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目前,铅精矿中高含量银的测定采用国家标准GB8152.9-89火试金法测定银,测定范围在100—5000g/t的银量。但是,火试金法测定银的含量,要求具备特殊的仪器设备,且实验室要求通风好,缺点是操作繁琐费时,分析成本高,对于日常生产的化验指导工作极不适合。此外,我们公司的化验室在通风条件及必要的仪器设备更不具备要求。而国家标准GB8152.10-89火焰原子吸收分光光度法测定铅精矿中银含量的范围是20—100g/t,不能满足我们公司铅精矿中银含量在1500—3000g/t的测定要求。因此,我提出了用原子吸收分光光度法测定铅精矿中高含量银。
At present, the determination of high content of silver in lead concentrate by the national standard GB8152.9-89 fire test gold determination of silver, the determination of the range of 100-5000g / t of silver. However, the fire test method for the determination of silver content, requires special equipment, and laboratory requirements for ventilation, the disadvantage is the tedious and time-consuming operation, the analysis of high cost, for daily production of laboratory guidance is extremely unsuitable. In addition, our company’s laboratories do not have the required ventilation equipment and necessary equipment. The national standard GB8152.10-89 Flame atomic absorption spectrophotometric determination of lead in the silver content of the range of 20-100g / t, can not meet the company’s lead concentrate in the silver content of 1500-3000g / t determination requirements. Therefore, I proposed using atomic absorption spectrophotometry to determine the high content of silver in lead concentrate.