高效液相色谱法测定稻田中丙草胺残留 |
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引用本文: | 罗俊凯,黄雪,杨丽华,廖晔颉,龚道新. 高效液相色谱法测定稻田中丙草胺残留[J]. 环境监测管理与技术, 2014, 26(1): 32-34 |
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作者姓名: | 罗俊凯 黄雪 杨丽华 廖晔颉 龚道新 |
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作者单位: | 湖南农业大学资源环境学院;湖南农业大学资源环境学院;湖南农业大学资源环境学院;湖南农业大学资源环境学院;湖南农业大学资源环境学院 湖南农业大学农业环境保护研究所 |
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基金项目: | 基金项目:〖HTSS〗 农业部农药残留研究基金资助项目(2010H218);广西省南宁市专利新产品产业化重大科技专项基金资助项目(201106055D) |
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摘 要: | 用二氯甲烷提取稻田水和水稻植株样品中的丙草胺,稻田土壤样品用二氯甲烷-甲醇混合溶剂(体积比为9∶1)提取,再用高效液相色谱仪测定。方法在0.02 mg/L~2.00 mg/L的范围内线性良好,相关系数为0.9998;稻田水、土壤,水稻植株中丙草胺的检出限分别为0.001 mg/L、0.005 mg/kg、0.01 mg/kg;对稻田水、土壤和水稻植株分别做3个浓度水平的加标回收试验,重复5次,平均回收率在75.5%~84.7%之间,测定结果的相对标准偏差为2.0%~10.5%。
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关 键 词: | 丙草胺 高效液相色谱法 水质 土壤 水稻 |
Determination of Pretilachlor in Paddy Field by HPLC |
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Affiliation: | LUO Jun-kai, HUANG Xue, YANG Li-hua, LIAO Ye-jie ( 1. College of Resource and Environment, Hunan Agricultural University, Changsha, Hunan 410128, China ; 2. Institute ofAgricultural Environmental Protection ,Hunan Agricultural University, Changsha ,Hunan 410128, China) |
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Abstract: | Pretilachlor in paddy-field water and paddy rice samples were extracted with dichloromethane, while paddy-field soil samples were extracted with dichloromethane-methanol mixture(volume ratio is 9∶1 ).The extracts were subsequently determined by high performance liquid chromatography.The results showed that the linearity of pretilachlor was favorable in a range between 0.02 mg/L and 2.00 mg/L,the correlation coefficient was 0.999 8.The detection limits of pretilachlor in paddy-field water,paddy-field soil and paddy rice were 0.001 mg/L,0.005 mg/kg and 0.01 mg/kg,respectively.The spiked recovery test of three concentration levels were done in paddy-field water,paddy-field soil and paddy rice,and repeated five times.The average recovery rate ranged from 75.5% to 84.7%.The relative standard deviations were between 2.0% and 10.5%. |
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Keywords: | Pretilachlor High performance liquid chromatography Water quality Soils Paddy rice |
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