Pesticides triazines

Table 3 Summary of solid-phase extraction techniques applied to the preparation of water samples for the determination of triazine pesticides...

Liquid chromatography-mass spectrometry has been used to determine triazine pesticides in land-fill soils [18] and dioctadecylmethyl ammonium in sewage sludges [19, 20],... 

Barcarolo R, Tealdo E, Tutta C. 1988. Multiresidue determination of organochlorine and triazine pesticides in homogenized milk. J High Resolution Chromatography Chromatography Comm 11 10746-10748. 

M.S.S. Curren and J. W. King, Solubility of triazine pesticides in pure and modifies subcritical water. Anal. Chem. 73 (2001) 740-745. 

Cyanide is a known or suspected pollutant in approximately 24 pesticide processes. The primary raw materials that favor the generation of cyanides as either byproducts or impurities are cyanamides, cyanates, thiocyanates, and cyanuric chloride. Cyanuric chloride is used exclusively in the manufacture of triazine pesticides. 

Hydrogen cyanide in pure form was prepared first in 1815 by Gay-Lussac. Earher, in 1782, Scheel prepared this compound in dilute solution. The most important apphcation of hydrogen cyanide is to produce methyl methacrylate for methacrylate resins and plastics. Other products made from hydrogen cyanide include potassium cyanide, sodium cyanide, adiponitrile, methionine, cyanuric chloride, cyanogen, nitrilotriacetic acid, and several triazine pesticides. The compound also is used in small amounts for extermination of rodents. 

Triazine pesticides Atrazine, simazine Separated on C-18 reverse phase column and detected by UV at 254 nm mobile phase acetonitrile 0.01 M KH2P04 (65 35)... 

Garcia-Repetto, R., I. Garrido, and M. Repetto (1996). Determination of organochlorine, organophosphorus and triazine pesticide residues in wine by gas chromatography with electron capture and nitrogen-phosphorus detection. J. Assoc. Off. Anal. Chem. Int., 79(6) 1423-1427. 

Hardcastle, A., W. Aherne, and V. Marks (1988). A sensitive enhanced luminescent immunoassay for the triazine pesticides atrazine and simazine. J. Biolumin. Chemilumin., 2 209. 

Pichon, V., L. Chen, N. Durand, F. Le Groffic, and M.C. Hennion (1996). Selective trace enrichment on immunosorbents for the multiresidue analysis of phenylurea and triazine pesticides. J. Chromatogr. A, 725 107-119. 

Psathaki, M., E. Manoussaridou, and E.G. Stephanou (1994). Determination of organophosphorus and triazine pesticides in ground-and drinking water by solid-phase extraction and gas chromatography with nitrogen-phosphorus or mass spectrometric detection. /. Chromatogr. A, 667 241-248. 

Tanabe, A. and K. Kawata (2004). Determination of triazine pesticides and related compounds in environmental water by liquid chromatography-mass spectrometry. Analyt. Sci., 20 227-230. 

Nair, D.R., J.G. Burken, L.A. Licht, and J.L. Schnoor (1993). Mineralization and uptake of triazine pesticide in soil-plant systems. 

Method S69. Method for triazine pesticide in water and waste water. Methods for benzidine, chlorinated organic compounds, pentachlorophenol and pesticides in water and waste water (Interim, Pending Issuance of Methods for Organic Analysis of Water and Wastes), US Environmental Protection Agency, Environmental Monitoring and Support Laboratory (EMSL) September (1978). 

Most of the commercial triazine pesticides are trisubstituted 1,3,5-triazines of the general structure... 

Table IX. Absorption Maxima for Some syi9f-Triazine Pesticides ...

Solid-phase microextraction (SPME), e.g., for the determination of carbamate and triazine pesticides from water, soil leachates, and slurries [85-87]. 

Synonyms Prometryn(e) (preferred name) 2-Methylthio-4,6-bis(isopropylamino)-s-triazine G 34161. Trade names include Caparol, Gesagard, Prometrex, Primatol Q, and Mercasin Chemical/Pharmaceutical/Other Class Sulfur-substituted triazine pesticide Chemical Formula C10H19N5S Chemical Structure ... 

Pichon, V., Chen, L., Hennion, M. C., Daniel, R., Martel, A., Le Goffic, F., Abian, J. and Barcelo, D. 1995. Preparation and evaluation of the immunosorbents for selective trace enrichment of phenylurea and triazine pesticides in environmental waters. Anal. Chem., hl. 2451-2460. 

Very little is known about the natural occurrence of 1,3,5-triazine compounds. Cyanuric acid has been detected in soil humus,68-70 and although melamine71,72 and ammeline73 have been reported as components of certain carbonaceous meteorites, a more recent reinvestigation74 showed that only very small traces of 1,3,5-triazines are present. 1,3,5-Triazines have been identified in soil, crops (fruits, vegetables) and rivers due to the persistence or only partial degradation of 1,3,5-triazine pesticides.469... 

Table II. Mole Fraction Solubilities of Triazine Pesticides in Water...

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