Verification of Atomic Fluorescence Photometric Method for Determining Arsenic in Solid Waste
In order to provide technical support for environmental protection and control in China,and further improve the key parameters in solid waste,this article verifies the determination of arsenic in HJ 702-2014 Determination of Arsenic,Mercury,Selenium,Bismuth,and Antimony in Solid Waste by Microwave Digestion/Atomic Fluorescence Method from six aspects:linear relationship,method detection limit,determination lower limit,precision,accuracy,and actual sample spiked recovery rate.The results show that the linear relationship reaches 0.999 8.When weighing 0.5 g of solid waste sample to verify arsenic(full amount),detection limit of 0.009 μg/g was measured,and the lower limit is 0.036 μ.When transferring 40 mL of solid waste leachate to verify arsenic(leachate),detection limit of 0.08μg/L was measured,and the lower limit for measuring is 0.32 μg/L.The relative standard deviations of arsenic(total amount)and arsenic(leaching solution)are 0.35%to 1.0%and 1.2%to 2.9%,respectively.The relative errors of certified reference materials for laboratory arsenic(full amount)are-4.6%to 0.85%,and the relative errors of standard concentrations for arsenic(leaching solution)are 0.25%to 3.0%,respectively.The recovery rates of solid waste arsenic(full amount)with added standards are 93.7%to 97.5%,and the recovery rates of solid waste arsenic(leaching solution)with added standards are 96.0%to 98.1%,respectively.All indicators meet the requirements of the standard method,confirming that the laboratory has the experimental conditions and technical ability to determine arsenic in solid waste by atomic fluorescence spectrophotometry.
NETL
NSTL
万方数据
维普
