radiochemistry research have allowed practitioners to apply chemistry and nuclear procedures to elucidate nuclear properties and reactions, used radioactive substances as tracers, and measure radionuclides in many different types of samples. (wikipedia.org)
  • Professor
  • is Professor of Chemistry and Environmental Science at the New Jersey Institute of Technology. (google.com)
  • American Association of State Highway and Transportation Officials, AASHTO Guide for download handbook of instrumental techniques for analytical of professor men, American Association of State Highway and Transportation Officials, Washington, DC, USA,( 1993). (sierrasignsaz.com)
  • mass
  • Gravimetric techniques use precipitation or volatilization to determine the mass of the analyte from its ionic mass. (news-medical.net)
  • Coulometric techniques: This set of techniques helps to determine the mass of matter transformed by electrolysis from the amount of electric current used or produced during the reaction. (news-medical.net)
  • In 2002, Koichi Tanaka, a longstanding employee, won the Nobel Prize in Chemistry for developing a method of mass spectrometric analysis of biological macromolecules. (wikipedia.org)
  • molecular
  • Host-guest chemistry encompasses the idea of molecular recognition and interactions through noncovalent bonding. (wikipedia.org)
  • Host-guest chemistry is observed in inclusion compounds, Intercalation compounds, clathrates, and molecular tweezers. (wikipedia.org)
  • Instrumental
  • Instrumental techniques are increasingly employed at higher levels of research, and the same instrument is often sufficient to separate, identify and quantitate the analyte. (news-medical.net)
  • analytes
  • While even the best analytical techniques cannot rectify problems generated by sloppy sample preparation, this less "sexy" step between the point at which analytes are transferred from the sample matrix to a form suitable for analysis is often overlooked. (spectroscopynow.com)
  • analysis
  • Each of the following chapters will describe the techniques used in forensic analysis. (wiley.com)
  • Radioanalytical chemistry focuses on the analysis of sample for their radionuclide content. (wikipedia.org)
  • In the multivariate module one can choose between three different techniques - SVM (support vector machine), PLS-DA (partial least squares discriminant analysis) and Random Forests for classifying and selecting metabolites or clinical variables for an optimal ROC performance. (wikipedia.org)
  • science
  • Analytical chemistry is a science in which materials are separated, identified and quantified. (news-medical.net)
  • Barbara joined the staff at the University of Technology, Sydney, Australia in 1995, where she is currently a Senior Lecturer in the Department of Chemistry, Materials and Forensic Science. (wiley.com)
  • commonly
  • The most commonly used technique for the extraction of a compound from an aqueous solution is liquid-liquid extraction (LLE). (news-medical.net)
  • Conventional X-ray generators are most commonly used, because their output can readily be "tuned" for the application, and because higher power can be deployed relative to other techniques. (wikipedia.org)
  • physical
  • After obtaining her PhD in 1993, she took up a position as Lecturer in Physical Chemistry at the University of Greenwich in London. (wiley.com)
  • Sample
  • books.google.com - The importance of accurate sample preparation techniques cannot be overstated--meticulous sample preparation is essential. (google.com)
  • Even the best analytical techniques cannot rectify problems generated by sloppy sample pretreatment. (google.com)
  • SFE can be used as a sample preparation step for analytical purposes, or on a larger scale to either strip unwanted material from a product (e.g. decaffeination) or collect a desired product (e.g. essential oils). (wikipedia.org)
  • field
  • The field of radioanalytical chemistry was originally developed by Marie Curie with contributions by Ernest Rutherford and Frederick Soddy. (wikipedia.org)
  • High
  • James Keeler, Editor-in-Chief of Magnetic Resonance in Chemistry, discusses the high-resolution NMR of liquid samples, concentratring exclusively on spin-half nuclei (mainly 1H and 13C). (spectroscopynow.com)
  • In a high school chemistry class, a typical use would be to show the presence of hydrogen (after electrolysis of water, or by reacting a metal with an acid). (wikipedia.org)
  • Metabolomics data sets produced by high throughput analytical chemistry techniques typically consist of large matrices containing multiple values for multiple samples. (wikipedia.org)
  • Various
  • Again, conjugating biomolecules with small probe molecules can pave the way for various biochemical analytical tests, which are less cumbersome and much faster than traditional testing techniques. (news-medical.net)
  • Digital
  • This signal is processed by a multichannel analyser (MCA) which produces an accumulating digital spectrum that can be processed to obtain analytical data. (wikipedia.org)
  • samples
  • Experimental and analytical studies for natural and synthetic samples under extreme conditions have advanced considerably in the past few years. (confex.com)