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电感耦合等离子体质谱法测定大米中几种重金属元素含量 被引量:11

Determination of Several Heavy Metals Content in Rice by Inductively Coupled Plasma Mass Spectrometry
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摘要 [目的]快速准确测定大米中几种重金属元素含量,为大米中的重金属污染情况研究提供参考。[方法]采用微波消解法,应用电感耦合等离子体质谱(ICP-MS)技术同时测定了大米中Pb、As、Cd、Hg、Cr、Cu、Zn、Se 8种元素的含量,优化了测定条件。[结果]试验表明,该方法测定的大米中8种元素在线性范围内相关系数均大于0.999 6,检出限范围为0.18-20.00μg/kg;回收率为91.6%-106.0%,相对标准偏差为0.5%-9.7%。[结论]该方法具有简便、灵敏、准确的特点,适用于大米中Pb、As、Cd、Hg、Cr、Cu、Zn、Se含量的检测。 [Objective] The aim was to determine several heavy metals content in rice rapidly and accurately, to provide reference for research on heavy metal pollution in rice.[Method] The content of lead, arsenic, cadmium, mercury, chromium, copper, zinc and selenium in rice were determined by inductively coupled plasma mass spectrometry (ICP-MS) with microwave digestion.The conditions for the determination of 8 ele-ments were optimized.[Result] The results showed that the correlation coefficient of 8 elements in rice is greater than 0.999 6 in the linear range, the detection limit is 0.18 -20.00 μg/kg, the recovery rate is 91.6%-106.0%, the relative standard deviation is 0.5%-9.7%. [Conclusion] The method is simple, sensitive and accurate.It is suitable for the detection of the content of lead, arsenic, cadmium, mercury, chromium, copper, zinc and selenium in rice.
出处 《安徽农业科学》 CAS 2016年第33期83-85,115,共4页 Journal of Anhui Agricultural Sciences
关键词 大米 电感耦合等离子体质谱法 重金属 Rice Inductively coupled plasma mass spectrometry Heavy metal
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