摘要
目的：为简便、快速地测定大气中的二氧化硫.方法：建立以内含质量体积比为0.05%的乙二胺四乙酸二钠盐（EDTA）的2.2 mmol/L的Na2CO3和2.7 mmol/L的NaHCO3混合液为吸收液采集大气中SO2,滤膜过滤后以离子色谱法直接测定大气中SO2的新型方法.结果：吸收剂中SO2在0.1～80 μg/ml的浓度范围,峰面积与浓度之间呈良好的线性关系,相关系数为0.9991,检出限为0.12 μg/10 ml,其中SO2标准溶液浓度可用离子色谱法中的面积归一法确定.结论：方法快速、灵敏、准确、选择性高、对环境无二次污染,完全满足环境监测对大气中二氧化硫的测定.
Objective ：To overcome the shortcomings of complication, time - consuming, unstable coloration in detecting sulfur dioxide in air. Methods：We established a novel method to detect sulfur dioxide in air with ion chromatography. Results：The linear range was 0. 1～ 80 μg/ml with a detection limit of 0. 012μg/ml （ in the absorbent ） . The correlation coefficient was 0. 9991. Conclusion：The method is simple, efficient, accurate, and sensitive. In which nontoxic reagents are used. It is beneficial to environmental protection and could be accorded with the actual demands in environmental analysis.
出处
《中国卫生检验杂志》
CAS
2007年第8期1364-1365,共2页
Chinese Journal of Health Laboratory Technology
关键词
大气
二氧化硫
离子色谱法
Air
Sulfur dioxide
Ion chromatography
