Environmental condition of sediment in the eastern sector of Cariaco Gulf
में बचाया:
| लेखक: | |
|---|---|
| स्वरूप: | artículo original |
| स्थिति: | Versión publicada |
| प्रकाशन तिथि: | 2021 |
| विवरण: | In 2008, the environmental status of sediment in the eastern region of the Gulf of Cariaco (Venezuela) was evaluated by comparing chemical concentrations of trace metals and polycyclic aromatic hydrocarbons (PAHs) to responses to standardized toxicological tests. In April, the metals partitioned in the sediment and retained water were extracted and measured using ICP-OES analysis. The PAHs were separated from the sediment using ultrasound and measured with HPLC-fluorescence detectors. In addition, Artemia survival was evaluated and hemolytic activity tests were performed. The total metal concentrations (μg g-1) were: Cu (29-91), Cd (1.9-4.9), Cr (4-36), Ni (10-33), Pb (3-9) and Zn (32-112). Results of the analysis of water (µg L-1) were Pb (33-56), Cr and (154-237). The concentrations of PAHs (3-5 rings) were low, with a predominance of fluoranthene (22-71 ng g-1), mainly pyrolytic. Concentrations of Cu, Ni and Cd in the sediment exceeded quality criteria in only a few locations. There was no mortality of larvae during toxicological tests and hemolytic activity was less than 2%. These results show that the sediments analyzed have high ecological quality |
| देश: | Portal de Revistas UNA |
| संस्थान: | Universidad Nacional de Costa Rica |
| Repositorio: | Portal de Revistas UNA |
| भाषा: | Español |
| OAI Identifier: | oai:www.revistas.una.ac.cr:article/15466 |
| ऑनलाइन पहुंच: | https://www.revistas.una.ac.cr/index.php/revmar/article/view/15466 |
| संकेत शब्द: | Sediment water toxins environmental risk Venezuela Agua riesgo ambiental sedimento tóxicos Água risco ambiental |