气相色谱法测定代森锰锌在西红柿及土壤中的消解动态  

The Determination of Dispeling Process of Mancozeb in Tomatoes and Soils with Gas Chromatography.

作　　者：高成仁[1] 李莹[1] 于峰 

机构地区：[1]化工部沈阳化工研究院安全评价中心,沈阳110021

出　　处：《农业环境保护》1991年第2期68-70,共3页Agro-Environmental Protection

摘　　要：采用将代森锰锌酸解,以丙酮吸收分解产物CS_2,用气相色谱FPD测定CS_2量的方法,测定了代森锰锌在西红柿和土壤中的残留量,结果表明,代森锰锌在西红柿中的半衰期为2～6天,第三次施药后8～9天,测得西红柿中残留量为0.2～0.4ppm。因此,成熟时收获食用安全。土壤在施药27～29天后,残留量为0.008～0.3ppm。The extract of Mancozeb ingradint was treated with acid, then the product of the decomposition,CS_2 was absorbed by acetone. The amount of CS_2 was measured with gas chromatography FPD.The half-life of Mancozeb in tomatoes was 2～6 days. The residues in tomatoes at the 8～9th days after application were 0.2～0.4ppm and the residues in soils at the 21～29th days after application were 0.008～0.3ppm. The results of residue analysis accord with the standards of FAO/WHO.It could be concluded that Mancozeb belongs to the kind of safe fungicides.

关 键 词：气相色谱 农药 残留量 西红柿 土壤 

分 类 号：X592[环境科学与工程—环境工程]