Residues of lambda-cyhalothrin in tea

被引：47

作者：

Seenivasan, Subbiah ^{[1
]}

Muraleedharan, Narayanan Nair ^{[1
]}

机构：

[1] Tea Res Inst, UPASI Tea Res Fdn, Valparai 642127, India

来源：

FOOD AND CHEMICAL TOXICOLOGY | 2009年 / 47卷 / 02期

关键词：

Lambda-cyhalothrin; Residues; Tea; Persistence; Dissipation; MRL; PESTICIDES; DISSIPATION; PERSISTENCE; SOILS; BREW;

D O I：

10.1016/j.fct.2008.12.010

中图分类号：

TS2 [食品工业];

学科分类号：

0832 ;

摘要：

Field experiments were conducted at two places in Tamil Nadu (India) during dry season of 2006 to determine the residues of lambda-cyhalothrin in fresh green tea leaves and black tea. Residues were quantified at different harvest intervals of '0' (3 h), 1st, 3rd, 5th, 7th, 10th and 14th day after insecticide application. Persistence, dissipation pattern, half-life value and safe harvest interval of the insecticide in tea were calculated. Residues of lambda-cyhalothrin dissipated exponentially after application at both the locations and reached below the European Union maximum residue limit (MRL) of 1 mg/kg on the 5th day. Lambda-cyhalothrin showed that like other insecticides it followed the first order dissipation kinetics. Half-life values varied from 2.8 to 3.5 days for lambda-cyhalothrin and a safety harvest interval of 5 days is suggested for tea at the recommended dosage. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：502 / 505

页数：4

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