The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Enhanced Dissolution of Cinnabar (Mercuric Sulfide) by Dissolved Organic Matter Isolated from the Florida Everglades
Abstract
Organic matter isolated from the Florida Everglades caused a dramatic increase in mercury release (up to 35 μM total dissolved mercury) from cinnabar (HgS), a solid with limited solubility. Hydrophobic (a mixture of both humic and fulvic) acids dissolved more mercury than hydrophilic acids and other nonacid fractions of dissolved organic matter (DOM). Cinnabar dissolution by isolated organic matter and natural water samples was inhibited by cations such as Ca 2+ . Dissolution was independent of oxygen content in experimental solutions. Dissolution experiments conducted in DI water (pH = 6.0) had no detectable (<2.5 nM) dissolved mercury. The presence of various inorganic (chloride, sulfate, or sulfide) and organic ligands (salicylic acid, acetic acid, EDTA, or cysteine) did not enhance the dissolution of mercury from the mineral. Aromatic carbon content in the isolates (determined by 13 C NMR) correlated positively with enhanced cinnabar dissolution. ζ-potential measurements indicated sorption of negatively charged organic matter to the negatively charged cinnabar (pH pzc = 4.0) at pH 6.0. Possible mechanisms of dissolution include surface complexation of mercury and oxidation of surface sulfur species by the organic matter.
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Citations
Cites
Humic substances as electron acceptors for microbial respiration
Lovley, D. R., Coates, J. D., Blunt-Harris, E. L., Phillips, E. J. P., & Woodward, J. C. (1996) · Nature · doi:10.1038/382445a0 · Cited by 1,834
McKnight, D. M., Bencala, K. E., Zellweger, G. W., Aiken, G. R., Feder, G. L., & Thorn, K. A. (1992) · Environmental Science & Technology · doi:10.1021/es00031a017 · Cited by 405
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Interactions between mercury and dissolved organic matter––a review
Ravichandran, M. (2004) · Chemosphere · doi:10.1016/j.chemosphere.2003.11.011 · Cited by 1,254
Self-citationWiener, J., Krabbenhoft, D., Heinz, G., & Scheuhammer, A. (2002) · Handbook of Ecotoxicology, Second Edition · doi:10.1201/9781420032505.ch16 · Cited by 656
Haitzer, M., Aiken, G. R., & Ryan, J. N. (2002) · Environmental Science & Technology · doi:10.1021/es025699i · Cited by 434
Self-citationGoldstone, J. V., Pullin, M. J., Bertilsson, S., & Voelker, B. M. (2002) · Environmental Science & Technology · doi:10.1021/es0109646 · Cited by 318
Selenium and mercury in organisms: Interactions and mechanisms
Yang, D.-Y., Chen, Y.-W., Gunn, J. M., & Belzile, N. (2008) · Environmental Reviews · doi:10.1139/a08-001 · Cited by 304
Metadata
- Authors
- Ravichandran, M., Aiken, G. R., Reddy, M. M., & Ryan, J. N.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 1998-09-04
- Volume
- 32
- Issue
- 21
- Pages
- 3305-3311
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2054298223
- Cited by
- 234
- References
- 2
- FWCI
- 5.14
- Type
- journal article
- Language
- en
- Open access
- closed
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