Coupling of methyl and total mercury in a minerotrophic peat bog in southeastern Sweden
(2004) In Canadian Journal of Fisheries and Aquatic Sciences 61(10). p.2014-2023- Abstract
- During most of an annual cycle, we studied the temporal variation of total mercury (Hg-T) and methyl mercury (MeHg) in unfiltered and filtered (0.45 mu) peat water from a minerotrophic peat bog in southeastern Sweden. MeHg in bulk water ([MeHgT]) and total Hg in filtered water in discharge water from the peat bog ([Hg-D]) were an order of magnitude higher than in upland runoff water entering the peat bog. At the discharge end, peat-water [Hg-D] and [MeHgD] ranged from 8 to 54 pmol.L-1 and from 1 to 32 pmol.L-1, respectively. Whereas the variation of [MeHgT] was explained by changes in [MeHgD], the variation of inorganic Hg-T [IHgT] = [Hg-T] - [MeHgT] was explained by changes in particle-bound IHg [IHgP] = [IHgT] - [IHgD]. Filterable... (More)
- During most of an annual cycle, we studied the temporal variation of total mercury (Hg-T) and methyl mercury (MeHg) in unfiltered and filtered (0.45 mu) peat water from a minerotrophic peat bog in southeastern Sweden. MeHg in bulk water ([MeHgT]) and total Hg in filtered water in discharge water from the peat bog ([Hg-D]) were an order of magnitude higher than in upland runoff water entering the peat bog. At the discharge end, peat-water [Hg-D] and [MeHgD] ranged from 8 to 54 pmol.L-1 and from 1 to 32 pmol.L-1, respectively. Whereas the variation of [MeHgT] was explained by changes in [MeHgD], the variation of inorganic Hg-T [IHgT] = [Hg-T] - [MeHgT] was explained by changes in particle-bound IHg [IHgP] = [IHgT] - [IHgD]. Filterable organic matter and sulfide in the water both correlated poorly with [Hg-D]. Neither did the amount of Hg-T in precipitation and upland runoff water correlate well with the estimated discharge of Hg-D from the peat bog. However, there was a strong correlation between [Hg-D] and [MeHgT] in the peat water (r = 0.96). Furthermore, a significant fraction of Hg-D was MeHg (mean 28%; range 8-60%). These results suggest that methylation increased the mobility of Hg. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/146176
- author
- Regnell, Olof LU and Hammar, T
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Canadian Journal of Fisheries and Aquatic Sciences
- volume
- 61
- issue
- 10
- pages
- 2014 - 2023
- publisher
- Canadian Science Publishing, NRC Research Press
- external identifiers
-
- wos:000226595900019
- scopus:14644406883
- ISSN
- 1205-7533
- DOI
- 10.1139/F04-143
- language
- English
- LU publication?
- yes
- id
- 3f4594eb-1091-4084-a102-274d778adc0e (old id 146176)
- alternative location
- http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_abst_e?cjfas_f04-143_61_ns_nf_cjfas10-04
- date added to LUP
- 2016-04-01 12:04:08
- date last changed
- 2022-01-26 22:18:33
@article{3f4594eb-1091-4084-a102-274d778adc0e, abstract = {{During most of an annual cycle, we studied the temporal variation of total mercury (Hg-T) and methyl mercury (MeHg) in unfiltered and filtered (0.45 mu) peat water from a minerotrophic peat bog in southeastern Sweden. MeHg in bulk water ([MeHgT]) and total Hg in filtered water in discharge water from the peat bog ([Hg-D]) were an order of magnitude higher than in upland runoff water entering the peat bog. At the discharge end, peat-water [Hg-D] and [MeHgD] ranged from 8 to 54 pmol.L-1 and from 1 to 32 pmol.L-1, respectively. Whereas the variation of [MeHgT] was explained by changes in [MeHgD], the variation of inorganic Hg-T [IHgT] = [Hg-T] - [MeHgT] was explained by changes in particle-bound IHg [IHgP] = [IHgT] - [IHgD]. Filterable organic matter and sulfide in the water both correlated poorly with [Hg-D]. Neither did the amount of Hg-T in precipitation and upland runoff water correlate well with the estimated discharge of Hg-D from the peat bog. However, there was a strong correlation between [Hg-D] and [MeHgT] in the peat water (r = 0.96). Furthermore, a significant fraction of Hg-D was MeHg (mean 28%; range 8-60%). These results suggest that methylation increased the mobility of Hg.}}, author = {{Regnell, Olof and Hammar, T}}, issn = {{1205-7533}}, language = {{eng}}, number = {{10}}, pages = {{2014--2023}}, publisher = {{Canadian Science Publishing, NRC Research Press}}, series = {{Canadian Journal of Fisheries and Aquatic Sciences}}, title = {{Coupling of methyl and total mercury in a minerotrophic peat bog in southeastern Sweden}}, url = {{https://lup.lub.lu.se/search/files/2767749/625085.pdf}}, doi = {{10.1139/F04-143}}, volume = {{61}}, year = {{2004}}, }