Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina
The composition of river water, sediments, and pore waters (down to 30 cm below the bed) of Las Catonas Stream was studied to analyze the distribution of trace elements in a peri-urban site. The Las Catonas Stream is one of the main tributaries of Reconquista River, a highly polluted water course in...
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paper:paper_18666280_v77_n14_p_Cantera2023-06-08T16:29:46Z Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina Clay minerals Geochemistry Heavy metals Partitioning coefficient Clay minerals Geochemistry Heavy metals Kaolinite Mesoporous materials Organic carbon River pollution Surficial sediments Trace elements Urban growth Water Clay-sized fractions Desorption isotherms Distribution coefficient Fine-grained sediment Macroporous materials Partitioning coefficients Quaternary sediments Total Organic Carbon Rivers clay mineral concentration (composition) fine grained sediment heavy metal mobility partition coefficient periurban area porewater river water sediment pollution surface water total organic carbon trace element tributary water pollution Argentina Buenos Aires [Argentina] Reconquista River The composition of river water, sediments, and pore waters (down to 30 cm below the bed) of Las Catonas Stream was studied to analyze the distribution of trace elements in a peri-urban site. The Las Catonas Stream is one of the main tributaries of Reconquista River, a highly polluted water course in the Buenos Aires Province, Argentina. The semi-consolidated Quaternary sediments of the Luján Formation are the main source of sediments for Las Catonas Stream. The coarse-grained fraction in the sediments is mainly composed of tosca (calcretes), intraclasts, bone fragments, glass shards, quartz, and aggregates of fine-grained sediments together with considerably amounts of vegetal remains. The clay minerals are illite, illite–smectite, smectite, and kaolinite. For the clay-sized fraction, the external surface area values are mostly between 70 and 110 m2g−1, although the fraction at 15 cm below the bottom of the river shows a lower surface area of 12 m2g−1. The N2 adsorption–desorption isotherms at 77 K for this sample display a behavior indicative of non-porous or macroporous material, whereas the samples above and below present a typical behavior of mesoporous materials with pores between parallel plates (slit-shaped). As, Cr, Cu, and Cd concentrations increase down to 15 cm depth in the sediments, where the highest trace element and total organic carbon (TOC) concentrations were found, and then decrease toward the bottom of the core. Except for As, the levels of the other heavy metals show higher concentration in surficial waters than in pore waters. Distribution coefficients between the sediments, pore water, and surficial water phases indicate that As is released from the sediments to the pore and surficial waters. Cu content strongly correlates with TOC (mainly from vegetal remains), suggesting that this element is mainly bound to the organic phase. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18666280_v77_n14_p_Cantera http://hdl.handle.net/20.500.12110/paper_18666280_v77_n14_p_Cantera |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Clay minerals Geochemistry Heavy metals Partitioning coefficient Clay minerals Geochemistry Heavy metals Kaolinite Mesoporous materials Organic carbon River pollution Surficial sediments Trace elements Urban growth Water Clay-sized fractions Desorption isotherms Distribution coefficient Fine-grained sediment Macroporous materials Partitioning coefficients Quaternary sediments Total Organic Carbon Rivers clay mineral concentration (composition) fine grained sediment heavy metal mobility partition coefficient periurban area porewater river water sediment pollution surface water total organic carbon trace element tributary water pollution Argentina Buenos Aires [Argentina] Reconquista River |
| spellingShingle |
Clay minerals Geochemistry Heavy metals Partitioning coefficient Clay minerals Geochemistry Heavy metals Kaolinite Mesoporous materials Organic carbon River pollution Surficial sediments Trace elements Urban growth Water Clay-sized fractions Desorption isotherms Distribution coefficient Fine-grained sediment Macroporous materials Partitioning coefficients Quaternary sediments Total Organic Carbon Rivers clay mineral concentration (composition) fine grained sediment heavy metal mobility partition coefficient periurban area porewater river water sediment pollution surface water total organic carbon trace element tributary water pollution Argentina Buenos Aires [Argentina] Reconquista River Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina |
| topic_facet |
Clay minerals Geochemistry Heavy metals Partitioning coefficient Clay minerals Geochemistry Heavy metals Kaolinite Mesoporous materials Organic carbon River pollution Surficial sediments Trace elements Urban growth Water Clay-sized fractions Desorption isotherms Distribution coefficient Fine-grained sediment Macroporous materials Partitioning coefficients Quaternary sediments Total Organic Carbon Rivers clay mineral concentration (composition) fine grained sediment heavy metal mobility partition coefficient periurban area porewater river water sediment pollution surface water total organic carbon trace element tributary water pollution Argentina Buenos Aires [Argentina] Reconquista River |
| description |
The composition of river water, sediments, and pore waters (down to 30 cm below the bed) of Las Catonas Stream was studied to analyze the distribution of trace elements in a peri-urban site. The Las Catonas Stream is one of the main tributaries of Reconquista River, a highly polluted water course in the Buenos Aires Province, Argentina. The semi-consolidated Quaternary sediments of the Luján Formation are the main source of sediments for Las Catonas Stream. The coarse-grained fraction in the sediments is mainly composed of tosca (calcretes), intraclasts, bone fragments, glass shards, quartz, and aggregates of fine-grained sediments together with considerably amounts of vegetal remains. The clay minerals are illite, illite–smectite, smectite, and kaolinite. For the clay-sized fraction, the external surface area values are mostly between 70 and 110 m2g−1, although the fraction at 15 cm below the bottom of the river shows a lower surface area of 12 m2g−1. The N2 adsorption–desorption isotherms at 77 K for this sample display a behavior indicative of non-porous or macroporous material, whereas the samples above and below present a typical behavior of mesoporous materials with pores between parallel plates (slit-shaped). As, Cr, Cu, and Cd concentrations increase down to 15 cm depth in the sediments, where the highest trace element and total organic carbon (TOC) concentrations were found, and then decrease toward the bottom of the core. Except for As, the levels of the other heavy metals show higher concentration in surficial waters than in pore waters. Distribution coefficients between the sediments, pore water, and surficial water phases indicate that As is released from the sediments to the pore and surficial waters. Cu content strongly correlates with TOC (mainly from vegetal remains), suggesting that this element is mainly bound to the organic phase. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. |
| title |
Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina |
| title_short |
Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina |
| title_full |
Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina |
| title_fullStr |
Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina |
| title_full_unstemmed |
Mobility of trace elements between the river water, the sediments, and the pore water of Las Catonas Stream, Buenos Aires Province, Argentina |
| title_sort |
mobility of trace elements between the river water, the sediments, and the pore water of las catonas stream, buenos aires province, argentina |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_18666280_v77_n14_p_Cantera http://hdl.handle.net/20.500.12110/paper_18666280_v77_n14_p_Cantera |
| _version_ |
1768544058883440640 |