微波消解-火焰原子吸收光谱法测定污泥中铅
FAAS DETERMINATION OF LEAD IN SLUDGE——DIGESTION OF SAMPLE BY MICROWAVE-HEATING
摘 要
研究了微波消解-火焰原子吸收光谱法测定污泥中铅.应用正交试验设计法确定了微波消解试样的最佳条件.该法与传统敞口消解法测定结果吻合.样品测定结果的相对标准偏差(n=6)为1.5%-4.7%,加标回收率为93.0%-106.2%.该方法省时省酸,减少环境污染,改善了工作环境.
微波消解
污泥
铅
正交试验
FAAS
Microwave-heating
Sludge
Lead
Orthogonal experimental design
Abstract
The conditions of digestion of sludge sample (i.e.requiring less time and chemicals,decreasing environmental pollution and etc.) were remarkably improved by using microwave heating of the sample with acids in a tightly closed vessel.Parameters of microwave-heating were optimized by the orthogonal experimental design.Lead content in the sample solution was then determined by FAAS using standard calibration curve method.Working conditions of the instrument was also given.RSD′s (n=6) obtained were in the range of 1.5% to 4.7%.Recoveries found were in the range from 93.0% to 106.2%.
中图分类号 O657.31
所属栏目 工作简报
基金项目
收稿日期 2005/2/11
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备注陈雨艳(1979-),女,吉林省公主岭市人,硕士研究生,研究方向为微波技术在化学中的应用.
引用该论文: CHEN Yu-yan,ZHANG Jin-sheng,LI Li-hua. FAAS DETERMINATION OF LEAD IN SLUDGE——DIGESTION OF SAMPLE BY MICROWAVE-HEATING[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2006, 42(10): 839～840
陈雨艳,张金生,李丽华. 微波消解-火焰原子吸收光谱法测定污泥中铅[J]. 理化检验－化学分册, 2006, 42(10): 839～840
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参考文献
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