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作 者:李毅 LI Yi(Dalian Huajian Testing Co.,Ltd.,Dalian 116620,China)
出 处:《中国资源综合利用》2024年第11期6-8,共3页China Resources Comprehensive Utilization
摘 要:固定污染源是大气的重要污染源,重金属主要以颗粒物形式存在于固定污染源废气中。固定污染源废气监测通常使用玻璃纤维滤筒采集颗粒物样品,进而测定重金属含量。为降低玻璃纤维滤筒的重金属含量本底值,试验采用向硝酸中加入乙二胺四乙酸二钠(EDTA-Na_(2))的方法对滤筒进行纯化。结果表明,该方法纯化滤筒的精密度较好,可有效降低滤筒中铅、镍、铜、锰、锡、铍、汞、砷和锑的含量,提高玻璃纤维滤筒的应用价值。Fixed pollution sources are important sources of atmospheric pollution,and heavy metals mainly exist in the form of particulate matter in the exhaust gas of fixed pollution sources.Fixed pollution source exhaust gas monitoring usually uses glass fiber filter cartridges to collect particulate matter samples and determine heavy metal content.In order to reduce the background value of heavy metal content in glass fiber filter cartridges,the experiment uses the method of adding disodium ethylenediaminetetraacetic acid(EDTA-Na_(2))to nitric acid to purify the filter cartridges.The results show that the method has good precision in purifying the filter cartridge,effectively reducing the content of lead,nickel,copper,manganese,tin,beryllium,mercury,arsenic,and antimony in the filter cartridge,and improving the application value of the glass fiber filter cartridge.
分 类 号:X831[环境科学与工程—环境工程]
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