Journal
MICROCHIMICA ACTA
Volume 180, Issue 5-6, Pages 509-515Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-013-0941-7
Keywords
Arsenic; Aluminium hydroxide gel; Preconcentration; Hydride generation atomic fluorescence spectrometry; Determination
Categories
Funding
- Natural Science Foundation of China [50978132, 51178213, 51238002, 51272099, 51008149]
- Program for New Century Excellent Talents in University [NCET-11-1004]
- Cultivating Program for Young Scientists of Jiangxi Province of China [20112BCB23016]
- Natural Science Foundation of Jiangxi Province [20122BAB213014, 20114BAB203018]
- Department of Education Fund of Jiangxi Province [GJJ11508]
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We describe a simple, effective, inexpensive and rapid method for the determination of trace amounts of total inorganic arsenic in water samples by means of a modified solid phase preconcentration procedure using an aluminium hydroxide gel sorbent and hydride generation atomic fluorescence spectrometry (HGAFS). This method avoids the traditional extraction procedures that are time- and solvent-consuming. The effects of quantity of adsorbent, solution pH, adsorption time and potentially interfering ions were studied. Under the optimal conditions, the detection limit is 3 ngaEuro cent L-1, and the enrichment factor is 167. The calibration plot is linear in the range from 0.05 to 10 mu gaEuro cent L-1, with a correlation coefficient of 0.9992. The relative standard deviation (RSD) was less than 6.1 % (n = 5) and recoveries in spiked environmental water were > 100 %. The method was successfully applied to the determination of total inorganic arsenic in natural water samples.
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