Determination of aluminum in aquatic product by graphite furnace atomic absorption spectrometry with microwave digestion.
Jie Sun, Zhu Jia, Ling Qiao, Xu Hua
Abstract
Jie Sun, Zhu Jia, Ling Qiao, Xu Hua
Abstract
A novel method for determination of aluminum in aquatic products was developed in this paper. The sample was dissolved with microwave digestion and determined by graphite furnace atomic absorption spectrometry. 0.3% Mg(NO3)2 and 0.1% Pd(NO3)2-0.3% Mg(NO3)2-1.0% NH4H2PO4 were chosen as matrix modifier. Results showed that the best matrix modifier, pyrolysis temperatures and atomization temperature were 0.1%Pd(NO3)2 -0.3%Mg(NO3)2-1.0% NH4H2PO4, 1300 ℃ and 2350 ℃, respectively. The detection limit, RSD and recovery rate of the method were 2.08 μg/L, 2.44%-6.81%, and 94.10%-107.95%, respectively. The method was fast and effective for detection of aluminum content in aquatic products.
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A novel method for determination of aluminum in aquatic products was developed in this paper. The sample was dissolved with microwave digestion and determined by graphite furnace atomic absorption spectrometry. 0.3% Mg(NO3)2 and 0.1% Pd(NO3)2-0.3% Mg(NO3)2-1.0% NH4H2PO4 were chosen as matrix modifier. Results showed that the best matrix modifier, pyrolysis temperatures and atomization temperature were 0.1%Pd(NO3)2 -0.3%Mg(NO3)2-1.0% NH4H2PO4, 1300 ℃ and 2350 ℃, respectively. The detection limit, RSD and recovery rate of the method were 2.08 μg/L, 2.44%-6.81%, and 94.10%-107.95%, respectively. The method was fast and effective for detection of aluminum content in aquatic products.
Key concepts: Graphite furnace atomic absorption, Microwave digestion, Detection limit, Pyrolysis, Matrix (chemical analysis), Atomic absorption spectroscopy, Graphite, Chemistry