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高效液相色谱法紫外检测器测定黄瓜及土壤中宁南霉素的消解与残留。

Dissipation and residue determination of ningnanmycin in cucumber and soil by high performance liquid chromatography with ultraviolet detector.

机构信息

School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, People's Republic of China.

出版信息

Bull Environ Contam Toxicol. 2013 Feb;90(2):256-9. doi: 10.1007/s00128-012-0927-x. Epub 2012 Dec 14.

Abstract

Ningnanmycin is a novel biochemical pesticide which was now used extensively in China. A fast and simple method using high-performance liquid chromatography with ultraviolet detection coupled with solid phase extraction was developed and validated for determination of ningnanmycin in cucumber and soil. The recoveries of ningnanmycin from the fortified cucumber and soil samples ranged from 80.7 % to 107.7 % with relative standard deviations less than 6.6 %. Limits of quantification of the method for both cucumber and soil were 0.02 mg kg(-1). The proposed method was successfully applied to determine the dissipation and residues of ningnanmycin in cucumber and soil under field conditions. Direct confirmation of the analytes in samples was realized by liquid chromatography-mass spectrometry.

摘要

宁南霉素是一种新型的生化农药,目前在中国广泛使用。建立了一种快速、简单的高效液相色谱-紫外检测法,并结合固相萃取法,用于测定黄瓜和土壤中的宁南霉素。宁南霉素在添加的黄瓜和土壤样品中的回收率为 80.7%至 107.7%,相对标准偏差小于 6.6%。该方法在黄瓜和土壤中的定量限均为 0.02 毫克/千克。该方法成功地应用于田间条件下测定黄瓜和土壤中宁南霉素的消解和残留。通过液相色谱-质谱联用直接确认了样品中的分析物。

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