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2010•Journal of Kunming Metallurgy CollegeRequires access

Determination of Lead in Tea by Hydride Generation-atomic Fluorescence Spectrometry

Zhou Qing

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Abstract

For determination of lead content in tea,Tea samples were digested by mixed acid of HNO3 and HClO4,and lead in them was determined by Hydride Generation-Atomic Fluorescence Spectrometry.The instrument conditions and hydride generation conditions were tested.The method′s detection limit of Pb was 0.021 ng/mL,the relative standard deviation was 3.12% and 3.69%.Linear equation was y=52.724x+104.094,and the correlation coefficient was R2 =0.999 2.

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For determination of lead content in tea,Tea samples were digested by mixed acid of HNO3 and HClO4,and lead in them was determined by Hydride Generation-Atomic Fluorescence Spectrometry.The instrument conditions and hydride generation conditions were tested.The method′s detection limit of Pb was 0.021 ng/mL,the relative standard deviation was 3.12% and 3.69%.Linear equation was y=52.724x+104.094,and the correlation coefficient was R2 =0.999 2.

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Available abstract

For determination of lead content in tea,Tea samples were digested by mixed acid of HNO3 and HClO4,and lead in them was determined by Hydride Generation-Atomic Fluorescence Spectrometry.The instrument conditions and hydride generation conditions were tested.The method′s detection limit of Pb was 0.021 ng/mL,the relative standard deviation was 3.12% and 3.69%.Linear equation was y=52.724x+104.094,and the correlation coefficient was R2 =0.999 2.

Key concepts: Hydride, Detection limit, Relative standard deviation, Chemistry, Analytical Chemistry (journal), Mass spectrometry, Correlation coefficient, Fluorescence

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