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建立空气细颗粒物PM 2.5中主要金属元素含量的测定方法。滤膜样品经微波消解处理后,采用电感耦合等离子体质谱(ICP-MS)法测定锑、铝、砷、铍、镉、铬、汞、铅、锰、镍、硒、铊等12金属元素的含量。12种金属元素的相关系数都在0.99以上,检测限在0.08~2μg/L,精密度RSD在1.3%~2.2%,12种元素高、中、低3种浓度的加标回收率在89.5%~108.0%。ICPM S法操作简单、检出限低、准确性好,可为空气中金属元素的限量检测提供参考。
The establishment of air fine particulate matter PM 2.5 Determination of the main metal elements. After microwave digestion, the ICP-MS method was used to determine the content of antimony, aluminum, arsenic, beryllium, cadmium, chromium, mercury, lead, manganese, nickel, selenium, content. The correlation coefficients of 12 kinds of metal elements were above 0.99, the detection limits were 0.08 ~ 2μg / L, the RSD of precision was 1.3% ~ 2.2%, the spiked recoveries of 12 kinds of elements were 89.5% ~ 108.0%. ICPM S method is simple, low detection limit, good accuracy, which can provide reference for the limited detection of metal elements in the air.