دورية أكاديمية
Dissolution kinetics of heavy metals in Dutch carbonate- and sulfide-rich freshwater sediments.
| العنوان: | Dissolution kinetics of heavy metals in Dutch carbonate- and sulfide-rich freshwater sediments. |
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| المؤلفون: | Buykx SE; National Institute of Public Health and the Environment, Bilthoven, The Netherlands. susan.buykx@rivm.nl, van den Hoop MA, Loch JP |
| المصدر: | Journal of environmental quality [J Environ Qual] 2002 Mar-Apr; Vol. 31 (2), pp. 573-80. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Country of Publication: United States NLM ID: 0330666 Publication Model: Print Cited Medium: Print ISSN: 0047-2425 (Print) Linking ISSN: 00472425 NLM ISO Abbreviation: J Environ Qual Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2020- : [Hoboken, NJ] : Wiley Original Publication: Madison, WI : Published cooperatively by American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
| مواضيع طبية MeSH: | Geologic Sediments/*chemistry , Metals, Heavy/*chemistry , Water Pollutants/*analysis, Carbonates/chemistry ; Environmental Monitoring ; Hydrogen-Ion Concentration ; Kinetics ; Risk Assessment ; Solubility ; Sulfides/chemistry ; Volatilization |
| مستخلص: | In two sulfide-rich freshwater sediments from the Biesbosch and Kromme Rijn River in the Netherlands differing in carbonate content and acid volatile sulfide (AVS) content, metal and sulfide dissolution kinetics were studied at different acid concentrations by varying both the procedure of acid addition and the extraction time. The establishment of equilibrium was monitored by measuring the pH in time, which reached a near constant value. The equilibrium pH was reached quickly when large amounts of acid were added and slowly when small amounts of acid were added. This observation was confirmed by the yield of extracted metals after either a 45-min or 24-h extraction over a pH range from 0 to 5. The pH factor seemed to be of more influence than time for the dissolution of metals. The amount of extracted metals was highly dependent on the metal itself due to its physico-chemical behavior. Although the sediments studied varied in carbonate content, acid volatile sulfide (AVS), and total metal content, the extracted fraction of metals compared with their total content in the sediment was similar for most metals. Finally, the AVS content as well as the ratio of simultaneously extracted metals (SEM; sum of Cd, Cu, Ni, Pb, and Zn) to AVS decreased with increasing pH. Because the SEM to AVS ratio may be used to set environmental quality criteria for the sediment compartment, this observation is of significance. |
| المشرفين على المادة: | 0 (Carbonates) 0 (Metals, Heavy) 0 (Sulfides) 0 (Water Pollutants) |
| تواريخ الأحداث: | Date Created: 20020405 Date Completed: 20020910 Latest Revision: 20021121 |
| رمز التحديث: | 20231215 |
| PMID: | 11931449 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0047-2425 |
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