Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Procedures for Analysis of Atrazine and Simazine in Environmental Matrices
Abstract The triazine herbicides, particularly atrazine and simazine, are among the most popular groups of pesticides. A great majority of the triazine herbicides are derived from the s-triazine structure, a six-membered heterocycyle with symmetrically located nitrogen atoms that are substituted at the 2, 4, and 6 ring positions. Table 1 contains a list of abbreviations and acronyms used in this article. Table 2 presents a listing of the chemical names, designations and CAS numbers for members of the triazine herbicide class. The s-triazines are stereochemically stable and certain of their degradation products are environmentally persistent, remaining in soil after application for several months to many years (Pacácková et al. 1996). The structures for atrazine and simazine, and an overview of their physical and chemical properties, are presented in Fig. 1 and Table 3, respectively. Atrazine and simazine herbicides are readily absorbed by plant roots. After entering plants, these herbicides act by interfering with the enzyme systems responsible for the photolysis of water, thereby halting photosynthesis. Triazines are effective as pre- and postemergence herbicides for broad spectrum control of annual and perennial grasses and annual broad-leaved weeds (Dean et al. 1996).
Procedures for Analysis of Atrazine and Simazine in Environmental Matrices
Abstract The triazine herbicides, particularly atrazine and simazine, are among the most popular groups of pesticides. A great majority of the triazine herbicides are derived from the s-triazine structure, a six-membered heterocycyle with symmetrically located nitrogen atoms that are substituted at the 2, 4, and 6 ring positions. Table 1 contains a list of abbreviations and acronyms used in this article. Table 2 presents a listing of the chemical names, designations and CAS numbers for members of the triazine herbicide class. The s-triazines are stereochemically stable and certain of their degradation products are environmentally persistent, remaining in soil after application for several months to many years (Pacácková et al. 1996). The structures for atrazine and simazine, and an overview of their physical and chemical properties, are presented in Fig. 1 and Table 3, respectively. Atrazine and simazine herbicides are readily absorbed by plant roots. After entering plants, these herbicides act by interfering with the enzyme systems responsible for the photolysis of water, thereby halting photosynthesis. Triazines are effective as pre- and postemergence herbicides for broad spectrum control of annual and perennial grasses and annual broad-leaved weeds (Dean et al. 1996).
Procedures for Analysis of Atrazine and Simazine in Environmental Matrices
Barchańska, Hanna (Autor:in) / Baranowska, Irena (Autor:in)
01.01.2009
32 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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