鸡血藤中6种重金属及有害元素测定及其安全性评价

Determination of 6 Hazard Elements in Spatholobi Caulis by ICP-MS and Its Limit Assessment

    摘要
  • 摘要: 目的 建立鸡血藤中铬、铜、砷、镉、汞、铅6种重金属的含量测定方法。方法 采用微波消解法前处理样品，ICP-MS同时测定鸡血藤中6种重金属的含量，并参照WHO标准对其最大理论限量进行评估。结果 6种待测元素在各自的线性范围内线性关系良好（r≥0.9998），方法检测限为0.0016~0.0227mg/L，平均回收率在70.05%~117.98%，RSD在1.30%~3.69%，样品中铬、铜、砷、镉、汞、铅6种元素的平均含量均小于其最大理论限量值（0.8000、140.0、0.8571、0.4000、0.2286、1.429mg/kg)。结论 方法简单、准确、灵敏度高，可为鸡血藤中重金属元素的测定和限量评估提供参考。

     

    Abstract: OBJECTIVE To develop a method for the determination of 6 hazard elements such as Cr， Cu， As， Cd， Hg and Pb in Spatholobi Caulis. METHODS After the microwave digestion and then 6 hazard elements were determined by ICP-MS at the same time. Based on this， the limit of Cr， Cu， As， Cd， Hg and Pb were assessed with WHO standards. RESULTS The determination results of 6 hazard elements all have a good linear relationship， r≥0.9998. The limit of detection was range from 0.0016~0.0227ng/mL， the average recovery was 70.05%~117.98%， and RSD were 1.30%~3.69%. Determination results of samples of 6 hazard elements less than the maximum limit value（0.8000， 140.0， 0.8571， 0.4000， 0.2286， 1.429mg/kg）. CONCLUSION The method is simple， accurate and high sensitive， can be used for the quality control and limit assessment of Spatholobi Caulis.

     

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