Determination of Cadmium by Graphite Furnace Atomic Absorption Spectrometry Using Ammonium Sulphate-Tris modifier

Shao Guangdi; Li Kun; Dan Xiaoquan

doi:10.13374/j.issn1001-053x.1993.04.021

Volume 15 Issue 4

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Shao Guangdi, Li Kun, Dan Xiaoquan. Determination of Cadmium by Graphite Furnace Atomic Absorption Spectrometry Using Ammonium Sulphate-Tris modifier[J]. Chinese Journal of Engineering, 1993, 15(4): 429-435. doi: 10.13374/j.issn1001-053x.1993.04.021

Citation:

Shao Guangdi, Li Kun, Dan Xiaoquan. Determination of Cadmium by Graphite Furnace Atomic Absorption Spectrometry Using Ammonium Sulphate-Tris modifier[J]. Chinese Journal of Engineering, 1993, 15(4): 429-435. doi: 10.13374/j.issn1001-053x.1993.04.021

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Determination of Cadmium by Graphite Furnace Atomic Absorption Spectrometry Using Ammonium Sulphate-Tris modifier

doi: 10.13374/j.issn1001-053x.1993.04.021

1. Department of Chemisity, USTB;
2. Research Center for Eco-Enviromental Science Academia Sinica

Received Date: 1992-09-21
Available Online: 2021-10-18

Abstract

Abstract

A method has been developed for the determination of Cd in enviromental and biological samples by platform graphite furnace atomic absorption spectrometry. Ammonium sulphate and tris-(hydroxymethyl)-aminomethane (Tris) were employed as a chemical modifier. The tolerable pyrolysis temperature for Cd was raised to 850℃ in the presence of modifier, the sensitivity for the determination of Cd was also improved if compared with that obtained by using (NH₄)₃PO₄-Mg(NO₃)₂ and (NH₄)₂PO₄-HNO₃ as chemical modifier.
- atomic adsorption spectrometry,
- cadmium,
- chemical modification,
- (NH₄)₂SO₄-Tris,
- biological samples