氢化物发生-原子荧光光谱法测定铅的最佳酸度条件选择  

Choice of optimal acidity condition on determination of lead by hydride generation atomic fluorescence spectrometry

作　　者：麦洁梅[1] 成晓玲[2] 张琪[1] 

机构地区：[1]广州市番禺区疾病预防控制中心,广州511400 [2]广东工业大学轻工化工学院,广州510006

出　　处：《中国卫生检验杂志》2007年第7期1225-1226,共2页Chinese Journal of Health Laboratory Technology

基　　金：广州市番禺区科技计划资助项目(2005-Z17-1)

摘　　要：目的:对氢化物发生-原子荧光光谱法测定铅的酸度介质条件进行分析和研究,选择出最适宜的盐酸介质条件。方法:通过在不同的盐酸介质条件下对铅的标样进行测定。结果:酸度对铅测定的荧光强度有非常大的影响,在合适的酸度范围下进行铅的测定,能获得较高的灵敏度和精密度。结论:以2.0%盐酸作载流,在1.6%～2.5%的较宽的盐酸浓度范围内,测定铅能提高荧光强度,且获得5%以内的相对标准偏差。Objective：The optimal acidity condition on determination of lead by hydride generation atomic fluorescence spectrometry was given by studying the different acidity condition of hydrochloric acid. Methods：Test sample of lead in different acidity condition of hydrochloric acid. Results： It was found that the acidity has great impact to the fluorescence intensity on determina- tion of lead. Within the appropriate acidity scope it comes with a higher accuracy and sensitivity result. Conclusion：Within the wider hydrochloric acid concentration scope of 1. 6% to 2. 5% , the fluorescence intensity on determination of lead by hydride generation atomic fluorescence spectrometry can be raised and acquire 5% of opposite and standard deviation with carrier of 2. 0% hydrochloric acid.

关 键 词：原子荧光 铅 酸度条件 

分 类 号：O657.31[理学—分析化学]