ICP-AES标准加入法测定电镀排放废水中Cd、Cr、Ni

摘要

电镀排放废水基体复杂多变，采用电感耦合等离子体发射光谱（ICP-AES）标准加入法测定电镀排放废水中的Cd、Cr、Ni，可解决基体匹配的难题。对仪器分析条件的选择、酸度和盐度的影响、共存元素的干扰进行了研究，该方法回收率为95%～106%，RSD为3.7%～6.3%。%Wastewater matrix from electroplating wastewater is complex and multivariable. The method of standard addition of inductively coupled plasma atomic emission spectrometry (ICP-AES) has been used for the determination of the contents of Cd,Cr,and Ni in electroplating wastewater,in order to solve the problem of matrix matching. The selection of instrument analysis conditions ,the influence of acidity and salinity ,and the interference of coexisting elements are studied. The recovery rate of the method is 95%-106%,and RSD 3.7%-6.3%.