摘要
采用电感耦合等离子体原子发射光谱法(Inductively Coupled Plasma Emission Spectrometry,ICP-OES)测定盲样中重金属镉的含量,分析不确定度的主要来源,计算各不确定度分量。结果表明:不确定度主要来源于标准曲线拟合、标准溶液配制、测量结果的重复性,ICP-OES法测定盲样中镉的质量浓度为6.20 mg/L,扩展不确定度为0.12 mg/L(P=95.0%,k=2)。
The content of cadmium in blind samples was determined by Inductively Coupled Plasma Emission Spectrometry(ICP-OES).The sources of determination uncertainty were analyzed,and each component of uncertainty was also quantified.The major uncertainty sources were obtained from the variability of calibration curve,standard solution preparation,and measurement repeatability.The mass concentration of cadmium in blind samples was 6.20 mg/L and the expanded uncertainty was 0.12 mg/L(P=95.0%,k=2).
作者
姜颖
Jiang Ying(Public Laboratory Platform,Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China)
出处
《广东化工》
CAS
2020年第11期200-201,共2页
Guangdong Chemical Industry
