四川环境2024，Vol.43Issue(4)：114-118,5.DOI:10.14034/j.cnki.schj.2024.04.015
ICP-OES测定地下水中锰含量的不确定度评定
Uncertainty Evaluation of Manganese in Groundwater Inductively Coupled Plasma-optical Emission Spectrometry
胡艳 1黄福硕 2熊静 1周薇 1李叶1
作者信息
- 1. 四川省泸州生态环境监测中心站,四川泸州 646000
- 2. 四川省泸州市纳溪生态环境局,四川泸州 646300
- 折叠
摘要
Abstract
In order to improve the accuracy of groudwater monitoring data,this paper used the inductively coupled plasma-optical emission spectrometry(ICP-OES)to determine the manganese content in groudwater and the uncertainty of the whole analysis process was evaluated,and find out the main factors affecting the manganese content in groudwater.According to the evaluation theory of Evaluation and Expression of Uncertainty in Measurement(JJF1059.1-2012)and the relevant regulations of Uncertainty Evaluation Guidelines in Chemical Analysis(CNAS-GL006-2019),and the mathematical model was established,the main sources of uncertainty were analyzed,each uncertainty component was calculated and synthesized to obtain the extended uncertainty of manganese content in groudwater.The measurement results showed that the content of manganese in groudwater was 0.0396 mg/L,the expanded uncertainty was 0.002 mg/L(k=2),and the result was expressed as 0.0396±0.002 mg/L.The main factors affecting the sample measurement error were the instrument performance,the sample repeatability,the uncertainty of standard solution,the preparation of standard curve and its fitting,of which the preparation of standard solution and itself had the greatest impact and need to be mainly controlled in the monitoring process.This study can provide reference for the uncertainty evaluation of ICP-OES determination of manganese content in groundwater.关键词
ICP-OES法/地下水/锰含量/不确定度Key words
ICP-OES/groundwater/manganese/uncertainty分类
资源环境引用本文复制引用
胡艳,黄福硕,熊静,周薇,李叶..ICP-OES测定地下水中锰含量的不确定度评定[J].四川环境,2024,43(4):114-118,5.
