微波消解-ICP-MS测定酸角浸膏中的铅、砷、镉、铬

Determination of lead, arsenic, cadmium and chromium in tamarindus concrete by microwave digestion system and inductively coupled plasma-mass spectrometry

中文关键词:  酸角浸膏  铅、砷、镉、铬  微波消解  ICP-MS

英文关键词:tamarindus concrete  Pb, As, Cd, Cr  microwave digestion system  inductively coupled plasma-mass spectrometry

中文摘要:

      目的 采用电感耦合等离子体发射光谱-质谱仪(ICP-MS)测定酸角浸膏中铅、砷、镉、铬的含量。方法 使用微波消解仪消解酸角浸膏试样, 外标法定量。结果 铅、砷、镉、铬在0~50.00 μg /L的浓度范围内线性关系良好, 相关系数为≥0.9995, 方法检出限为: 铅2.0 μg /kg、砷19.0 μg /kg、镉1.0 μg /kg、铬9.0 μ g /kg, 加标回收率的范围为81.5%~119.1%。结论 该方法试样处理简便, 测定速度快, 结果准确, 适用于酸角浸膏的检测。

英文摘要:

      Objective To establish a method for the determination of lead, arsenic, cadmium and chromium by inductively coupled plasma-mass spectrometry. Methods The tamarindus concrete was digested in a microwave digestion system, and determined by external standard method. Results The method showed a good li-nearity over the range of 0~50.00 μg/L for Pb, As, Cd, and Cr with r ≥0.9995, and the detection limits were Pb 2.0 μg/kg, As 19.0 μg/kg, Cd 1.0 μg/kg, and Cr 9.0 μg/kg, respectively. The mean recoveries ranged from 81.5%~119.1%. Conclusion This method is simple, rapid, and accurate, and it is suitable for the detection of tamarindus concrete.