Security Analysis of Residual Deltamethrin in Tea Plantation

CENG Ming-sen; XIA Hui-long; WANG Qing-sen; WANG Wen-jian; CHEN Zhong-lin; WU Guang-yuan

doi:10.19303/j.issn.1008-0384.2013.05.018

Volume 28 Issue 5

May 2013

Turn off MathJax

Article Contents

Article Navigation > Fujian Journal of Agricultural Sciences > 2013 > 28(5): 494-498

CENG Ming-sen, XIA Hui-long, WANG Qing-sen, WANG Wen-jian, CHEN Zhong-lin, WU Guang-yuan. Security Analysis of Residual Deltamethrin in Tea Plantation[J]. Fujian Journal of Agricultural Sciences, 2013, 28(5): 494-498. doi: 10.19303/j.issn.1008-0384.2013.05.018

Citation:

CENG Ming-sen, XIA Hui-long, WANG Qing-sen, WANG Wen-jian, CHEN Zhong-lin, WU Guang-yuan. Security Analysis of Residual Deltamethrin in Tea Plantation[J]. Fujian Journal of Agricultural Sciences, 2013, 28(5): 494-498. doi: 10.19303/j.issn.1008-0384.2013.05.018

Citation:

PDF( 914 KB)

Security Analysis of Residual Deltamethrin in Tea Plantation

doi: 10.19303/j.issn.1008-0384.2013.05.018

1. Tea Research Institute,Fujian Academy of Agricultural Sciences,Fu′an,Fujian 355015,China;
2. College of Environmental Science and Engineering,Zhejiang Gongshang University,Hangzhou,Zhejiang 310035,China;
3. Anxi Tea Research Institute,Anxi,Fujian 362400,China;
4. Wuyi Sub-District Office of Wuyishan city,Wuyishan,Fujian 354300,China

Received Date: 2013-03-02
Publish Date: 2013-05-18

Abstract

Abstract

To investigate the final residues and dynamic degradation of deltamethrin sprayed on Fuyun 6,Jinguanyin,Tieguanyin and Shuixian(Camellia sinensis),a security analysis of residual deltamethrin in different tea plantation(Fu′an,Anxi and Wuyishan)was carried out after 500-3 000 times of 2.5% deltamethrin was air-dried or 1,3,5,7,10,15 days after spraying.The results showed that the reduce residues has a linear relation with diluted times of the pesticides.On the one hand,the residual amounts treated with the same concentrations were higher in spring tea than those of summer tea or autumn tea,and more residual contents would be found in green tea varieties(Fuyun 6) than those of oolong tea varieties(Jinguanyin).The half-life of the degradation was prolonged with the increased concentrations but with no significant differences.On the other hand,oolong teas had a long half-life of the degradation than those of green teas at the same concentrations,which respectively reached a significant level in spring.And there were significant difference of half-life among oolong tea varieties in every season sprayed with the same concentration of pesticides in each region.The usages of 500-3 000 times of 2.5% deltamethrin in the tea garden were relative safety concentrations.The status quo requirement of 5 days as the safety interval was appropriate according to the proposal of GB/T 8321.1-2000,Guideline for safety application of pesticides(Ⅰ),but 7days was recommended for non-polluted tea garden and export base to the European Union member countries.
- deltamethrin,
- tea,
- pesticide residues,
- dynamic degradation,
- tea varieties,
- tea producing areas,
- security

FullText(HTML)

References(12)

References

[1]	陈宗懋.无公害茶叶生产中拟除虫菊酯类农药的选择[J].中国茶叶,2002,(3):3-4.
[2]	陈宗懋,岳瑞芝.化学农药在茶叶中的残留降解规律及茶园用药安全性指标的设计[J].中国农业科学,1983,(1):62-70.
[3]	陈宗懋,韩华琼,岳瑞芝.溴氰菊酯(DECIS)在茶叶中的残留降解[J].昆虫学报,1983,26(2):146-153.
[4]	王运浩,万海滨,薛玉柱,等.拟除虫菊酯类农药对茶树害虫的生物活性与残留降解[J].昆虫学报,1991,34(1):20-25.
[5]	王运浩,万海滨,夏会龙.拟除虫菊酯农药在茶叶中应用的安全性评价[J].中国环境科学,1997,17(2):176-179.
[6]	刘光明,黄雅俊,陈宗懋.茶叶中溴氟菊酯残留降解动态的研究[J].中国茶叶,1999,(3):18-19.
[7]	陈宗懋.茶叶中农药残留量的形成、消解与控制[J].中国茶叶,1979,(2):16-20.
[8]	陈宗懋,岳瑞芝.化学农药在茶叶中的残留降解规律及茶园用药安全性指标的设计[J].中国农业科学,1983,(1):62-70.
[9]	夏会龙,王运浩,万海滨,等.茶树生长稀释在农药降解中的定量[J].茶叶科学,1992,12(1):1-6.
[10]	江昌俊,李卓民,徐玲,等.茶树品种与水溶性农药残留量关系初探[J].安徽农业科学,1999,27(1):78-79.
[11]	陈宗懋.乌龙茶和花茶中的农药残留问题[J].福建茶叶,2000,(4):2-4.
[12]	WAN H,XIA H,CHEN Z.Extraction of pesticide residuesin tea by water during the infusion process[J].Food Additives and Contaminants,1991,8(4):497-500.