扩散法测定环境空气中的二氧化硫

摘要

介绍了利用自制分子扩散式个体采样器，监测环境空气中的二氧化硫的方法，该方法改PRA光度法为离子色谱法，提高了方法的灵敏度。经实验室性能评价能够满足实验室测试的要求。并经有动力的溶液吸收管法现场对比测试，两种测试方法结果一致。%Measuring SO2 in ambient air by molecule diffusion sampler is introduced in this article. Iron chro-matographer instead of traditional PRA spectrophotometer analyzes the sample in the method, so the sensitivity is in-creased. Through experimental assessment,this method can reach the requirement of experimental measurement. In addi-tion ,compared with the positive method of absorb－tube in sites ,the results correlate well.