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2010•Journal of Yunnan University of NationalitiesRequires access

Study on the Determination of Pb,Cd,Cr and Ni in Chinese Herbal Medicine by Microwave Digestion and Atomic Absorption Spectrometry

Qiufen Hu

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Abstract

A new method for the determination of Pb,Cd,Cr and Ni in Chinese herbal medicine by the microwave digestion and atomic absorption spectrometry was studied.The sample was digested by microwave digestion through using HNO3-H2O2 system.The Pb,Cd,Cr and Ni were determined by the atomic absorption spectrometry.Under the optimum microwave digestion and determination conditions,the detection limit is 0.3-0.8μg/L.The relative standard deviations are 1.8%-2.4% and the recoveries are 94%-105%.The results are satisfactory.

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What this paper is about

A new method for the determination of Pb,Cd,Cr and Ni in Chinese herbal medicine by the microwave digestion and atomic absorption spectrometry was studied.The sample was digested by microwave digestion through using HNO3-H2O2 system.The Pb,Cd,Cr and Ni were determined by the atomic absorption spectrometry.Under the optimum microwave digestion and determination conditions,the detection limit is 0.3-0.8μg/L.The relative standard deviations are 1.8%-2.4% and the recoveries are 94%-105%.The results are satisfactory.

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Available abstract

A new method for the determination of Pb,Cd,Cr and Ni in Chinese herbal medicine by the microwave digestion and atomic absorption spectrometry was studied.The sample was digested by microwave digestion through using HNO3-H2O2 system.The Pb,Cd,Cr and Ni were determined by the atomic absorption spectrometry.Under the optimum microwave digestion and determination conditions,the detection limit is 0.3-0.8μg/L.The relative standard deviations are 1.8%-2.4% and the recoveries are 94%-105%.The results are satisfactory.

Key concepts: Microwave digestion, Atomic absorption spectroscopy, Digestion (alchemy), Detection limit, Microwave, Analytical Chemistry (journal), Mass spectrometry, Chemistry

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Study on the Determination of Pb,Cd,Cr and Ni in Chinese Herbal Medicine by Microwave Digestion and Atomic Absorption Spectrometry — Research Paper | ScholarLens