微波消解石墨炉原子吸收法测定藕粉圆中铅镉

摘要

通过对盐城市5个区域总计8个品种22个藕粉圆样品中重金属铅镉的含量测定,探明这2种重金属元素在藕粉圆中的含量状况.采用微波消解法消化经粉碎混匀的藕粉圆样品,以石墨炉原子吸收法测定22个样品中的铅镉浓度.结果表明藕粉圆中铅的检出限为1.0μg/L,线性范围为2.0μg/L～30.0μg/L,样品的加标回收率为100.72％～103.66％;镉的检出限为0.08μg/L,线性范围为0.1μg/L～2.0μg/L,样品的加标回收率为98.25％～102.83％.%The content of Pb and Cd in 8 kinds of 22 lotus rhizome starch dumpling products collected in five areas of Yancheng was determined. After microwave digestion, the 22 crushed and well-mixed samples were analyzed by graphite furnace atomic absorption spectrophotometry. The detection limit of the method for Pb was 1.0μg/L, the linear range was 2.0μg/L-30.0μg/L, and the recoveries were 100.72％-103.66％. The detec-tion limit of the method for Cd was 0.08μg/L, the linear range was 0.1μg/L-2.0μg/L, and the recoveries were 98.25％-102.83％.