Simultaneous Determination of Te,Pd,Pt and Sn in Solid Waste by ICP-OES Method
The quantitative analysis of tellurium(Te),palladium(Pd),platinum(Pt),and tin(Sn)in solid waste is helpful for the identification of solid waste and hazardous waste.In this study,9 mL nitric acid,2 mL hydrochloric acid,3 mL hydrofluoric acid,and 1 mL hydrogen peroxide were used for microwave digestion of the solidwaste sample,followed by acid removal and constant volume.Finally,the content of Te,Pd,Pt,and Sn in the solution was determined using Inductively Coupled Plasma Optical Emission Spectrometer(ICP-OES).The ideal digestion temperature for pretreatment was covered in this study,along with an examination of the variations determination results between the instrument's different employed wavelengths,and detection limit was determined.The results showed that when the highest digestion temperature was 180 ℃ and the detection wavelengthrecommended by the instrument was selected,the curvescorrelation coefficients of Te,Pd,Pt,and Sn ranged from 0.9996～0.9999,with detection limits of 0.1～0.6 mg·kg-1,respectively;the precision is 1.2％～3.3％and the recovery was 94.1％～102％.This method can satisfy the needs of detectionand identification has a high detection efficiency,good precision and accuracy.
万方数据
维普
