Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa
Deuterium (<sup>2</sup>H) and oxygen 18 (<sup>18</sup>O) stable isotopes in water are the key indicators of hydrological and ecological patterns and processes. The water isotopes δ<sup>2</sup>H and δ<sup>18</sup>O have been employed widely as tracers i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/13/20/2801 |
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| author | Joseph Mathuthu Naomi Dikeledi Mokhine Namhla Mkiva Samuel Che Nde Ingrid Dennis Johan Hendriks Lobina Palamuleni Tebogo Gilbert Kupi Manny Mathuthu |
| author_facet | Joseph Mathuthu Naomi Dikeledi Mokhine Namhla Mkiva Samuel Che Nde Ingrid Dennis Johan Hendriks Lobina Palamuleni Tebogo Gilbert Kupi Manny Mathuthu |
| author_sort | Joseph Mathuthu |
| collection | DOAJ |
| description | Deuterium (<sup>2</sup>H) and oxygen 18 (<sup>18</sup>O) stable isotopes in water are the key indicators of hydrological and ecological patterns and processes. The water isotopes δ<sup>2</sup>H and δ<sup>18</sup>O have been employed widely as tracers in hydrological and ecological research, as they are integrated into geological and biological systems in a predictable manner. The aim of this study was to determine the water isotope composition of the International Atomic Energy Agency’s (IAEA) Water Isotope Inter-laboratory Comparison (WICO) samples and to determine the Local Meteoric Water Line for North West Province (NWP) villages in South Africa. The IAEA WICO 2020 samples were obtained from the IAEA, Vienna, and borehole water samples from selected villages in the North West province of South Africa were randomly collected to investigate the relationship between the stable isotopes (<sup>18</sup>O and <sup>2</sup>H) and the climate in underground water aquifers. A cavity ring-down spectroscopy analyzer with laser-current-tuned cavity resonance, Picarro L2140-<i>i</i>, was used to measure triple water–isotope ratios with high precision. The IAEA WICO results obtained for the d-excess were in a satisfactory range and the margins of error were close to those required by the IAEA. The δ<sup>2</sup>H values ranged between −33.00‰ and −8.00‰, while the δ<sup>18</sup>O values ranged between −5.50‰ and −2.00‰. The results of this work have shown that our water science and management lab is capable of undertaking inter-laboratory comparisons for the IAEA. |
| first_indexed | 2024-03-10T06:08:06Z |
| format | Article |
| id | doaj.art-0622880de57b4212884cf6a0c22f9b9e |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-10T06:08:06Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-0622880de57b4212884cf6a0c22f9b9e2023-11-22T20:20:56ZengMDPI AGWater2073-44412021-10-011320280110.3390/w13202801Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South AfricaJoseph Mathuthu0Naomi Dikeledi Mokhine1Namhla Mkiva2Samuel Che Nde3Ingrid Dennis4Johan Hendriks5Lobina Palamuleni6Tebogo Gilbert Kupi7Manny Mathuthu8Centre for Applied Radiation Science and Technology, Mafikeng Campus, North West University, Mahikeng 2790, South AfricaCentre for Applied Radiation Science and Technology, Mafikeng Campus, North West University, Mahikeng 2790, South AfricaDepartment of Geography and Environmental Sciences, Mafikeng Campus, School of Geo and Spatial Sciences, North West University, Mahikeng 2790, South AfricaCentre for Applied Radiation Science and Technology, Mafikeng Campus, North West University, Mahikeng 2790, South AfricaCentre for Water Sciences and Management, Potchefstroom Campus, North-West University, Potchefstroom 2520, South AfricaCentre for Water Sciences and Management, Potchefstroom Campus, North-West University, Potchefstroom 2520, South AfricaDepartment of Geography and Environmental Sciences, Mafikeng Campus, School of Geo and Spatial Sciences, North West University, Mahikeng 2790, South AfricaCentre for Applied Radiation Science and Technology, Mafikeng Campus, North West University, Mahikeng 2790, South AfricaCentre for Applied Radiation Science and Technology, Mafikeng Campus, North West University, Mahikeng 2790, South AfricaDeuterium (<sup>2</sup>H) and oxygen 18 (<sup>18</sup>O) stable isotopes in water are the key indicators of hydrological and ecological patterns and processes. The water isotopes δ<sup>2</sup>H and δ<sup>18</sup>O have been employed widely as tracers in hydrological and ecological research, as they are integrated into geological and biological systems in a predictable manner. The aim of this study was to determine the water isotope composition of the International Atomic Energy Agency’s (IAEA) Water Isotope Inter-laboratory Comparison (WICO) samples and to determine the Local Meteoric Water Line for North West Province (NWP) villages in South Africa. The IAEA WICO 2020 samples were obtained from the IAEA, Vienna, and borehole water samples from selected villages in the North West province of South Africa were randomly collected to investigate the relationship between the stable isotopes (<sup>18</sup>O and <sup>2</sup>H) and the climate in underground water aquifers. A cavity ring-down spectroscopy analyzer with laser-current-tuned cavity resonance, Picarro L2140-<i>i</i>, was used to measure triple water–isotope ratios with high precision. The IAEA WICO results obtained for the d-excess were in a satisfactory range and the margins of error were close to those required by the IAEA. The δ<sup>2</sup>H values ranged between −33.00‰ and −8.00‰, while the δ<sup>18</sup>O values ranged between −5.50‰ and −2.00‰. The results of this work have shown that our water science and management lab is capable of undertaking inter-laboratory comparisons for the IAEA.https://www.mdpi.com/2073-4441/13/20/2801water isotope compositionsdeuterium-excessLocal Meteorological Water Line |
| spellingShingle | Joseph Mathuthu Naomi Dikeledi Mokhine Namhla Mkiva Samuel Che Nde Ingrid Dennis Johan Hendriks Lobina Palamuleni Tebogo Gilbert Kupi Manny Mathuthu Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa Water water isotope compositions deuterium-excess Local Meteorological Water Line |
| title | Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa |
| title_full | Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa |
| title_fullStr | Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa |
| title_full_unstemmed | Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa |
| title_short | Determining Water Isotope Compositions for the IAEA WICO and North West Villages, South Africa |
| title_sort | determining water isotope compositions for the iaea wico and north west villages south africa |
| topic | water isotope compositions deuterium-excess Local Meteorological Water Line |
| url | https://www.mdpi.com/2073-4441/13/20/2801 |
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