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Determination of Trace Lead and Cadmium in Plant Samples by ICP-MS

Ruimin Wang

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Abstract

The plant samples were decomposed by microwave digestion using HNO3-H2O2 as solvent, then the in-line addition of internal standads method was used, the trace Lead(Pb) and Cadmium(Cd) in the plant samples were determined directly by ICP-MS.The detection limit of Pb and Cd were 0.010 μg/g, 0.008 μg/g, the RSD were 1.34%～6.15%, 4.53%～8.51%, and the recovery were 94.0%～102.2%, 96.0%～100.0%.ICP-MS method was proved to be simple, rapid, sensitive and precice.

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What this paper is about

The plant samples were decomposed by microwave digestion using HNO3-H2O2 as solvent, then the in-line addition of internal standads method was used, the trace Lead(Pb) and Cadmium(Cd) in the plant samples were determined directly by ICP-MS.The detection limit of Pb and Cd were 0.010 μg/g, 0.008 μg/g, the RSD were 1.34%～6.15%, 4.53%～8.51%, and the recovery were 94.0%～102.2%, 96.0%～100.0%.ICP-MS method was proved to be simple, rapid, sensitive and precice.

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Available abstract

The plant samples were decomposed by microwave digestion using HNO3-H2O2 as solvent, then the in-line addition of internal standads method was used, the trace Lead(Pb) and Cadmium(Cd) in the plant samples were determined directly by ICP-MS.The detection limit of Pb and Cd were 0.010 μg/g, 0.008 μg/g, the RSD were 1.34%～6.15%, 4.53%～8.51%, and the recovery were 94.0%～102.2%, 96.0%～100.0%.ICP-MS method was proved to be simple, rapid, sensitive and precice.

Key concepts: Cadmium, Microwave digestion, Detection limit, Inductively coupled plasma mass spectrometry, Chemistry, Inductively coupled plasma atomic emission spectroscopy, Lead (geology), Chromatography

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