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本法一次取样能连续测定Cu、Pb、Zn、Ni、Co、Cd、Fe等七元素,方法简单、快速、重现性好。采用日立508,光源Cu、Pb、Zn、Ni、Co、Cd空心阴极灯。工作条件见表1。分析步骤:吸取水样于150ml烧杯5ml中,加5ml硝酸加热消化,蒸干,冷却,用pH4.2NaAc-NH_4Ac-HAc微热溶解盐类,移入50ml容量瓶以pH4.2NaAc-NH_4Ac-HAc稀释到刻度,摇匀,取清液10ml于25ml比色管中加入2％APDC5ml摇匀,加入10mlMIBK,萃取1.5分钟,静置分层,
This method can be a sample of continuous determination of Cu, Pb, Zn, Ni, Co, Cd, Fe and other seven elements, the method is simple, fast, good reproducibility. Hitachi 508, light source Cu, Pb, Zn, Ni, Co, Cd hollow cathode lamp. Working conditions in Table 1. Analysis steps: Absorb water samples in 150ml beaker 5ml, add 5ml nitric acid heating and digestion, evaporated and cooled, pH4.2NaAc-NH_4Ac-HAc gently dissolved salt, into a 50ml volumetric flask to pH4.2NaAc-NH4Ac-HAc diluted To the scale, shake, take clear liquid 10ml in 25ml colorimetric tube by adding 2% APDC5ml shake, add 10mlMIBK, extraction 1.5 minutes, let stand stratification,