光谱水平电极撒样法同时测定化探样品中银、锡、钼、铋四元素的研究

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本文采用碘化钾+ 光谱基物+ 石墨粉为缓冲剂,以背景为内标,一次摄谱同时测定化探样品中的 Ag 、 Sn 、 Mo 、 Bi4 元素,绝对检出限(ug/g) 分别为0 .021 、0 .79 、0 .17 、0 .20 。测定范围(ug/g) : Ag 为0 .02 ~20 ; Sn 为0 .8 ~500 ; Mo 为0 .2 ~200 ; Bi 为0 .2 ~200 ,均能满足化探试样中微痕量元素测定的要求。本法在1 m 光栅摄谱仪上摄谱,具有广泛的适用性,并且简便、快速、灵敏度高,成本低。 In this paper, potassium iodide + spectrophotometer + graphite powder as buffer and background as internal standard were used to determine the contents of Ag, Sn, Mo and Bi4 in the geochemical exploration samples simultaneously. The absolute detection limits (ug / g) 0. 021, 0. 79, 0. 17, 0. 20. Measurement range (ug / g): Ag is zero. 02 ~ 20; Sn is zero. 8 ~ 500; Mo is 0. 2 ~ 200; Bi is 0. 2 ~ 200, can meet the requirements of the determination of trace elements in geochemical samples. This method of spectroscopy in a 1 m grating spectrograph has a wide range of applicability and is simple, fast, sensitive and low cost.
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