| 吡虫啉和百菌清在设施内外葫芦和黄瓜中的残留特性比较 |
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| 引用本文： | 赵颖,沈坚,秦丽,尚子帅,吴慧明,朱国念.吡虫啉和百菌清在设施内外葫芦和黄瓜中的残留特性比较[J].农药学学报,2012,14(6):647-653. |
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| 作者姓名： | 赵颖 沈坚 秦丽 尚子帅 吴慧明 朱国念 |
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| 作者单位： | 1.浙江大学 农药与环境毒理研究所,杭州 310029 |
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| 摘 要： | 采用高效液相色谱和气相色谱法,分别研究了吡虫啉和百菌清在薄膜大棚设施内外葫芦叶和黄瓜中消解动态及其在葫芦和黄瓜中的残留量,并结合气象因子对产生残留差异的原因进行了分析。样品中的吡虫啉经乙腈和盐酸溶液提取,中性氧化铝和弗罗里硅土层析柱净化后,用高效液相色谱检测;百菌清经乙腈提取,中性氧化铝层析柱净化后,用气相色谱检测。结果表明:吡虫啉在设施内外葫芦叶和黄瓜中均消解迅速,施药7 d后,其在设施内外葫芦叶上的消解率分别为90.4%和98.7%,在黄瓜中的消解率分别为67.8%和85.9%;而百菌清在葫芦叶上的消解速率均比在黄瓜中的稍慢,施药7 d后其在设施内外葫芦叶上的消解率分别为15.4%和38.1%,在黄瓜中的消解率分别为87.8%和91.5%。表明2种农药在设施外2种蔬菜上的消解速率均快于设施内的。两种农药均是在设施外葫芦及黄瓜中的残留量低于设施内的,而降雨和光照强度可能是引起农药在设施内外蔬菜上残留差异的主要因子。
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| 关 键 词： | 吡虫啉 百菌清 设施蔬菜 葫芦 黄瓜 残留 |
| 收稿时间： | 2012/8/27 0:00:00 |
| 修稿时间： | 2012/10/17 0:00:00 |
Residual characteristic analysis of imidacloprid and chlorothalonil in calabash and cucumber in field and greenhouse |
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| ZHAO Ying,SHEN Jian,QIN Li,SHANG Zishuai,WU Huiming and ZHU Guonian.Residual characteristic analysis of imidacloprid and chlorothalonil in calabash and cucumber in field and greenhouse[J].Chinese Journal of Pesticide Science,2012,14(6):647-653. |
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| Authors: | ZHAO Ying SHEN Jian QIN Li SHANG Zishuai WU Huiming and ZHU Guonian |
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| Institution: | 1.Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou 310029, China2.Station for Agricultural Quality and Safety Inspection of Hangzhou City Yuhang District, Hangzhou 311100, China3.College of Agriculture and Food Science, Zhejiang Agriculture and Forest University, Hangzhou 311300, China |
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| Abstract: | The decline of imidacloprid and chlorothalonil in calabash leaf and cucumber and residue in calabash and cucumber in field and greenhouse were studied by high performance liquid chromatography(HPLC) and gas chromatography(GC) respectively.The reason of residual diversity was analyzed considering meteorological factors.Imidacloprid was extracted with acetonitrile and hydrochloric acid,cleaned up with neutral alumina and florisil,and detected by HPLC-UV.Chlorothalonil was extracted with acetonitrile,cleaned up with neutral alumina,and detected by GC-ECD.The results showed that imidacloprid decline rapidly in both calabash leaf and cucumber.At 7 days after application,the decline rate of imidacloprid in calabash leaf in greenhouse and field were 90.4% and 98.7%,and that in cucumber were 67.8% and 85.9%.However the decline of chlorothalonil in calabash leaf was lower than cucumber.At 7 days after application,its residue on the calabash leaf were 38.1% and 15.4%,while with 87.8% and 91.5% decline rate in greenhouse and in field on cucumbers.It turned out that the decline of two pesticides in these two vegetable in field were both faster than that in greenhouse and the zero residues from the crops in field were lower than that of in greenhouse.It's proposed that the rainfall may be the main factor which caused the diversity of residual decline rate of two kinds of pesticide in field and greenhouse. |
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| Keywords: | imidacloprid chlorothalonil greenhouse vegetable calabash cucumber residue |
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