摘要
提出了试样经微波消解后用电感耦合等离子体原子发射光谱法(ICP-AES)测定铂铑系列合金中铑的分析方法。对试样的微波消解条件、基体和谱线干扰等进行研究。结果表明,在230℃温度下,以盐酸和少许过氧化氢、硝酸和氢氟酸为消解试剂,试样在密闭容器中分两次进行消解60min可以完全溶解。消解液用ICP-AES测定时,通过选择合适的分析谱线可避免基体和光谱干扰。用本方法测定了系列铂铑合金的模拟试样,测定结果与行业标准方法的分析结果相一致,相对误差在0.10%～0.30%之间,相对标准偏差小于0.66%(n=6)。该法可以用于铂铑系列合金中铑含量的测定。
An analysis method for the determination of rhodium in platinum-rhodium series alloy by inductively coupled plasma atomic emission spectrometry （ICP-AES） after microwave digestion was pro- posed. The microwave digestion conditions of sample, interference of matrix and spectral line were investigated. The results showed that the sample could be fully dissolved in a mixed acid of hydrochloric acid, hydrogen peroxide, nitric acid and hydrofluoric acid by microwave digestion twice for 60 min in closed container at 230℃. During determination of the digestion solution by ICP-AES, the interference of matrix and spectrum could be avoided by selecting proper analytical lines. The proposed method was applied to the determination of platinum-rhodium alloy simulation sample with relative error in the range of 0.10 %-0.30 % and relative standard deviation below 0.66 % （n=6）,in addition the determination results were consistent with those obtained by industrial standard method. This method was applicable for the determination of rhodium in platinum-rhodium series alloy.
出处
《冶金分析》
CAS
CSCD
北大核心
2012年第2期59-62,共4页
Metallurgical Analysis
