Production of organic mercury from Hg0: experiments using microcosms
Transformation of inorganic to organic mercury is a process known to occur in the water column as well as in sediment. However, little is known about the fate of metallic mercury in tropical environments. In this work the production of organic mercury in water and sediment under aerobic and anaerobi...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2003-01-01
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| Series: | Journal of the Brazilian Chemical Society |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000200009 |
| _version_ | 1818216190477074432 |
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| author | Bisinoti Márcia Cristina Jardim Wilson F. |
| author_facet | Bisinoti Márcia Cristina Jardim Wilson F. |
| author_sort | Bisinoti Márcia Cristina |
| collection | DOAJ |
| description | Transformation of inorganic to organic mercury is a process known to occur in the water column as well as in sediment. However, little is known about the fate of metallic mercury in tropical environments. In this work the production of organic mercury in water and sediment under aerobic and anaerobic conditions was demonstrated in a microcosm setup using a 6:1 water: dry sediment ratio, after a spike of 0.1% (w/w) of Hg0. The rate of production of organic mercury in sediment was higher under anaerobic conditions (617 mug kg-1 day-1) than that obtained under aerobic conditions (280 mug kg-1 day-1). An attempt to evaluate the production of organic mercury in abiotic conditions was not possible due to drastic changes in the microcosm during sterilization when compared to the experimental conditions maintained under biotic conditions. It was concluded that metallic mercury, which enters the environment mainly due to gold-mining activities, undergoes a reactive dissolution in the aquatic medium, thus becoming a suitable substrate for the production of organic mercury in tropical environments. |
| first_indexed | 2024-12-12T06:48:02Z |
| format | Article |
| id | doaj.art-e4899c64e8d0407f82fe7ab8557c54ca |
| institution | Directory Open Access Journal |
| issn | 0103-5053 |
| language | English |
| last_indexed | 2024-12-12T06:48:02Z |
| publishDate | 2003-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Journal of the Brazilian Chemical Society |
| spelling | doaj.art-e4899c64e8d0407f82fe7ab8557c54ca2022-12-22T00:34:07ZengSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society0103-50532003-01-01142244248Production of organic mercury from Hg0: experiments using microcosmsBisinoti Márcia CristinaJardim Wilson F.Transformation of inorganic to organic mercury is a process known to occur in the water column as well as in sediment. However, little is known about the fate of metallic mercury in tropical environments. In this work the production of organic mercury in water and sediment under aerobic and anaerobic conditions was demonstrated in a microcosm setup using a 6:1 water: dry sediment ratio, after a spike of 0.1% (w/w) of Hg0. The rate of production of organic mercury in sediment was higher under anaerobic conditions (617 mug kg-1 day-1) than that obtained under aerobic conditions (280 mug kg-1 day-1). An attempt to evaluate the production of organic mercury in abiotic conditions was not possible due to drastic changes in the microcosm during sterilization when compared to the experimental conditions maintained under biotic conditions. It was concluded that metallic mercury, which enters the environment mainly due to gold-mining activities, undergoes a reactive dissolution in the aquatic medium, thus becoming a suitable substrate for the production of organic mercury in tropical environments.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000200009organic and reactive mercurydissolved organic carbonmicrocosmmetallic mercury |
| spellingShingle | Bisinoti Márcia Cristina Jardim Wilson F. Production of organic mercury from Hg0: experiments using microcosms Journal of the Brazilian Chemical Society organic and reactive mercury dissolved organic carbon microcosm metallic mercury |
| title | Production of organic mercury from Hg0: experiments using microcosms |
| title_full | Production of organic mercury from Hg0: experiments using microcosms |
| title_fullStr | Production of organic mercury from Hg0: experiments using microcosms |
| title_full_unstemmed | Production of organic mercury from Hg0: experiments using microcosms |
| title_short | Production of organic mercury from Hg0: experiments using microcosms |
| title_sort | production of organic mercury from hg0 experiments using microcosms |
| topic | organic and reactive mercury dissolved organic carbon microcosm metallic mercury |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532003000200009 |
| work_keys_str_mv | AT bisinotimarciacristina productionoforganicmercuryfromhg0experimentsusingmicrocosms AT jardimwilsonf productionoforganicmercuryfromhg0experimentsusingmicrocosms |