Determination of twelve elements in lead-free solder by inductively coupled plasma atomic emission spectrometry
YANG Yong-xing1,2, ZHENG Huan-jun1, YANG Wen-jing1
1. The Fifth Research Institute of Ministry of Industry and Information Technology of East China, Suzhou 215011,China; 2. The Fifth Research Institute of Ministry of Industry and Information Technology,Guangzhou 510610,China
Abstract：The lead-free solder sample was dissolved with aqua regia. The calibration curve was prepared by matrix matching method to eliminate the influence of matrix interference on the determination results. The determination of twelve elements in lead-free solder (including silver, copper, lead, iron, zinc, cadmium, arsenic, aluminum, antimony, bismuth, indium and nickel) by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. Under the selected experimental conditions, the detection limits of elements were between 0.000 2 μg/mL and 0.016 μg/mL. The linear correlation coefficients of calibration curves of elements were higher than 0.999 5. The sample was determined according to the experimental method, and the recoveries of standard addition test were between 87% and 125%. The relative standard deviations (RSD, n=6) of determination results were between 0.25% and 5.1%. The found results were consistent with the reference values.
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