You are here: Home
/ Publication Information
Title: Litterfall mercury dry deposition in the eastern USA
Author: Risch, Martin R.; DeWild, John F.; Krabbenhoft, David P.; Kolka, Randall K.; Zhang, Leiming.;
Source: Environmental Pollution. 161: 284-290.
Publication Series: Scientific Journal (JRNL)
Description: Mercury (Hg) in autumn litterfall frompredominately deciduous forestswas measured in 3 years of samples from 23 Mercury Deposition Network sites in 15 states across the eastern USA. Annual litterfall Hg dry depositionwas significantly higher (median 12.3 micrograms per square meter (µg/m2), range 3.5-23.4 µg/m2) than annual Hg wet deposition (median 9.6 µg/m2, range 4.4-19.7 µg/m2). The mean ratio of dry to wet Hg deposition was 1.3-1. The sum of dry and wet Hg deposition averaged 21 µg/m2 per year and 55% was litterfall dry deposition. Methylmercury was a median 0.8% of Hg in litterfall and ranged from 0.6 to 1.5%. Annual litterfall Hg and wet Hg deposition rates differed significantly and were weakly correlated. Litterfall Hg dry deposition differed among forest-cover types. This study demonstrated howannual litterfall Hg dry deposition rates approximate the lower bound of annual Hg dry fluxes.
Keywords: Mercury, Litterfall, Dry deposition, Wet deposition, Methylmercury
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
XML: View XML
Risch, Martin R.; DeWild, John F.; Krabbenhoft, David P.; Kolka, Randall K.; Zhang, Leiming. 2012. Litterfall mercury dry deposition in the eastern USA. Environmental Pollution. 161: 284-290.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility