Chemical speciation and bioavailability of lead and cadmium in an aquatic system polluted by sewage discharges
| Autor: | Rajkamal Sarin, Vaidyanathan N. Iyer |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Cadmium
geography Chemical Health and Safety geography.geographical_feature_category Perennial stream business.industry Health Toxicology and Mutagenesis media_common.quotation_subject chemistry.chemical_element Sewage Particulates Toxicology Bioavailability Anodic stripping voltammetry Speciation chemistry Environmental chemistry business Effluent media_common |
| Zdroj: | Chemical Speciation & Bioavailability. 4:135-142 |
| ISSN: | 2047-6523 0954-2299 |
| DOI: | 10.1080/09542299.1992.11083192 |
| Popis: | A physico-chemical scheme encompassing anodic stripping voltammetry (ASV) as an analytical tool, and ultraviolet irradiation techniques, has been applied to determine the species of lead and cadmium in sewage polluted and unpolluted fresh-waters of a major perennial river located downstream of a metropolitan city in India. The physico-chemical and bioavailable species that have been identified and quantified include ASV-labile (bioavailable), particulate bound, total dissolved, non-labile or bound and organically bound metal. For precise and rapid assessment of the toxic bioavailable fraction, the ASV technique has been proposed as an analytical tool.The river stretch, divided into reference, impact and recovery zones, has been monitored for any alteration in the distribution and partitioning of Pb and Cd amongst various physico-chemical forms. An attempt has been made to assess the impact of effluent discharge upon the receiving river by correlating concentrations of various metal-species with re... |
| Databáze: | OpenAIRE |
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