电热石墨消解火焰原子吸收光谱法测定废气中铜镍铬铅
Analytical Instrumentation(2013)
Abstract
采用电热石墨消解仪消解滤筒采集的废气样品,以火焰原子吸收光谱法(FAAS)测定样品中铜、镍、铬、铅。对消解液的种类进行选择优化,使滤筒消解得更完全,且避免了前处理过程的吸附损失。铜、镍、铬的检出限均为0.006mg/m3,铅的检出限为0.025mg/m3,回收率为98.4~100%,精密度为1.7~3.4%(n=6)。该方法准确度高,快速高效,劳动强度低,适用于废气中重金属的测定。
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Key words
waste gas,flame atomic absorption spectrometry(FAAS),electric heating-graphite digestion
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