电感耦合等离子体原子发射光谱法测定地下水中铁和锰
DETERMINATION OF IRON AND MANGANESE IN GROUNDWATER BY INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETRY
李玲娜 1苏凌云 1焦元海 1申焕1
作者信息
- 1. 云南省核工业二○九地质大队,云南昆明 650000
- 折叠
摘要
地下水水样在硝酸、过氧化氢消解后,以Fe259.940nm、Mn257.610nm作为分析谱线,以电感耦合等离子体发射光谱法(ICP-OES)测定水样中铁和锰.试验结果表明:合理的选择分析谱线,样品中共存元素均不会干扰测定.铁检出限 0.006μg·mL-1、锰检出限 0.002μg·mL-1.对 2 种水质国家标准样品进行12 次测定,测定值与认定值基本一致,相对标准偏差 0.45%～2.26%,加标回收率 96.8%～104.0%.该方法操作简单,灵敏度高,结果准确、可靠.
Abstract
After digestion with nitric acid and hydrogen peroxide,the iron and manganese contents in the groundwater samples were determinedby using inductively coupled plasma emission spectroscopy(ICP-OES)with spectral lines of Fe259.940nm and Mn257.610nm.The experimental results indicate that when selecting appropriate analytical spectral lines,the determination will not be disturbed by coexisting elements in the sample.The detection limits for iron and manganese are 0.006 μ g·mL-1 and 0.002 μ g·mL-1,respectively.Two national standard samples of water quality were tested for 12 times,and the measured values were basically consistent with the certified values,with a relative standard deviation of 0.45%～2.26%and a recovery rate of 96.8%～104.0%.The method is simple,sensitive,accurate and reliable.
关键词
地下水/铁/锰/电感耦合等离子体发射光谱法Key words
Groundwater/Iron/Manganese/Inductively Coupled Plasma Emission Spectrometry引用本文复制引用
出版年
2024
NETL
NSTL
万方数据