用PMS 30 B型汞采样器采集固定污染源废气,再用塞曼原子吸收汞分析仪测定样品中的汞,高、低浓度汞标准样品测定结果均在标准范围内,相对误差分别为0和4.3%.汞吸收管对高、低浓度含汞废气的穿透效率表明,当废气汞质量浓度达到mg/m3级别时,穿透率仅为1.3%.用该方法测定稳定工况固定污染源废气中的汞,6次测定结果的RSD为5.9%,方法检出限为1.04 ng,当采样体积为20 L时,检出限为0.05μg/m3.实际监测表明,钢铁企业、燃煤电厂、垃圾焚烧厂废气中汞为0.07μg/m3~1031μg/m3.%Mercury in stationary source emission was collected by PMS 30 B sampler and determined by Zee-man atomic absorption mercury analyzer .The determination results of mercury standard samples with high and low concentrations were both within the scopes of the standard values , the relative error was 0 and 4.3%respec-tively.The penetration efficiency test on mercury absorption tube showed that when the mercury concentration reached mg/m3 level, the penetration rate was only 1.3%.Mercury in exhaust gas of stationary source was de-termined by this method, and the RSD was 5.9%in 6 results.When the sampling volume was 20 L, the detec-tion limit was about 0.05 μg/m3 .Mercury emission load from steel company ,coal-fired power plant and waste incineration plant ranged from 0.07 μg/m3 ~1031 μg/m3 according to practical determination .
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