| Content Provider |
World Health Organization (WHO)-Global Index Medicus |
| Author |
Dubar, Michel Simler, Roland Durrieu, Gaël Féraud, Gilbert Barats, Aurélie Potot, Cécile Philippini, Violaine Travi, Yves |
| Spatial Coverage |
France |
| Description |
Author Affiliation: Barats A ( Université de Nice Sophia-Antipolis, Institut de Chimie de Nice, UMR CNRS 7272, 28 avenue de Valrose, 06108 Nice Cedex 2, France. Electronic address: aurelie.barats@unice.fr.); Féraud G ( Université de Nice Sophia-Antipolis, Institut de Chimie de Nice, UMR CNRS 7272, 28 avenue de Valrose, 06108 Nice Cedex 2, France.); Potot C ( Université de Nice Sophia-Antipolis, Institut de Chimie de Nice, UMR CNRS 7272, 28 avenue de Valrose, 06108 Nice Cedex 2, France.); Philippini V ( Université de Nice Sophia-Antipolis, Institut de Chimie de Nice, UMR CNRS 7272, 28 avenue de Valrose, 06108 Nice Cedex 2, France.); Travi Y ( Université d'Avignon et des Pays du Vaucluse, EMMAH, UMR UAPV/INRA 1114, 33 rue Louis Pasteur, 84000 Avignon, France.); Durrieu G ( Université de Toulon, PROTEE, EA 3819, 83957 La Garde, France.); Dubar M ( Université de Nice Sophia-Antipolis, CEPAM, UMR CNRS 7264, 24 avenue des Diables Bleus, 06357 Nice Cedex 4, France.); Simler R ( Université d'Avignon et des Pays du Vaucluse, EMMAH, UMR UAPV/INRA 1114, 33 rue Louis Pasteur, 84000 Avignon, France.) |
| Abstract |
A detailed study on arsenic (As) in rocks and water from the Var River watershed was undertaken aiming at identifying (i) the origin and the distribution of As in this typical Alpine/Mediterranean basin, and (ii) As input into the Mediterranean Sea. Dissolved As concentrations in the Var River range from 0.1 to 4.5 µgâ L(-1), due to high hydrological variability and the draining through different geological formations. In the upper part of the Var drainage basin, in the Tinée and the Vésubie valleys, high levels of dissolved As concentrations occur (up to 263 µgâ L(-1)). The two main sources of As in rocks are the Hercynian metamorphic rocks and the Permian argilites. Highly heterogeneous distribution of As in waters draining through metamorphic rocks is probably related to ore deposits containing arsenopyrite. As, U, W and Mo concentrations in water and rocks correspond to the formation of As-rich ore deposits around Argentera granite by hydrothermal fluids deposited at the end of the Hercynian chain formation, which occurred about 300 My ago. In 2009, weekly monitoring was performed on the Var River (15 km upstream of the mouth), highlighting an average dissolved As concentration (<0.45 µm) of 2.7 ± 0.9 µgâ L(-1), which is significantly higher than the world-average baseline for river water (0.83 µgâ L(-1)). Taking the average annual discharge (49.4 m(3)â s(-1)) into account and the As levels in the dissolved phase and in deposits of the Var River, dissolved As input into the Mediterranean Sea would be 4. 2± 1.4 tonsâ year(-1) which represents 59% of the total As flux. This study also reveals a probable non-conservative As behaviour, i.e., possible transfer between aqueous and solid phases, during the mixing of the Var River with a tributary. |
| ISSN |
00489697 |
| Volume Number |
473-474 |
| e-ISSN |
18791026 |
| Journal |
Science of The Total Environment |
| Language |
English |
| Publisher |
Elsevier |
| Publisher Date |
2014-03-01 |
| Publisher Place |
Netherlands |
| Access Restriction |
One Nation One Subscription (ONOS) |
| Subject Keyword |
Arsenic Analysis Environmental Monitoring Rivers Chemistry Water Pollutants, Chemical France Geologic Sediments Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type |
Text |
| Resource Type |
Article |
| Subject |
Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
