Degradation Dynamics of the Insecticide: Clothianidin (Dantop 50 % WDG) in a Tea Field Ecosystem

被引：13

作者：

Chowdhury, Sutapa ^{[1
]}

Mukhopadhyay, Soumyadeep ^{[2
]}

Bhattacharyya, Anjan ^{[1
]}

机构：

[1] Bidhan Chandra Krishi Viswavidyalaya, Dept Agr Chem, Mohanpur 741252, W Bengal, India

[2] Univ Kalyani, Dept Chem, Kalyani 741235, W Bengal, India

来源：

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2012年 / 89卷 / 02期

关键词：

Persistence; Residue; Clothianidin; Tea; HPLC;

D O I：

10.1007/s00128-012-0671-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The fate of clothianidin [(E)-1-(2-chloro-1, 3-thiazol-5-ylmethyl)-3-methyl-2-nitroguanidine] applied to tea plant was studied at two location in West Bengal, India. The insecticide was applied in Tea field at two doses @30 and 60 g.a.i./ha during June-July 2009. Solid-phase extraction and liquid-liquid extraction was employed for the determination of this insecticide in tea samples. Clothianidin residues were analyzed and estimated quantitatively by HPLC at lambda(max) 250 nm. The observed half life values of made tea and green tea leaf ranges from 3.71 to 4.07 days and 4.07 to 4.49 days respectively.

引用

页码：340 / 343

页数：4