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Behpour M, Attaran AM, Ghoreishi SM, et al. Column preconcentration of gold by adsorbing AuCl4- onto methyltrioctyl ammonium chloride-naphthalene and subsequent atomic absorption spectrometric determination. Anal Bioanal Chem. 2005;382(2):444-7doi: 10.1007/s00216-005-3076-9.
Behpour, M., Attaran, A. M., Ghoreishi, S. M., & Soltani, N. (2005). Column preconcentration of gold by adsorbing AuCl4- onto methyltrioctyl ammonium chloride-naphthalene and subsequent atomic absorption spectrometric determination. Analytical and bioanalytical chemistry, 382(2), 444-7. https://doi.org/10.1007/s00216-005-3076-9
Behpour, M, et al. "Column preconcentration of gold by adsorbing AuCl4- onto methyltrioctyl ammonium chloride-naphthalene and subsequent atomic absorption spectrometric determination." Analytical and bioanalytical chemistry vol. 382,2 (2005): 444-7. doi: https://doi.org/10.1007/s00216-005-3076-9
Behpour M, Attaran AM, Ghoreishi SM, Soltani N. Column preconcentration of gold by adsorbing AuCl4- onto methyltrioctyl ammonium chloride-naphthalene and subsequent atomic absorption spectrometric determination. Anal Bioanal Chem. 2005 May;382(2):444-7. doi: 10.1007/s00216-005-3076-9. Epub 2005 Apr 19. PMID: 15838616.
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Anal Bioanal Chem. 2005 May;382(2):444-7. doi: 10.1007/s00216-005-3076-9. Epub 2005 Apr 19.

Column preconcentration of gold by adsorbing AuCl4- onto methyltrioctyl ammonium chloride-naphthalene and subsequent atomic absorption spectrometric determination.

Analytical and bioanalytical chemistry

M Behpour, A M Attaran, S M Ghoreishi, N Soltani

Affiliations

  1. Department of Chemistry, College of Sciences, Kashan University, Kashan, Iran. [email protected]

PMID: 15838616 DOI: 10.1007/s00216-005-3076-9

Abstract

A sensitive, selective and simple preconcentration method for ultra-trace gold determination has been developed that uses naphthalene-methyltrioctyl ammonium chloride (Aliquat 336s) as an adsorbent. Gold, in the form of AuCl4-, was retained by the adsorbent in the column at a flow rate of 1 ml min(-1). After filtration, the solid mass consisting of the gold complex and naphthalene was dissolved out of the column with 5 ml of N,N-dimethylformamide (DMF), and the metal was then determined by atomic absorption spectrometry. In the initial solution, the calibration graph of absorbance versus gold concentration was found to be linear in the range 0.5-150 ng ml(-1) Au(III) with r=0.997 (n=9), and the 3 s detection limit was 0.428 ng ml(-1). The relative standard deviation for eight replicate measurements of 20 microg of gold was 2.14%. Preconcentration factors of 390 and 650 were achieved using 5 ml and 3 ml of DMF, respectively. The proposed method was successfully applied to the determination of gold in wastewater, processed pool water, slurry pool water, and raw well-water from the Moteh gold mine, and synthetic samples.

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