| Acid volatile sulfide and simultaneously extracted metals in the sediment cores of the Pearl River Estuary, South China. | |
| | |
MedLine Citation:
|
PMID: 15922809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The acid-volatile sulfide (AVS), simultaneously extracted metals (SEM), total metals, and chemical partitioning in the sediment cores of the Pearl River Estuary (PRE) were studied. The concentrations of total metals, AVS, and SEM in the sediment cores were generally low in the river outlet area, increased along the seaward direction, and decreased again at the seaward boundary of the estuary. The amounts of AVS were generally greater in deeper sediments than in surface sediments. SEM/AVS was >1 in the surface sediments and in the river outlet cores. The ratio was <1 in the sediments down the profiles, suggesting that AVS might play a major role in binding heavy metals in the deep sediments of the PRE. The SEM may contain different chemical forms of trace metals in the sediments, depending on the metal reaction with 1M cold HCl in the AVS procedure compared with the results of the sequential chemical extraction. The SEM/AVS ratio prediction may overestimate trace metal availability even in the sediments with high AVS concentrations. |
| | |
Authors:
|
Tao Fang; Xiangdong Li; Gan Zhang |
Related Documents
:
|
20303629 - Recent 137cs deposition in sediments of admiralty bay, antarctica. 20417309 - Comparison of in vitro and in situ genotoxicity in the danube river by means of the com... 17787809 - Azaarenes in recent marine sediments. 18550149 - The effects of land use on fluvial sediment chemistry for the conterminous u.s. - resul... 17819039 - Geomorphology and sediment stability of a segment of the u.s. continental slope off new... 20023079 - Archaeal diversity and distribution along thermal and geochemical gradients in hydrothe... 15117069 - Determination of benzene, toluene, ethylbenzene and xylenes in soils by multiple headsp... 20615339 - Soil versus pond ash surfacing of feedlot pens: occurrence of escherichia coli o157:h7 ... 15746359 - In vivo monitoring of obligate biotrophic pathogen growth by kinetic pcr. |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2004-12-07 |
Journal Detail:
|
Title: Ecotoxicology and environmental safety Volume: 61 ISSN: 0147-6513 ISO Abbreviation: Ecotoxicol. Environ. Saf. Publication Date: 2005 Jul |
Date Detail:
|
Created Date: 2005-05-30 Completed Date: 2005-10-04 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 7805381 Medline TA: Ecotoxicol Environ Saf Country: United States |
Other Details:
|
Languages: eng Pagination: 420-31 Citation Subset: IM |
Affiliation:
|
Department of Civil and Structural Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Biological Availability China Environmental Monitoring Geologic Sediments / chemistry* Metals, Heavy / analysis*, isolation & purification* Rivers Sulfides / analysis*, isolation & purification* Volatilization |
| Chemical | |
Reg. No./Substance:
|
0/Metals, Heavy; 0/Sulfides |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Acute toxicity of widely used pharmaceuticals in aquatic species: Gambusia holbrooki, Artemia parthe...
Next Document: Acute toxicity of trivalent thallium compounds to Daphnia magna.