关于水蛭药材砷元素超标原因的研究

Study on the reason of medicinal leech arsenic residues exceeded the standard

目的了解水蛭药材砷元素残留现状,探究砷元素在水蛭体内富集的影响因素。方法通过对3组土壤养殖和1组清水养殖水蛭进行为期60天的模拟养殖,每15天采样一次,烘干、粉碎加工后采用电感耦合等离子质谱(ICP-MS)技术对水蛭药材砷元素进行检测,并采用SPSS statistic 20软件对检测结果进行分析。结果水蛭药材砷元素含量超标现象普遍,威胁用药安全;各实验组别砷元素累积结果无明显差异,不同养殖方式水蛭药材的砷元素积累趋势大致相同。结论水蛭药材砷元素残留随着养殖时间的增加而富集,这可能与养殖过程中的进食行为有关,而水蛭药材砷元素的主要来源可能是日常投喂时的饲料污染;不同养殖环境下水蛭药材砷元素累积含量不同,以泥土为基质饲养水蛭可能会促进水蛭体内砷元素的代谢,更有利于提高水蛭药材的安全性。

Objective To understand the status of medicinal leeches residual elements As, explore factors As elements in the body leech enrichment. Methods Three groups of soil cultilation and a group of water breeding leeches for a period of 60 days of analog culture, sampled once elery 15 days, drying, crushing and processing by inductilely coupled plasma mass spectrometry （ ICP-MS） technology for medicinal leech As elements testing, and the use of SPSS statistic 20 software on the test results were analyzed. Results As medicinal leeches oler quantity, widespread drug safety threat; As the experimental groups showed no significant difference in the cumulatile elements, accumulated in different farming medicinal leeches As elements of roughly the same trend. Conclusions As medicinal leech farming increases the residual elements of time and enrichment, which may be the breeding process of eating behalior, and the main source of medicinal leeches As elements might be contamination of feed daily feeding time;different culture enlironment as medicinal leech different content elements accumulate in the soil matrix may promote metabolic feeding leech leech as elements help to improle the safety of medicinal leeches.