电感耦合等离子体发射光谱(ICP-OES)法测定污水中锌含量的不确定度评定  

Evaluation of Uncertainty in the Measuring Zinc in Wastewater by Inductively Coupled Plasma Emission Spectrometry(ICP-OES)

作　　者：赵秀云 张鑫[1] 赵彩霞[1,2] 朱劼[1] 金凤明 Zhao Xiuyun;Zhang Xin;Zhao Caixia;Zhu Jie;Jin Fengming(National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization,Changzhou University,Changzhou 213164,China;College of Petrochemical Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学生物质高效炼制及高质化利用国家地方联合工程研究中心,江苏常州213164 [2]常州大学石油化工学院,江苏常州213164

出　　处：《山东化工》2024年第9期171-174,178,共5页Shandong Chemical Industry

摘　　要：通过建立不确定度数学模型,对ICP-OES测定污水中锌含量实验中各不确定度分量进行评估,计算相对标准不确定度和扩展不确定度。实验结果中的不确定度来源主要有标准工作曲线拟合、标准溶液配制和仪器稳定性等。通过合成各不确定度分量,可得ICP-OES法测定污水中锌含量的标准不确定度为0.079 mg/L,扩展不确定度为0.16 mg/L。当置信水平达到95%时,该污水中锌的含量为(8.69±0.16)mg/L。This experiment evaluated the uncertainty of measuring zinc in wastewater by ICP-OES.By creating a mathematical model of uncertainty,each component of uncertainty was evaluated in the experiment,and the standard uncertainty,and extended uncertainty were calculated.The sources of uncertainty in experimental results mainly include fitting of standard working curve,standard solution preparation,and treatment,instrument stability,etc.By combining various uncertainty components,the standard uncertainty of the measuring zinc in wastewater by ICP-OES is 0.079 mg/L,the standard uncertainty is,and the extended uncertainty is 0.16 mg/L.When the confidence level is 95%,the content of zinc in the wastewater is(8.69±0.16)mg/L.

关 键 词：ICP-OES 锌含量 不确定度 评定 

分 类 号：O657.31[理学—分析化学]