不同种植方式下土壤和蔬菜中氨基甲酸酯类农药残留状况研究
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* 江苏省环保科技项目(2004020、2002012)资助研究内容


RESIDUES OF CARBAMATE PESTICIDES IN SOILS AND VEGETABLES UNDER DIFFERENT VEGETATION SYSTEMS
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    摘要:

    氨基甲酸酯类农药的蔬菜残留问题随着其广泛使用受到公众的极大关注。本研究采用高效液相色谱-柱后衍生-荧光检测法分析了苏南某市4种不同种植方式下(传统菜地、露天蔬菜基地、大棚蔬菜基地和水稻田)68个蔬菜样品和32个土壤样品中10种N-甲基氨基甲酸酯类农药(涕灭威、涕灭威砜、涕灭威亚砜、杀线威、灭多威、残杀威、克百威、3-羟基克百威、甲萘威和灭虫威)的残留量,结果表明在蔬菜中检出的氨基甲酸酯农药残留水平多处于0.2~23μgkg-1,土壤中为0.1~10μgkg-1;土壤中3-羟基克百威和灭虫威全部检出,其最高检测浓度分别为10μgkg-1和1.64μgkg-1,其他农药仅有少数检出。尤其,克百威的代谢物3-羟基克百威在土壤和蔬菜样品中均全部检出,且部分蔬菜,如空心菜、茄子和芹菜中3-羟基克百威的浓度高达0.4~4.8mgkg-1。这可能是由蔬菜对其生物利用的有效性不同造成的。此外,不同种植方式下土壤与某些蔬菜中(西红柿、辣椒和上海青)3-羟基克百威的含量间存在一定的相关性,但统计结果表明相互间的差异并不显著。

    Abstract:

    A great deal of concern has been aroused among the scientific community about the extensive use of carbamate pesticides and their residues in vegetables.A method combining HPLC,a post-column derivation device and a fluorescent detector was used to determine residues of ten carbamate pesticides (aldicarb sulfoxide,aldicarb sulfone,oxamyl,methomyl,3-hydroxy carbofuran,aldicarb,propoxur,carbofuran,carbaryl and methiocarb) in 68 vegetable and 32 soil samples under four different cultivation systems (traditional kailyard,open field vegetable base,green house and paddy) were collected from a certain city in South Jiangsu.in March 2003 and July 2003.The results reveal that residues of carbamate pesticides were mostly found to be in the acceptable range from 0.1 μ g kg-1 to 10 μ g kg-1 in the soil samples and from 0.2 μ g kg-1 to 23 μ g kg-1 in the veg 2 etable samples.Residues of 3-hydroxy carbofuran and methiocarb were detected in all the soil samples with the highest value reaching 10 μ g kg-1 and 1.64 μ g kg-1,respectively,and residues of the rest were only in a few samples.What is even more noteworthy is that residue of 3-hydroxy carbofuran,a degradation product of carbofuran,was detected in all the soil and vegetable samples.And its concentration in water spinach,eggplant and celery ranged from 0.4 mg kg-1 to 4.8 mg kg-1,which may result from differences between vegetables in efficiency in bio-utilization of 3-hydroxy carbofuran.Meanwhile,under different cultivation systems residue of 3-hydroxy carbofuran in soils was related to that in some vegetables,like tomato,pepper and shang-haiqing,but not statistically significant.

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张劲强,董元华,安琼,刘新程.不同种植方式下土壤和蔬菜中氨基甲酸酯类农药残留状况研究[J].土壤学报,2006,43(5):772-779. DOI:10.11766/trxb200505160510 Zhang Jinqiang, Dong Yuanhua, An Qiong, Liu Xincheng. RESIDUES OF CARBAMATE PESTICIDES IN SOILS AND VEGETABLES UNDER DIFFERENT VEGETATION SYSTEMS[J]. Acta Pedologica Sinica,2006,43(5):772-779.

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  • 收稿日期:2005-05-16
  • 最后修改日期:2005-09-27
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  • 在线发布日期: 2013-02-25
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