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本文采用内标法及稀释法电感耦合等离子发射光谱法(ICP-AES)测定工业废水中的重金属,其结果与公认的火焰-AAS分析所得结果一致。仪器与试剂 ICP发射光谱仪:SPS 1200AR型。原子吸收分光光度计:AA 8200型。标准溶液;光谱纯试剂用2+100硝酸溶液配制成1000 mg/L标准溶液。其他试剂均为特级品。试验溶液的制备根据测定元素及共存物质的浓度取工业废水20～500 ml于基耶达烧瓶中,加10～30 ml硝酸在石棉板上直接加热分解。酸分解液用No.2滤纸过滤,原则上按10倍浓缩,将此溶液定容至50 ml,作为试验溶液。
In this paper, ICP-AES was used for the determination of heavy metals in industrial wastewater by internal standard method and dilution method. The results were in good agreement with the results of the flame-AAS analysis. Instruments and reagents ICP emission spectrometer: SPS 1200AR type. Atomic Absorption Spectrophotometer: Model AA 8200. Standard solution; spectroscopy pure reagent with 2 +100 nitric acid solution formulated into 1000 mg / L standard solution. Other reagents are special grade products. Preparation of the test solution According to the concentration of the measured elements and coexisting substances, take 20 ~ 500 ml of industrial waste water in the jieda flask, add 10 ~ 30 ml of nitric acid and heat and decompose them directly on the asbestos board. Acid decomposition liquid filter with No. 2 filter paper, in principle, according to 10 times concentrated, the solution was fixed to 50 ml, as the test solution.