| Full text | |
| Author(s): |
Biamont-Rojas, Ivan Edward
;
Cardoso-Silva, Sheila
;
Lopes Figueira, Rubens Cesar
;
Mi Kim, Bianca Sung
;
Alfaro-Tapia, Rene
;
Pompeo, Marcelo
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Science of The Total Environment; v. 871, p. 12-pg., 2023-05-01. |
| Abstract | |
Spatial distribution and interpolation methods provide a summarized overview about the pollution dispersion, concerning the environment's quality. A high-altitude lake was taken as a model to assess the metalloid As and metals Cr, Cu, Ni, Pb, Zn distribution in superficial sediment and classify them according to their ecotoxicological potential in the aquatic environment. Surface sediments were collected from 11 sites along Puno Bay located at the western area of Lake Titicaca, Peru, and analyzed for pseudo total-metals. Sediment concentration data and quality were plotted using the Inverse Distance Weighting (IDW) as an interpolation method. High concentrations of As were found especially in the outer bay (81.73 mg.kg-1). Spatial heterogeneity was evidenced for metal by the coefficient of variation, although no significative differences were observed between the two bays applying a Kruskall Wallis test (p < 0.05, df = 1). Sediment quality classification showed that most metal values were below TEL and toxicity was unlikely to occur, only As exceeded threefold PEL values, which categorized sediment as "Very Bad", indicating a rather high ecotoxicological potential to the aquatic environment. In conclusion, spatial analysis connected to interpolation methods demonstrated the superficial sediment heterogeneity in Puno Bay. (AU) | |
| FAPESP's process: | 16/24528-2 - Metals in sediments of São Paulo State reservoirs: subsidy to decision making through geostatistical and ecotoxicological approaches |
| Grantee: | Marcelo Luiz Martins Pompêo |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 19/10845-4 - Water quality of São Paulo reservoirs: the weight of evidence |
| Grantee: | Marcelo Luiz Martins Pompêo |
| Support Opportunities: | Regular Research Grants |