摘要
采用石墨炉原子吸收技术 ,研究了石墨杯、普通石墨管、热解石墨管中铂的原子化行为 ,灰化和原子化条件及仪器的操作条件等。考察了盐酸、硝酸、硫酸和十几种元素对铂测定的影响 ,建立了石墨炉原子吸收光谱测定铂的方法 ,综合应用光控升温和石墨管技术 ,提高了电热原子吸收测定铂的灵敏度。通过样品分析及回收率试验 ,验证了此分析方法具有较高的准确度和精密度 ,其分析结果的变异系数 <5 .0 % ,相对误差 <± 2 .0 % ,回收率为 97%～ 10 4%。
In order to determine the microanalysis of Pt in combustion improver by graphite furnace atomic absorption spectrophotometry(GFAAS) ,the atomizing behavior, ashing and atomizing conditions of Pt in graphite cup, ordinary graphite tube and pyrogenic graphite tube and instrument operation conditions etc were studied. The influences of HCl,HNO 3,H 2SO 4 and over ten elements upon the determination of Pt were observed,and the method of determination of Pt by GFAAS was established.By adopting optical temperature controller and graphite tube technology, the sensitivity of determination of Pt was heightened.the sample analysis and rate of recovery experimints showed that is analytical method has high accuracy and precision, the variation coefficient of analysis results is less than 5%;the ralative error is less than ±2.0%; and the rate of recovery is between 97% and 104%.
出处
《精细石油化工》
CAS
CSCD
北大核心
2002年第5期60-63,共4页
Speciality Petrochemicals
