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原子吸收法测定水中镉的质量控制指标研究
引用本文:姜凌霄,陈晓峰,彭刚华,陈军平,吴志强,夏新.原子吸收法测定水中镉的质量控制指标研究[J].干旱环境监测,2011,25(4):227-229,237.
作者姓名:姜凌霄  陈晓峰  彭刚华  陈军平  吴志强  夏新
作者单位:1. 江西省环境监测中心站,江西南昌,330029
2. 中国环境监测总站,北京,100012
基金项目:环保公益性行业科研专项项目
摘    要:通过全国多家实验室的大量监测数据,研究分析了镉测定的质量控制指标,并与《水质镉的测定双硫腙分光光度法》(GB/T 7471-1987)和《环境水质监测质量保证手册》(第二版)进行了比较,旨在为环境监测工作提供质量控制依据和质量控制指标。研究表明,标准样品的精密度质量控制指标范围:RSD≤5.0%和RSD’≤8.0%;准...

关 键 词:  原子吸收法  精密度  准确度

The Quality Control Index On Atomic Absorption Spectrometry For The Analysis Of Cadmium In Water
JIANG Ling-xiao,CHEN Xiao-feng,PENG Gang-hua,CHEN Jun-ping,WU Zhi-qiang,XIA Xin.The Quality Control Index On Atomic Absorption Spectrometry For The Analysis Of Cadmium In Water[J].Arid Environmental Monitoring,2011,25(4):227-229,237.
Authors:JIANG Ling-xiao  CHEN Xiao-feng  PENG Gang-hua  CHEN Jun-ping  WU Zhi-qiang  XIA Xin
Institution:1.Jiangxi Provincial Environmental Monitoring Center,Nanchang Jiangxi 330029,China;2.China Environmental Monitoring Station,Beijing 100012,China)
Abstract:On the basis of a large number of monitoring data from many laboratories nation-widely,we analyzed the quality control index of the Cd in water by atomic absorption spectrometry method,and compared with the QC index in GB/T 7471-1987 and environmental monitoring of water quality assurance manual(the second edition).The purpose of which was to provide the QC reference and QC index for the people in the monitoring area.Studies indicate that the within-laboratory relative standard deviation contro1 limit was less than 5% and the between-laboratory relative standard deviation control limit was less than 8% of standard samples.The relative error of the standard samples was limited 10%,The repeatability limit was 0.003 24~0.021 4 mg/L and the reproducibility limit was 0.010 9~0.102 mg/L.The corresponding recovery rates was less than 100%~120%(blank sample) and 90~110%(standard samples and actual samples).
Keywords:cadmium  atomic absorption spectrometry  accuracy  precision
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