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样品经盐酸和硝酸溶解,采用30%的酸度,用电感耦合等离子体发射光谱法直接测定多金属矿石中银、铜、铅、锌,方法检出险:银1.45 ug/g、铜0.0002%、铅0.001%、锌0.0008%,精密度(RSD,12)在0.51—5.02%。方法经国家一级标准物质(GBW07162、GBW07163、GBW07165、GBW07255、GBW07256和GBW07257)验证测定值与标准值相符,实验数据准确可靠。
The samples were dissolved in hydrochloric acid and nitric acid, and 30% of the acidity was determined by inductively coupled plasma atomic emission spectrometry. Silver, copper, lead and zinc in the polymetallic ores were detected by the method of silver 1.45 ug / g, copper 0.0002% Lead 0.001%, zinc 0.0008%, precision (RSD, 12) at 0.51-5.02%. The method was verified by the national first-class reference materials (GBW07162, GBW07163, GBW07165, GBW07255, GBW07256 and GBW07257) that the measured values are consistent with the standard values and the experimental data are accurate and reliable.