Bioavailability of metals in soils irrigated by synthetic wastewater
In Lebanon, Bekaa valley is an agricultural zone; during the dry season, water is withdrawn from Litani River for irrigation which is mostly domestic and industrial waste water. Metal mobility, bioavailability, or potential risks can be anticipated by metal speciation in soil and water. The objectiv...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | article |
| Published: |
2017
|
| Online Access: | http://hdl.handle.net/10725/8254 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.ewra.net/ew/pdf/EW_2017_58_47.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1864513484244385792 |
|---|---|
| author | Korfali, S.I. |
| author2 | Karaki, H. |
| author2_role | author |
| author_facet | Korfali, S.I. Karaki, H. |
| author_role | author |
| dc.creator.none.fl_str_mv | Korfali, S.I. Karaki, H. |
| dc.date.none.fl_str_mv | 2017 2018-08-01T08:03:52Z 2018-08-01T08:03:52Z 2018-08-01 |
| dc.identifier.none.fl_str_mv | 1792-085X http://hdl.handle.net/10725/8254 Korfali, S. I., & Karaki, H. (2017). Bioavailability of metals in soils irrigated by synthetic wastewater: Metal speciation. http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.ewra.net/ew/pdf/EW_2017_58_47.pdf |
| dc.language.none.fl_str_mv | en |
| dc.relation.none.fl_str_mv | European Water |
| dc.rights.*.fl_str_mv | info:eu-repo/semantics/openAccess |
| dc.title.none.fl_str_mv | Bioavailability of metals in soils irrigated by synthetic wastewater metal speciation |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | In Lebanon, Bekaa valley is an agricultural zone; during the dry season, water is withdrawn from Litani River for irrigation which is mostly domestic and industrial waste water. Metal mobility, bioavailability, or potential risks can be anticipated by metal speciation in soil and water. The objective of this study was to investigate the speciation of metals in soil and water of upper Litani basin. Soils samples were subjected to a modified BCR sequential extraction technique that operationally extracts metals as acid soluble, reducible, oxidizing, and residual fraction. Metal content in each fraction and total metal in water were determined by AAS and ICP-MS techniques. Sediment pH, Eh and TOC and macro water parameter were determined. Speciation of metals in water was predicted PHREEQC geochemical computer model. Results indicated in non-residual fraction respectively highest average % of total metal are in reducible and acid soluble (Mn: 27 %, 18; Zn: 18 %; Cr: 27%, 34%; As: 28% , 20%); in oxidizing and acid soluble (Cu: 25%, 10%; Ni: 24%, 33%; Cd: 16%, 23%, Hg: 23;%, 12%). Metal speciation variations among sites were related to the levels of TOC and Eh and water BOD. The ICF values indicate a considerable contamination for As, Cd, Cr, Ni; and GCF indicated 50 % of sites of considerable contamination. Speciation in water predicted existence of the toxic free aqua ion (Mn: 6-97%; Zn: 35-89%; Ni: 60-90%; Cd: 35-82%). These and soil GCF values reflect the high degree of metal bioavailability, toxicity, and potential risk. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | LAURepo_25186aad2f9dd19bb6240b1fa355c8b5 |
| identifier_str_mv | 1792-085X Korfali, S. I., & Karaki, H. (2017). Bioavailability of metals in soils irrigated by synthetic wastewater: Metal speciation. |
| language_invalid_str_mv | en |
| network_acronym_str | LAURepo |
| network_name_str | Lebanese American University repository |
| oai_identifier_str | oai:laur.lau.edu.lb:10725/8254 |
| publishDate | 2017 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Bioavailability of metals in soils irrigated by synthetic wastewatermetal speciationKorfali, S.I.Karaki, H.In Lebanon, Bekaa valley is an agricultural zone; during the dry season, water is withdrawn from Litani River for irrigation which is mostly domestic and industrial waste water. Metal mobility, bioavailability, or potential risks can be anticipated by metal speciation in soil and water. The objective of this study was to investigate the speciation of metals in soil and water of upper Litani basin. Soils samples were subjected to a modified BCR sequential extraction technique that operationally extracts metals as acid soluble, reducible, oxidizing, and residual fraction. Metal content in each fraction and total metal in water were determined by AAS and ICP-MS techniques. Sediment pH, Eh and TOC and macro water parameter were determined. Speciation of metals in water was predicted PHREEQC geochemical computer model. Results indicated in non-residual fraction respectively highest average % of total metal are in reducible and acid soluble (Mn: 27 %, 18; Zn: 18 %; Cr: 27%, 34%; As: 28% , 20%); in oxidizing and acid soluble (Cu: 25%, 10%; Ni: 24%, 33%; Cd: 16%, 23%, Hg: 23;%, 12%). Metal speciation variations among sites were related to the levels of TOC and Eh and water BOD. The ICF values indicate a considerable contamination for As, Cd, Cr, Ni; and GCF indicated 50 % of sites of considerable contamination. Speciation in water predicted existence of the toxic free aqua ion (Mn: 6-97%; Zn: 35-89%; Ni: 60-90%; Cd: 35-82%). These and soil GCF values reflect the high degree of metal bioavailability, toxicity, and potential risk.PublishedN/A2018-08-01T08:03:52Z2018-08-01T08:03:52Z20172018-08-01Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1792-085Xhttp://hdl.handle.net/10725/8254Korfali, S. I., & Karaki, H. (2017). Bioavailability of metals in soils irrigated by synthetic wastewater: Metal speciation.http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.phphttps://www.ewra.net/ew/pdf/EW_2017_58_47.pdfenEuropean Waterinfo:eu-repo/semantics/openAccessoai:laur.lau.edu.lb:10725/82542021-03-19T10:43:16Z |
| spellingShingle | Bioavailability of metals in soils irrigated by synthetic wastewater Korfali, S.I. |
| status_str | publishedVersion |
| title | Bioavailability of metals in soils irrigated by synthetic wastewater |
| title_full | Bioavailability of metals in soils irrigated by synthetic wastewater |
| title_fullStr | Bioavailability of metals in soils irrigated by synthetic wastewater |
| title_full_unstemmed | Bioavailability of metals in soils irrigated by synthetic wastewater |
| title_short | Bioavailability of metals in soils irrigated by synthetic wastewater |
| title_sort | Bioavailability of metals in soils irrigated by synthetic wastewater |
| url | http://hdl.handle.net/10725/8254 http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php https://www.ewra.net/ew/pdf/EW_2017_58_47.pdf |