Speciation Analysis of Inorganic Arsenic in Coal Samples
A new method was developed for the speciation of inorganic arsenic in coal samples by liquid chromatography coupled to hydride generation atomic fluorescence spectrometry after microwave-assisted extraction. Effective extract of As(III), As(V) in coal sample was achieved by 1.0molL-1 H3PO4 and 0.1 molL-1ascorbic acid. Under the optimized conditions, the limits of detection were 0.01 ugL-1and 0.02 ugL-1for As(III), As(V). The relative standard deviation were 2.4 %, 3.3 % (c= 20.0 gL-1, n=7). The proposed method was successfully applied for the determination of speciation of inorganic arsenic in coal samples and GBW11117.
Qunjie Xu, Yanzhong Ju and Honghua Ge
M. Sun et al., "Speciation Analysis of Inorganic Arsenic in Coal Samples", Advanced Materials Research, Vols. 610-613, pp. 1991-1995, 2013