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2009•Chinese Journal of Health Laboratory TechnologyRequires access

Determination of Cr(VI) in drinking water by inductively coupled plasma-mass spectrometry

DU Er-qing

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Abstract

Objective: To determine Cr(Ⅵ)in drinking water by inductively coupled plasma-mass spectrometry(ICP-MS).Methods:Cr(Ⅵ) in drinking water was separated and concentrated by ion exchange and determined by ICP-MS.Results:The linear correlative coefficient of this method was more than 0.9998 in range of 0.0～100.0 ng/ml,the RSD(n=7) was less than 5%,the recoveries were in the range of 96.2%～107.4%,and the detection limit was 0.02 ng/ml.Conclusion:This is a feasible method with low detection limit,wide linear range,less interference,good precision and high accuracy.This method can be used for determination of Cr(Ⅵ) in different matrices.

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What this paper is about

Objective: To determine Cr(Ⅵ)in drinking water by inductively coupled plasma-mass spectrometry(ICP-MS).Methods:Cr(Ⅵ) in drinking water was separated and concentrated by ion exchange and determined by ICP-MS.Results:The linear correlative coefficient of this method was more than 0.9998 in range of 0.0～100.0 ng/ml,the RSD(n=7) was less than 5%,the recoveries were in the range of 96.2%～107.4%,and the detection limit was 0.02 ng/ml.Conclusion:This is a feasible method with low detection limit,wide linear range,less interference,good precision and high accuracy.This method can be used for determination of Cr(Ⅵ) in different matrices.

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Available abstract

Objective: To determine Cr(Ⅵ)in drinking water by inductively coupled plasma-mass spectrometry(ICP-MS).Methods:Cr(Ⅵ) in drinking water was separated and concentrated by ion exchange and determined by ICP-MS.Results:The linear correlative coefficient of this method was more than 0.9998 in range of 0.0～100.0 ng/ml,the RSD(n=7) was less than 5%,the recoveries were in the range of 96.2%～107.4%,and the detection limit was 0.02 ng/ml.Conclusion:This is a feasible method with low detection limit,wide linear range,less interference,good precision and high accuracy.This method can be used for determination of Cr(Ⅵ) in different matrices.

Key concepts: Detection limit, Inductively coupled plasma mass spectrometry, Chemistry, Linear range, Mass spectrometry, Inductively coupled plasma, Analytical Chemistry (journal), Chromatography

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