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本文用Nafion交换剂预富集-石墨炉原子吸收法测定药物中的铋。在pH 1.5的硝酸底液中,Bi~(3+)测定的线性范围为1～30 ng/ml,回收率在96～104％之间。在含Bi~(3+)为15 ng/ml的溶液中进行八次平行测定,相对标准偏差为1.5％,检出限为0.3 ng/ml。多种金属离子和有机物不干扰测定。
In this paper, Nafion exchanger preconcentration - Graphite Furnace Atomic Absorption Spectrometry Determination of bismuth in drugs. The linear range of Bi ~ (3+) was 1 ~ 30 ng / ml in the nitric acid solution at pH 1.5. The recoveries ranged from 96% to 104%. Eight parallel assays were performed in a solution containing Bi 3+ at 15 ng / ml with a relative standard deviation of 1.5% and a limit of detection of 0.3 ng / ml. A variety of metal ions and organic matter does not interfere with the determination.