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| 塞曼原子吸收光谱法测定固定污染源废气中的汞 |
| Determination of Mercury in Stationary Source Emission by Zeeman Atomic Absorption Technique |
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| DOI： |
| 中文关键词: 汞 原子吸收法 固定污染源 废气 |
| 英文关键词: Mercury Atomic absorption spectrometry Stationary source Waste gas |
| 基金项目:江苏省环保科研“江苏省钢铁行业汞排放水平及总量研究”基金资助项目 (2014022) |
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| 中文摘要: |
| 用PMS 30B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0.05 μg/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0.07 μg/m3～1 031 μg/m3。 |
| 英文摘要: |
| Mercury in stationary source emission was collected by PMS 30B sampler and determined by Zeeman 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% respectively. 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 determined by this method, and the RSD was 5.9% in 6 results. When the sampling volume was 20 L, the detection 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/m3～1 031 μg/m3 according to practical determination. |
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