| 阿特拉津和乙草胺在玉米和土壤中残留动态研究 |
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| 引用本文： | 王姗姗,王颜红,王万红,谢娟,王世成. 阿特拉津和乙草胺在玉米和土壤中残留动态研究[J]. 土壤通报, 2011, 0(5) |
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| 作者姓名： | 王姗姗 王颜红 王万红 谢娟 王世成 |
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| 作者单位： | 中国科学院沈阳应用生态研究所污染生态与环境工程重点实验室;中国科学院研究生院; |
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| 基金项目： | 农业部国家公益性行业科研专项计划项目“绿色农业科学研究与示范”(2007-10)资助 |
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| 摘 要： | 采用田间试验和气相色谱-质谱(GC-MS)联用的检测方法研究了阿特拉津和乙草胺在玉米和土壤中的消解动态及最终残留规律。结果表明,该方法阿特拉津最低检出浓度为0.08 ng g-1,添加浓度在10~250 ng g-1范围内,回收率在85%~97%之间,相对标准偏差(RSD)在10.0%~14.4%之间;乙草胺最低检出浓度为0.40 ng g-1,添加浓度在10~250 ng g-1范围内,回收率在102%~109%之间,相对标准偏差(RSD)在9.7%~14.0%之间。阿特拉津和乙草胺在土壤中的消解动态方程分别为C=1942.7e-0.0492T和C=916.53e-0.0343T,降解半衰期分别为14.1 d和20.2 d。38%阿特拉津水悬浮液、900 g L-1乙草胺乳油剂用于玉米田除草,施药剂量分别为5.25~10.50 g hm-2、2.25~4.50 g hm-2,在玉米播种后出苗前施药,施药1次,收获期玉米籽粒中阿特拉津残留量低于0.08 ng g-1、乙草胺残留量低于0.40 ng g-1,土壤中阿特拉津残留量低于3.3 ng g-1、乙草胺残留量低于12.4 ng g-1,均满足相应的限量标准。
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| 关 键 词： | 阿特拉津 乙草胺 消解 残留 玉米 土壤 |
Study on the Residue Dynamics of Atrazine and Acetochlor in Maize and Soil |
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| WANG Shan-shan ,,WANG Yan-hong ,WANG Wan-hong ,XIE Juan ,WANG Shi-cheng. Study on the Residue Dynamics of Atrazine and Acetochlor in Maize and Soil[J]. Chinese Journal of Soil Science, 2011, 0(5) |
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| Authors: | WANG Shan-shan WANG Yan-hong WANG Wan-hong XIE Juan WANG Shi-cheng |
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| Affiliation: | WANG Shan-shan 1,2,WANG Yan-hong 1,WANG Wan-hong 1,XIE Juan 1,WANG Shi-cheng 1(1.Key Laboratory of Pollution Ecology and Environmental Engineering,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Field trials and Gas Chromatography-Mass Spectrum(GC-MS) were conducted to study the residual dynamics and final residues of atrazine and acetochlor which were widely used as herbicides in maize and soil.The results showed that,the limits of determination for the atrazine and acetochlor were 0.08 ng g-1 and 0.40 ng g-1,respectively.When the added concentration of atrazine and acetochlor ranged from 10 ng g-1 to 250 ng g-1,the recoveries changed individually from 85% to 97% and from 102% to 109%,and their re... |
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| Keywords: | Atrazine Acetochlor Degradation Residues Maize Soil |
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