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采用固体缓冲剂(焦硫酸钾、氟化钠、三氧化二铝、碳粉),对改造后的CCD-1平面光栅交流电弧直读发射光谱仪进行单次摄谱,内标法同时测定地球化学样品中的银、硼、锡元素,方法的检出限分别为0.015μg/g、0.73μg/g和0.27μg/g。通过对6个国家标准物质(水系、岩石、土壤)12次平行测定,其精密度RSD%为4.61%~8.23%,准确度|△lg C|为0.000~0.061,此法简便、快速、易掌握,完全满足多目标地球化学调查规范对银、硼、锡元素的分析要求。
The solid-phase buffer (potassium pyrophosphate, sodium fluoride, aluminum oxide, and carbon powder) was used to conduct a single spectrum of the modified CCD-1 plane grating AC arc direct reading emission spectrometer. The internal standard method was used for the simultaneous determination of geochemistry The detection limits of silver, boron and tin in the sample were 0.015μg / g, 0.73μg / g and 0.27μg / g, respectively. The accuracy of RSD% was 4.61% ~ 8.23% and the accuracy | △ lg C | was 0.000 ~ 0.061. The method was simple, rapid and easy to determine by measuring 12 parallel samples of 6 national standards (water system, rock and soil) Grasp and fully meet the requirements of the analysis of elements of silver, boron and tin in the multi-objective geochemical survey specification.