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Simplified cloud point extraction-inductively coupled plasma mass spectrometry for the preconcentration/analysis of ultra-trace gold / Songqing Chen in Minerals engineering, Vol. 23 N° 14 (Novembre 2010) 

Public ISBD [article]  in Minerals engineering > Vol. 23 N° 14 (Novembre 2010) . - pp. 1152–1154 Titre : Simplified cloud point extraction-inductively coupled plasma mass spectrometry for the preconcentration/analysis of ultra-trace gold Type de document : texte imprimé Auteurs : Songqing Chen, Auteur ; Xiashi Zhu, Auteur Année de publication : 2011 Article en page(s) : pp. 1152–1154 Note générale : Génie Minier Langues : Anglais (eng) Mots-clés : Gold  Triton  X-114  Cloud  point  extraction  Inductively  coupled  plasma  mass  spectrometry Résumé : A new cloud point extraction method for the preconcentration of ultra-trace gold as a prior step to its determination by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. The method is based on the cloud point extraction (CPE) of gold in the non-ionic surfactant Triton X-114 without a chelating agent. The parameters of CPE were investigated in detail. At optimum conditions, the linear range of 5.0–200.0 ng L−1 of Au(III) and the detection limits of 1.1 ng L−1 for Au(III) along with enrichment factors of 7.5, were obtained. The proposed method was applied to determination of ultra-trace amounts of gold in water samples with satisfactory results. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687510001780 [article] Simplified cloud point extraction-inductively coupled plasma mass spectrometry for the preconcentration/analysis of ultra-trace gold [texte imprimé] / Songqing Chen, Auteur ; Xiashi Zhu, Auteur . - 2011 . - pp. 1152–1154. Génie Minier Langues : Anglais (eng) in Minerals engineering > Vol. 23 N° 14 (Novembre 2010) . - pp. 1152–1154 Mots-clés : Gold  Triton  X-114  Cloud  point  extraction  Inductively  coupled  plasma  mass  spectrometry Résumé : A new cloud point extraction method for the preconcentration of ultra-trace gold as a prior step to its determination by inductively coupled plasma mass spectrometry (ICP-MS) has been developed. The method is based on the cloud point extraction (CPE) of gold in the non-ionic surfactant Triton X-114 without a chelating agent. The parameters of CPE were investigated in detail. At optimum conditions, the linear range of 5.0–200.0 ng L−1 of Au(III) and the detection limits of 1.1 ng L−1 for Au(III) along with enrichment factors of 7.5, were obtained. The proposed method was applied to determination of ultra-trace amounts of gold in water samples with satisfactory results. DEWEY : 622 ISSN : 0892-6875 En ligne : http://www.sciencedirect.com/science/article/pii/S0892687510001780