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2015•Anhui nongye kexueRequires access

Determination of 8 Heavy Metals in Vegetables by Inductively Coupled Plasma Mass Spectrometry

Le Yang

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Abstract

[Objective]A method for determination of heavy metals in vegetables by inductively coupled plasma mass spectrometry( ICP-MS)is proposed. [Method] The samples were digested by a mixed reagent of HNO3- H2O2 sealed vessels. Rh and Re were selected as internal standard to compensate the analytical signal drift. The method was verified by national standard substance elements. [Result] It is shown that the linear correlation coefficient of 8 heavy metals is not less than 0. 999 3. The limits of detection( LODs) is between 0. 003- 0. 06 μg / L,standard addition recovery rate is between 95. 6%- 104. 9%. The relative standard deviations( RSD) is between 0. 53%- 1. 84%. [Conclusion] The method is simple,accurate and highly sensitive for the determination of 8 heavy metals in vegetables.

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What this paper is about

[Objective]A method for determination of heavy metals in vegetables by inductively coupled plasma mass spectrometry( ICP-MS)is proposed. [Method] The samples were digested by a mixed reagent of HNO3- H2O2 sealed vessels. Rh and Re were selected as internal standard to compensate the analytical signal drift. The method was verified by national standard substance elements. [Result] It is shown that the linear correlation coefficient of 8 heavy metals is not less than 0. 999 3. The limits of detection( LODs) is between 0. 003- 0. 06 μg / L,standard addition recovery rate is between 95. 6%- 104. 9%. The relative standard deviations( RSD) is between 0. 53%- 1. 84%. [Conclusion] The method is simple,accurate and highly sensitive for the determination of 8 heavy metals in vegetables.

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Available abstract

[Objective]A method for determination of heavy metals in vegetables by inductively coupled plasma mass spectrometry( ICP-MS)is proposed. [Method] The samples were digested by a mixed reagent of HNO3- H2O2 sealed vessels. Rh and Re were selected as internal standard to compensate the analytical signal drift. The method was verified by national standard substance elements. [Result] It is shown that the linear correlation coefficient of 8 heavy metals is not less than 0. 999 3. The limits of detection( LODs) is between 0. 003- 0. 06 μg / L,standard addition recovery rate is between 95. 6%- 104. 9%. The relative standard deviations( RSD) is between 0. 53%- 1. 84%. [Conclusion] The method is simple,accurate and highly sensitive for the determination of 8 heavy metals in vegetables.

Key concepts: Inductively coupled plasma mass spectrometry, Chemistry, Reagent, Mass spectrometry, Detection limit, Recovery rate, Inductively coupled plasma, National standard

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