原子吸收测定铜精矿中铅的不确定度评定  

Evaluation of uncertainty in determination of lead in copper concentrate by atomic absorption spectrometry

作　　者：张健 李剑 杨娟[1] 邓婷婷 徐晨曦 ZHANG Jian;LI Jian;YANG Juan;DENG Tingting;XU Chenxi(Inspection and testing management Center,Yunnan Copper Co.,LTD,Yunnan Kunming 650102)

机构地区：[1]云南铜业股份有限公司检验检测管理中心,云南昆明650102

出　　处：《江西化工》2022年第1期47-52,共6页Jiangxi Chemical Industry

摘　　要：采用原子吸收分光光度计对铜精矿中铅含量测定的不确定度来源进行分析和计算,根据化学分析项目建立数学模型,找出影响不确定度的因素,包括:样品称量、稀释定容、标准溶液配制、仪器分析等几个步骤,为进一步减少试验过程中的误差,提高试验数据的准确性提供参考依据。The source of uncertainty in the determination of lead content in copper concentrates was analyzed and calculated using atomic absorption photometer,and the mathematical model was established according to the chemical analysis project to find out the factors influencing the uncertainty,it includes:sample weighing,dilution and constant volume,standard solution preparation,instrument analysis and so on.It provides reference for reducing the error in the test process and improving the accuracy of test data.

关 键 词：原子吸收 不确定度 铅 

分 类 号：O657.31[理学—分析化学] TD926.3[理学—化学]