摘要
环境水中农药残留量极低,远低于仪器的检出限而无法直接检测,其瓶颈在于如何富集水中的目标物。本文综述了近年来环境水中农药残留检测预处理富集与净化技术的研究进展;重点讨论了液-液萃取法中萃取溶剂的选择、振荡方式、浓缩方式、乳化与盐析现象、pH值、提取液的净化等影响因素;固相萃取法中吸附材料的选择及活化过程、穿透体积、过水流量、水分的去除、固相萃取柱的淋洗、目标化合物的洗脱、pH与NaCl改进剂、洗脱液的净化等影响因素;简要介绍新型富集方法并探讨了其中存在的不足;展望了环境水中农药残留富集净化技术的发展方向。
The pesticide residues in environment water could not be detected directly, because the content was much lower than the limit of detection （ LOD） of analysis instrument. The difficulty was how to concen-trate the targets. In this paper, it was reviewed that the research progress of enrichment and purify technology of the pesticide residues in environment water in recent years. It was focused on the discussion of influence factors of liquid - liquid extraction （ LLE） , such as：the selection of extraction solvent, mode of vibration,mode of condense, phenomenon of emulsification and salt out, pH, purification of extractions, and of solid phase extraction （ SPE） , such as： the selection and activation of absorbent material, breakthrough volume, sample flow rate, moisture removal, leaching of the SPE cartridge, elution of the targets, pH and NaCl, purification of the elution solvent. Some new type enrichment methods were briefly introduced, and their dis-advantages were discussed. The directions for future research were forecasted on the enrichment and purified technologies of pesticide residues in environment water.
出处
《福建水产》
2014年第2期159-166,共8页
Journal of Fujian Fisheries
基金
厦门市科技计划创新项目(3502Z20103045)
