2009Zhongguo redai yixueRequires access

Determination of lead and cadmium in ceramics food containers by GFAAS.

Feng YinFeng, Huang Cheng, Zhou Ri-dong

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Abstract

Objective To establish a method for determination of lead and cadmium in ceramics for food containers by GFAAS. Methods The samples were immersed with 4%(v/v)acetic acid solution. Then a certain volume of soaking liquid was injected into the graphite furnace atomic absorption spectrometer(GFAAS)for detection with matrix modifier ammonium dihydrogen phosphate. Results The recovery rate,relative standard deviation and detection limit were 90%~110%,3.0% and 1.5μg/L for lead respectively,and 93% ~107% ,2.4% and 0.04μg/L for cadmium respectively. Conclusion The method is suitable for determination of lead and cadmium in ceramics for food containers by GFAAS.

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Objective To establish a method for determination of lead and cadmium in ceramics for food containers by GFAAS. Methods The samples were immersed with 4%(v/v)acetic acid solution. Then a certain volume of soaking liquid was injected into the graphite furnace atomic absorption spectrometer(GFAAS)for detection with matrix modifier ammonium dihydrogen phosphate. Results The recovery rate,relative standard deviation and detection limit were 90%~110%,3.0% and 1.5μg/L for lead respectively,and 93% ~107% ,2.4% and 0.04μg/L for cadmium respectively. Conclusion The method is suitable for determination of lead and cadmium in ceramics for food containers by GFAAS.

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Available abstract

Objective To establish a method for determination of lead and cadmium in ceramics for food containers by GFAAS. Methods The samples were immersed with 4%(v/v)acetic acid solution. Then a certain volume of soaking liquid was injected into the graphite furnace atomic absorption spectrometer(GFAAS)for detection with matrix modifier ammonium dihydrogen phosphate. Results The recovery rate,relative standard deviation and detection limit were 90%~110%,3.0% and 1.5μg/L for lead respectively,and 93% ~107% ,2.4% and 0.04μg/L for cadmium respectively. Conclusion The method is suitable for determination of lead and cadmium in ceramics for food containers by GFAAS.

Key concepts: Graphite furnace atomic absorption, Cadmium, Detection limit, Chemistry, Ammonium dihydrogen phosphate, Mass spectrometry, Matrix (chemical analysis), Atomic absorption spectroscopy

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