The acaricide, dicofol, is a well-known pesticide and partly a substitute for dichlorodiphenyltrichloroethane (DDT). Only few reports on environmental occurrence and concentrations have been reported calling for improvements. Hence, an analytical method was further developed for dicofol and dichlorobenzophenone (DCBP) to enable assessments of their environmental occurrence. Concentrated sulfuric acid was used to remove lipids and to separate dicofol from DCBP. On-column injection was used as an alternative to splitless injection to protect dicofol from thermal decomposition. By the method presented herein, it is possible to quantify dicofol and DCBP in the same samples. Arctic cod (Gadus morhua) were spiked at two dose levels and the recoveries were determined. The mean recovery for dicofol was 65% at the low dose (1 ng) and 77% at the high dose (10 ng). The mean recovery for DCBP was 99% at the low dose (9.2 ng) and 146% at the high dose (46 ng). The method may be further improved by use of ...
Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment. Personal protection: complete protective clothing including self-contained breathing apparatus. ...
Immune System Flowcharts Cellular T Cell Mediated Response Flow Cellular T Cell Mediated Immune Response Flow Chart Flowcharts flowchart examples flowchart software flowchart template Draw.io fits the bill for anyone looking for a completely free flowchart solution. All you need to do to get started is choose your storage space, which gets remembered for later. Options include Google Drive, Dropbox, OneDrive, and local storage. If you need collaboration with others, Google Drive is the best choice since draw.io leverages Google Drives collaboration features. Find Your Next Flowcharts
Kelthane is definitely good for RSMs. As is humidity. Hurry up, cos RSMs can take a plant down faster than anything else Ive ever seen. Seriously, your plants _hours_ are numbered. jbc ...
The greenhouse environment is not only nearly ideal for growing plants; it can produce outstanding pest infestations, as you surely have discovered. Mites seem to be one of the great levelers among growers, common to many greenhouse crops and production systems around the world. They are most notorious in long-term, protected growing situations such as greenhouse tomatoes, stock plants or cut flowers but are also often seen at home on bedding plants and even happily attack plugs, although they rarely have sufficient opportunity to do so.. About 10 years ago, the situation for greenhouse mite control was looking rather bleak, with just a few dwindling options available such as Pentac and Kelthane, several pyrethroids, Thiodan, diazinon and insecticidal soap. Some of these products have been phased out (Pentac and diazinon/Knox-Out, for example) and the future of others is in question.. Today, the situation is dramatically different. The good news is that more than 15 miticides are now available ...
INSECTS APPLE MAGGOT 1st catch, perdiction of activity. CMB- update, comprehensive article. NEW PESTS Mullein plant bug. CHEM NEWS Kelthane SOW. PHEROMONE TRAP CATCHES Geneva, Hudson Valley. UPCOMING PEST EVENTS. PEST FOCUS OBLR DD/sampling update, STLM 2nd brood DD/sampling update ...
The white rot fungus Phanerochaete chrysosporium degraded DDT [1,1,-bis(4-chlorophenyl)-2,2,2-trichloroethane], 3,4,3,4-tetrachlorobiphenyl, 2,4,5,2,-4,5-hexachlorobiphenyl, 2,3,7,8-tetrachlorodibenzo-p-dioxin, lindane (1,2,3,4,5,6-hexachlorocylohexane), and benzo[a]pyrene to carbon dioxide. Model studies, based on the use of DDT, suggest that the ability of Phanerochaete chrysosporium to metabolize these compounds is dependent on the extracellular lignin-degrading enzyme system of this fungus. ...
A Hydrogenomonas cleaved one of the rings of p,p-dichlorodiphenylmethane, a product of DDT metabolism, to yield p-chlorophenylacetate and further metabolized the latter compound. Products of microbial degradation of other diphenylmethanes were also identified. Substituents on the methylene-carbon and para-chloro substitution are critical factors governing resistance of DDT and related compounds to aerobic metabolism and decomposition by the bacterium. ...
The aerobic biodegradability of the high explosive CL-20 by activated sludge and the white rot fungus Phanerochaete chrysosporium has been investigated. Although activated sludge is not effective in degrading CL-20 directly, it can mineralize the alkaline hydrolysis products. Phanerochaete chrysosporium degrades CL-20 in the presence of supplementary carbon and nitrogen sources. Biodegradation studies were conducted using various nutrient media under diverse conditions. Variables included the CL-20 concentration; levels of carbon (as glycerol) and ammonium sulfate and yeast extract as sources of nitrogen. Cultures that received CL-20 at the time of inoculation transformed CL-20 completely under all nutrient conditions studied. When CL-20 was added to pre-grown cultures, degradation was limited. The extent of mineralization was monitored by the 14CO2 time evolution; up to 51% mineralization was achieved when the fungus was incubated with [14C]-CL-20. The kinetics of CL-20 biodegradation by Phanerochaete
2,2,2-Trichloro-1-(1-methyl-1H-pyrrol-2-yl)-1-ethanone chemical properties, What are the chemical properties of 2,2,2-Trichloro-1-(1-methyl-1H-pyrrol-2-yl)-1-ethanone 21898-65-7, What are the physical properties of 2,2,2-Trichloro-1-(1-methyl-1H-pyrrol-2-yl)-1-ethanone ect.
1-fluoro-4-(2,3,3-trichloro-1-cyclopropen-1-yl)benzene - chemical structural formula, chemical names, chemical properties, synthesis references