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本文提出一种同时分析大气飘尘中30种痕量元素的定量方法。用薄膜滤纸抽滤3.6～13.5m~3的空气。滤纸在自制的低温氧等离子体灰化装置中灰化30～60分钟,得到低于10mg的灰分。以T型铝电极作为样品电极用火花源质谱法分析,灵敏度为10～10~(-4)μg/m~3。
This paper presents a quantitative method for the simultaneous analysis of 30 trace elements in atmospheric fly ash. Filtered with a membrane filter 3.6 ~ 13.5m ~ 3 air. The filter paper is ashed in a home-made cryogenic oxygen plasma ashing apparatus for 30 to 60 minutes, yielding less than 10 mg of ash. The T-type aluminum electrode as the sample electrode was analyzed by spark source mass spectrometry with a sensitivity of 10 ~ 10 ~ (-4) μg / m ~ 3.