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2004•Journal of Huizhou UniversityRequires access

THE MEASUREMENT OF TRACE PB AND CD IN CALCIUM NOURISHMENT ORAL DRINKS BY USING THE METHOD OF GRAPHITE FURNACE ATOMIC ABSORPTION

Ma Yi

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Abstract

The paper discussed the measurement of trace Pb and Cd in Calcium (Ca) nourishment oral drinks by the adoption of Zeeman effect of graphite furnace atomic absorption method, and studied the temperature raising procedure of graphite furnace as well as the effects of matrix modifier on the determination . The measuring results indicate that the application of Zeeman background absorption method and the use of HNO3 and NH4NO3 as matrix modifier can greatly reduce the matrix disturbance in the water sample, obtaining over 97 % of the rate of recovery, thus satisfactory measurement results are achieved.

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What this paper is about

The paper discussed the measurement of trace Pb and Cd in Calcium (Ca) nourishment oral drinks by the adoption of Zeeman effect of graphite furnace atomic absorption method, and studied the temperature raising procedure of graphite furnace as well as the effects of matrix modifier on the determination . The measuring results indicate that the application of Zeeman background absorption method and the use of HNO3 and NH4NO3 as matrix modifier can greatly reduce the matrix disturbance in the water sample, obtaining over 97 % of the rate of recovery, thus satisfactory measurement results are achieved.

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Available abstract

The paper discussed the measurement of trace Pb and Cd in Calcium (Ca) nourishment oral drinks by the adoption of Zeeman effect of graphite furnace atomic absorption method, and studied the temperature raising procedure of graphite furnace as well as the effects of matrix modifier on the determination . The measuring results indicate that the application of Zeeman background absorption method and the use of HNO3 and NH4NO3 as matrix modifier can greatly reduce the matrix disturbance in the water sample, obtaining over 97 % of the rate of recovery, thus satisfactory measurement results are achieved.

Key concepts: Graphite furnace atomic absorption, Graphite, Zeeman effect, Matrix (chemical analysis), Atomic absorption spectroscopy, Analytical Chemistry (journal), Absorption (acoustics), Recovery rate

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