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控制试样法在冶金钢铁分析中的应用已有介绍,该法具有简便快速节约等优点,然而在地质样品分析中却很少应用。本文结合化探样品的特点,对该法在化探样品光谱分析中的应用做了尝试。由于控制试样法仅与所带的控制样品有关,而与谱板的乳剂性质无关。本法在应用于化探样品Ag、Li、Pb、Sn、Mo、B六种元素的光谱测定中取得了满意的结果。各元素的相对标准偏差为7—13％,精密度略优于三标准试样法。通过对地球化学标准样的分析,本法的测定结果与推荐值接近,△logC多数在±0.1以内。使用本法不要求比三标准试样法更高的工作条件,能节省标准试样和光谱干板,降低生产成本,提高工作效率。
The application of control sample method in the analysis of metallurgical steel has been introduced. The method has the advantages of simple and quick saving, but it is rarely used in the analysis of geological samples. Combined with the characteristics of geochemical exploration samples, this paper attempts to apply the method to the spectral analysis of geochemical exploration samples. Since the control sample method is only relevant to the control sample carried, it has nothing to do with the plate’s emulsion properties. Satisfactory results have been obtained in the spectrometric determination of six elements Ag, Li, Pb, Sn, Mo and B used in geochemical exploration samples. The relative standard deviation of each element is 7-13%, precision slightly better than the three standard sample method. Through the analysis of geochemical standards, the method of determination and recommended values ?? close, △ logC most within ± 0.1. The use of this method does not require more than three standard sample method of higher working conditions, can save the standard sample and spectral dry board, reduce production costs, improve work efficiency.