原子吸收光谱法和ICP-OES法测定电镀废水中的低浓度镍元素的影响因素分析

Analysis of Influencing Factors for Determination of Low Concentration Nickel in Electroplating Wastewater by AAS and ICP-OES

对AAS法和ICP-OES法测定电镀废水中低浓度镍的干扰因素进行了分析,并制备模拟样品进行试验研究。研究结果表明:在Ni浓度约为0.5 mg/L时,样品中高浓度的盐分是造成AAS和ICP-OES测定结果存在差异的主要影响因素,主要表现为对ICP-OES测定Ni产生显著负干扰。

The interference factors of the determination for low-concentration nickel in electroplating wastewater using AAS method and ICP-OES method were analyzed.The simulated samples were prepared for testing.The test results show that when the nickel concentration is about 0.5 mg/L,the high concentration of salt in the sample is the main influencing factor that causes the different testing results between the AAS and ICP-OES.The testing results of nickel by ICP-OES method was negatively interfered with high salinity.