Cadore S, dos Anjos A P, Baccan N
Universidade Estadual de Campinas, Instituto de Química, Campinas, SP, Brazil.
Analyst. 1998 Aug;123(8):1717-9. doi: 10.1039/a804177f.
The bismuth contents of various digested urine samples and prescription medicines were determined by atomic absorption spectrometry combined with hydride generation. The procedure followed was a standard addition method for urine and direct calibration for the prescription medicines. The detection limit of the method was determined to be 320 pg ml-1 Bi with an analytical frequency of 150 h-1. A relative standard deviation of 4.7% was found for Bi in urine at the level of 4.3 ng ml-1 Bi. Interference caused by NiII, CoII, CuII, AgI, SeIV, SbIII and HgII could be controlled with a masking solution of thiourea (0.2%)-KI (10%).
采用原子吸收光谱法结合氢化物发生法测定了各种消化尿样和处方药中的铋含量。采用的方法是尿样标准加入法和处方药直接校准法。该方法的检测限为320 pg ml-1铋，分析频率为150 h-1。在4.3 ng ml-1铋水平下，尿样中铋的相对标准偏差为4.7%。通过硫脲（0.2%）-碘化钾（10%）掩蔽溶液可控制镍（II）、钴（II）、铜（II）、银（I）、硒（IV）、锑（III）和汞（II）引起的干扰。
