Long-term Atmospheric Mercury Wet Deposition at Underhill, Vermont
dc.contributor.author | Gratz, Lynne E. | en_US |
dc.contributor.author | Al-wali, Khalid | en_US |
dc.contributor.author | Keeler, Gerald J. | en_US |
dc.date.accessioned | 2006-09-11T14:48:31Z | |
dc.date.available | 2006-09-11T14:48:31Z | |
dc.date.issued | 2005-03 | en_US |
dc.identifier.citation | Keeler, Gerald J.; Gratz, Lynne E.; Al-wali, Khalid; (2005). "Long-term Atmospheric Mercury Wet Deposition at Underhill, Vermont." Ecotoxicology 14 (1-2): 71-83. <http://hdl.handle.net/2027.42/44444> | en_US |
dc.identifier.issn | 1573-3017 | en_US |
dc.identifier.issn | 0963-9292 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/44444 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=15931959&dopt=citation | en_US |
dc.description.abstract | Section 112(m) of the 1990 Clean Air Act Amendments, referred to as the Great Waters Program, mandated an assessment of atmospheric deposition of hazardous air pollutants (HAPs) to Lake Champlain. Mercury (Hg) was listed as a priority HAP and has continued to be a high priority for a number of national and international programs. An assessment of the magnitude and seasonal variation of atmospheric Hg levels and deposition in the Lake Champlain basin was initiated in December 1992 which included event precipitation collection, as well as collection of vapor and particle phase Hg in ambient air. Sampling was performed at the Proctor Maple Research Center in Underhill Center, VT. The range in the annual volume-weighted mean concentration for Hg in precipitation was 7.8–10.5 ng/l for the 11-year sampling period and the average amount of Hg deposited with each precipitation event was 0.10 μg/m 2 . The average amount of Hg deposited through precipitation each year from 1993 to 2003 was 9.7 μg/m 2 /yr. A seasonal pattern for Hg in precipitation is clearly evident, with increased Hg concentrations and deposition observed during spring and summer months. While a clear trend in the 11-year event deposition record at Underhill was not observed, a significant decrease in the event max-to-monthly ratio was observed suggesting that a major source influence was controlled over time. Discrete precipitation events were responsible for significant fractions of the monthly and annual loading of Hg to the forested ecosystem in Vermont. Monthly-averaged temperatures were found to be moderately correlated with monthly volume-weighted mean Hg concentrations ( r 2 =0.61) and Hg deposition ( r 2 =0.67) recorded at the Vermont site. Meteorological analysis indicated the highest levels of Hg in precipitation were associated with regional transport from the west, southwest, and south during the warmer months. | en_US |
dc.format.extent | 388938 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Kluwer Academic Publishers; Springer Science+Business Media, Inc. | en_US |
dc.subject.other | Trends | en_US |
dc.subject.other | Speciation | en_US |
dc.subject.other | Public Health/Gesundheitswesen | en_US |
dc.subject.other | Environmental Management | en_US |
dc.subject.other | Medicine & Public Health | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Monitoring/Environmental Analysis/Environmental Ecotoxicology | en_US |
dc.subject.other | Seasonal Patterns | en_US |
dc.subject.other | Photochemistry | en_US |
dc.title | Long-term Atmospheric Mercury Wet Deposition at Underhill, Vermont | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | University of Michigan Air Quality Laboratory, Ann Arbor, 48109, MI, USA | en_US |
dc.contributor.affiliationum | University of Michigan Air Quality Laboratory, Ann Arbor, 48109, MI, USA | en_US |
dc.contributor.affiliationum | University of Michigan Air Quality Laboratory, Ann Arbor, 48109, MI, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.identifier.pmid | 15931959 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/44444/1/10646_2004_Article_6260.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/s10646-004-6260-3 | en_US |
dc.identifier.source | Ecotoxicology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.