Evaluation of uncertainty in determination of silicon content in soil conditioner by ICP-0ES
Niu Dongjing 1, Cao Miao 2
1. Hebei Chemical Industry Research Institute Corporation Ltd., Shijiazhuang 050000, China; 2. Hebei Institute of Product Quality Supervision and Inspection, , Shijiazhuang 050000, China
Abstract:According to standard NY/T 2272-2012, the sources of various factors influencing the uncertainty in the determination of silicon content in soil conditioner by inductively coupled plasma emission spectrometer were discussed. The sample liquid was prepared by extraction, and the calibration system was established; the plasma emission spectrometer was calibrated by caleulation, the working curve was drawn, the sample was measured, and the mass fraction of silicon element was calculated by calculation; the uncertainty of sample weighing, sample liquid volume, preparation of standard solution and standard curve fitting, repeatability change and recovery determination were evaluated, it is calculated that the synthetic uncertainty of the determination of silicon content in soil conditioner by ICP method was 0.042%, and the expanded uncertainty U was 0.018%. The introduced uncertainty factors had the greatest influence on the determination results of silicon content in the overall soil conditioner, which it provides a reference for laboratory quality control and uncertainty evaluation of soil conditioner measurement by ICP-OES method.
牛冬静1,曹 淼2. ICP-0ES法测定土壤调理剂硅含量的不确定度评定[J]. 煤炭与化工, 2022, 45(12): 140-144.
Niu Dongjing 1, Cao Miao 2. Evaluation of uncertainty in determination of silicon content in soil conditioner by ICP-0ES. CCI, 2022, 45(12): 140-144.