| Titre : | Simplified cloud point extraction-inductively coupled plasma mass spectrometry for the preconcentration/analysis of ultra-trace gold (2011) |
| Auteurs : | Songqing Chen, Auteur ; Xiashi Zhu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Minerals engineering (Vol. 23 N° 14, Novembre 2010) |
| Article en page(s) : | pp. 1152–1154 |
| Note générale : | Génie Minier |
| Langues : | Anglais |
| Tags : | 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 |
