Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples
A stripping chronopotentiometric method was developed for reliable determination of gold in geological samples. Gold in gold ore and steam sediment samples was determined by constant current film stripping chronopotentiometry at a bare glassy carbon working electrode. The following optimum condition...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Walailak University
2011-11-01
|
| Series: | Walailak Journal of Science and Technology |
| Subjects: | |
| Online Access: | http://wjst.wu.ac.th/index.php/wjst/article/view/53 |
| _version_ | 1811298906766573568 |
|---|---|
| author | Nipaporn MEEPUN Suphawuth SIRIKET Saravut DEJMANEE Roongroje RATANA-OHPAS |
| author_facet | Nipaporn MEEPUN Suphawuth SIRIKET Saravut DEJMANEE Roongroje RATANA-OHPAS |
| author_sort | Nipaporn MEEPUN |
| collection | DOAJ |
| description | A stripping chronopotentiometric method was developed for reliable determination of gold in geological samples. Gold in gold ore and steam sediment samples was determined by constant current film stripping chronopotentiometry at a bare glassy carbon working electrode. The following optimum conditions were obtained: 0.5 M hydrochloric acid as a supporting electrolyte, an electrolysis potential of –0.6 V vs. saturated calomel electrode (SCE), an electrolysis time of 2 min and a constant oxidative current of +4 μA. A linear concentration range was obtained from 1.0 to 20 mg/l. The detection limit was 0.27 mg/l (n = 10) and the relative a standard deviations of 1.0 mg/l Au(III) was 2.8 % (n = 10). In order to check the analytical accuracy, standard solution was spiked in a sample and the recoveries were found at 100.1 to 105.8 %. The results revealed that the quantity of gold in gold ore and sediment were 0.6 to 3.3 % and 0.9 to 1.2 %, respectively. |
| first_indexed | 2024-04-13T06:27:15Z |
| format | Article |
| id | doaj.art-41d607ae9e24401fb1342184bfaff96e |
| institution | Directory Open Access Journal |
| issn | 1686-3933 2228-835X |
| language | English |
| last_indexed | 2024-04-13T06:27:15Z |
| publishDate | 2011-11-01 |
| publisher | Walailak University |
| record_format | Article |
| series | Walailak Journal of Science and Technology |
| spelling | doaj.art-41d607ae9e24401fb1342184bfaff96e2022-12-22T02:58:21ZengWalailak UniversityWalailak Journal of Science and Technology1686-39332228-835X2011-11-017110.2004/wjst.v7i1.5349Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological SamplesNipaporn MEEPUN0Suphawuth SIRIKET1Saravut DEJMANEE2Roongroje RATANA-OHPAS3Department of Chemistry, Faculty of Science and Technology, Suratthani Rajabhat University, Suratthani 81400Department of Chemistry, Faculty of Science and Technology, Phuket Rajabhat University, Phuket 83000Division of Chemistry, School of Science, Walailak University, Nakhon Si Thammarat 80161Division of Chemistry, School of Science, Walailak University, Nakhon Si Thammarat 80161A stripping chronopotentiometric method was developed for reliable determination of gold in geological samples. Gold in gold ore and steam sediment samples was determined by constant current film stripping chronopotentiometry at a bare glassy carbon working electrode. The following optimum conditions were obtained: 0.5 M hydrochloric acid as a supporting electrolyte, an electrolysis potential of –0.6 V vs. saturated calomel electrode (SCE), an electrolysis time of 2 min and a constant oxidative current of +4 μA. A linear concentration range was obtained from 1.0 to 20 mg/l. The detection limit was 0.27 mg/l (n = 10) and the relative a standard deviations of 1.0 mg/l Au(III) was 2.8 % (n = 10). In order to check the analytical accuracy, standard solution was spiked in a sample and the recoveries were found at 100.1 to 105.8 %. The results revealed that the quantity of gold in gold ore and sediment were 0.6 to 3.3 % and 0.9 to 1.2 %, respectively.http://wjst.wu.ac.th/index.php/wjst/article/view/53Goldgeologicalstripping chronopotentiometry |
| spellingShingle | Nipaporn MEEPUN Suphawuth SIRIKET Saravut DEJMANEE Roongroje RATANA-OHPAS Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples Walailak Journal of Science and Technology Gold geological stripping chronopotentiometry |
| title | Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples |
| title_full | Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples |
| title_fullStr | Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples |
| title_full_unstemmed | Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples |
| title_short | Stripping Chronopotentiometry: An Alternative Method for the Determination of Gold in Geological Samples |
| title_sort | stripping chronopotentiometry an alternative method for the determination of gold in geological samples |
| topic | Gold geological stripping chronopotentiometry |
| url | http://wjst.wu.ac.th/index.php/wjst/article/view/53 |
| work_keys_str_mv | AT nipapornmeepun strippingchronopotentiometryanalternativemethodforthedeterminationofgoldingeologicalsamples AT suphawuthsiriket strippingchronopotentiometryanalternativemethodforthedeterminationofgoldingeologicalsamples AT saravutdejmanee strippingchronopotentiometryanalternativemethodforthedeterminationofgoldingeologicalsamples AT roongrojeratanaohpas strippingchronopotentiometryanalternativemethodforthedeterminationofgoldingeologicalsamples |