| Titre : | A simple spectrophotometric method for determination of gold (III) in aqueous samples (2009) |
| Auteurs : | Yousef Fazli, Auteur ; Jalal Hassan, Auteur ; Mohamad-Hadi Karbasi, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Minerals engineering (Vol. 22 N° 2, Janvier 2009) |
| Article en page(s) : | pp. 210–212 |
| Note générale : | Génie Minier |
| Langues : | Anglais |
| Index. décimale : | 622 (Industrie minière) |
| Tags : | Gold UV–vis TMBH Water |
| Résumé : | A simple method for rapid determination of trace Au in natural water was presented by using UV–vis spectrophotometry after reaction of gold (III) with 3,3′, 5,5′-tetramethylbenzidine hydrochloride (TMBH) in acidic solution. Under the optimum conditions, in a concentration range of 100–2000 μg L−1 of Au (III) a good linear calibration graph was obtained (r = 0.9969, n = 7). The percent relative standard deviation (RSD) for determination of 1000 μg L−1 Au was 10% (n = 3) and limit of detection based on a signal-to-noise ratio (S/N) of 3 (3Sbl) was 50 μg L−1. The proposed method has been successfully applied to the determination of gold spiked and real aqueous samples. |
| DEWEY : | 622 |
| ISSN : | 0892-6875 |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0892687508001453 |
