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| 高效液相色谱法测定稻田中丙草胺残留 |
| Determination of Pretilachlor in Paddy Field by HPLC |
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| DOI： |
| 中文关键词: 丙草胺 高效液相色谱法 水质 土壤 水稻 |
| 英文关键词: Pretilachlor High performance liquid chromatography Water quality Soils Paddy rice |
| 基金项目: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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| 中文摘要: |
| 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〖JP20〗∶〖JP〗1）提取，再用高效液相色谱仪测定。方法在0.02mg/L～2.00mg/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%。 |
| 英文摘要: |
| 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〖JP20〗∶〖JP〗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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