Determination of Hexavalent Chromium in Soil by Inductively Coupled Plasma-Mass Spectrometry with Alkaline Digestion-Ion Exchange

BACKGROUND: Hexavalent chromium Cr（Ⅵ） is one of the basic monitoring indicators of soil in construction land. It is of great significance to carry out soil hexavalent chromium monitoring in the prevention and control of environmental pollution. At present, the standard method of hexavalent chromium...

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Bibliographic Details
Published inYankuàng cèshì no. 5; p. 826
Main Authors Chu, Linlin, Wang, Jingyun, Jin, Xiaoxia, Wang, Bifen, Kong, Cuiyu
Format Journal Article
LanguageChinese
Published Beijing National Research Center of Geoanalysis 01.01.2022
Subjects
Alkaline digestion
Atomic absorption analysis
Atomic absorption spectrophotometry
Cation exchanging
Cationic polymerization
Chromium
Dilution
Dissolved solids
Emission spectroscopy
Hexavalent chromium
Hydrogen ions
Inductively coupled plasma mass spectrometry
Interference
Ion exchange
Mass spectrometry
Pollution monitoring
Resins
Scientific imaging
Sensitivity
Soil pollution
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Summary:BACKGROUND: Hexavalent chromium Cr（Ⅵ） is one of the basic monitoring indicators of soil in construction land. It is of great significance to carry out soil hexavalent chromium monitoring in the prevention and control of environmental pollution. At present, the standard method of hexavalent chromium in soil is flame atomic absorption spectrometry（FAAS）. The FAAS method has a high detection limit（0.5 mg/kg）, and serious matrix effect, and cannot meet the analysis of Cr（Ⅵ） in low-concentration soil samples.OBJECTIVES: To establish a convenient and high sensitivity method for determination of low-concentration hexavalent chromium in soil.METHODS: An ion-exchange-inductively coupled plasma-mass spectrometry（ICP-MS） method was developed to determine the content of hexavalent chromium in soil by extracting hexavalent chromium with alkali solution. The resin content, mixing speed, extraction temperature and extraction time were studied. The measurement results were compared with the flame atomic absorption spectropho
ISSN:0254-5357
DOI:10.15898/j.cnki.11-2131/td.202203240060