文献类型：期刊文献

英文题名：Influence of different formulations on chlorpyrifos behavior and risk assessment in bamboo forest of China

作者：Liu, Yihua[1,2] Mo, Runhong[1] Tang, Fubin[1] Fu, Yan[2] Guo, Yirong[2]

第一作者：Liu, Yihua;刘毅华

通信作者：Guo, YR[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Peoples R China;[2]Zhejiang Univ, Inst Pesticide & Environm Toxicol, Hangzhou 310029, Zhejiang, Peoples R China

年份：2015

卷号：22

期号：24

起止页码：20245-20254

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;Scopus(收录号：2-s2.0-84951567947);WOS:【SCI-EXPANDED(收录号:WOS:000366637300090)】；

基金：We gratefully acknowledge financial support from the Applied Research Project in the Public Interest of Zhejiang Province (2015C32071) and the Special Fund for Forestry Scientific Research in the Public Interest (201304705).

语种：英文

外文关键词：Chlorpyrifos; 3,5,6-trichloro-2-pyridinol; Formulation; Degradation; Residue risk; Bamboo shoot

摘要：The effects of two formulations (emulsifiable concentrate (EC) and granule (G)) on the distribution, degradation, sorption, and residue risk of chlorpyrifos (CHP) were investigated in two producing areas of bamboo shoot. The results showed that CHP was mainly distributed in the topsoil (0-5 cm, P < 0.05), with the proportion of CHP in the total quantity ranging from 76.0 to 100.0 % (G) and 12.0 to 98.1 % (EC), respectively. The degradation of CHP-EC in soils (half-life 27.7-36.4 days) was faster than that of CHP-G in soils (half life above 120-150 days). The main metabolite of CHP, 3,5,6-trichloro-2-pyridinol (TCP), was found in soil samples. CHP showed good sorption ability in the two tested soils, with the sorption coefficient (K-F) of 43.76 and 94.43 mg/kg. The terminal residues of CHP in bamboo shoots were in the range of 15.2-75.6 (G) and 10.4-35.7 mu g/kg (EC), respectively. The soil type had a notable effect on the CHP behaviors in soil (P < 0.05, especially for CHP-G), but it did not affect the metabolite of CHP. Although some positive bamboo shoot samples (CHP residue exceeding maximum residue limits) were found, the hazard quotients did not exceed 7 %, which meant there was a negligible risk associated with the exposure to CHP via the consumption of bamboo shoots.