【摘要】 采用微波消解技术作为测定城市路面径流雨水中铅的预处理方法,研究了碘化钾甲基异丁基甲酮(KI-MIBK)萃取火焰原子吸收分光光度法(AAS)测定城市路面径流雨水中的微量铅。这种消解方法只需12 min就可达到对含铅水样完全消解的目的,该方法无论从时间上还是从能耗上明显优于样品的传统电热板加热消解法。测定结果表明,这种方法的精密度和准确度均取得了满意的效果,变异系数为1.93%~3.82%,加标回收率为95%~105%。更多还原

【Abstract】 Using the technology of microwave digestion as the pre-treatment method of water with lead,the extraction of lead from the water of urban road surface runoff was studied by the use of KI-MIBK flame atomic absorption spectrum(AAS).It takes only 12 minutes to attain the goal of complete digestion,and the method has priority over traditional digestion method in both time and consumption of energy.The results show that the method has yield satisfying effect in precision and accuracy,the variable coefficient is 1.93%～3.82%,and the recycling percentage of additional standard is 95%~105%.3 tabs,1 fig,6 refs.更多还原