Skip to content

Size distribution of particulate mercury in marine and coastal atmospheres

by D. M. Feddersen, R. Talbot, H. Mao, B. C. Sive
Atmospheric Chemistry and Physics ()
Get full text at journal

Abstract

A study was conducted to determine the size dis-tribution of particulate mercury (Hg P) at a marine and coastal site, and to compare the seasonal variability at both sites. Data was collected during summer 2009 and 2010, winter 2010, and spring 2010. Two cascade impactors were used to collect Hg P in ten size fractions ranging from > 10 µm to < 0.4 µm. During summer 2009, Hg P was found mainly (50–60 %) in coarse fractions, 1.1 to 5.8 µm, composed of sea salt particles at both our coastal site (Thompson Farm) and marine site (Appledore Island). In winter, Hg P at Thompson Farm was dominated (65 %) by fine particles, while in spring and summer 2010, at both sites, Hg P was distributed across the coarse and fine fractions (40 % each). Using bulk filters to collect total Hg P , we show a diurnal cycle that matches that of gaseous elemental mercury. Finally, dry deposition rates of Hg P were calculated to be 1.7–2.8 ng m −2 day −1 in the sum-mer, 4.6 ng m −2 day −1 in the winter, and 2.5 ng m −2 day −1 in the spring.

Cite this document (BETA)

Readership Statistics

8 Readers on Mendeley
by Discipline
 
50% Earth and Planetary Sciences
 
25% Environmental Science
 
25% Chemistry
by Academic Status
 
38% Researcher
 
13% Professor > Associate Professor
 
13% Student > Bachelor
by Country
 
13% Brazil

Sign up today - FREE

Mendeley saves you time finding and organizing research. Learn more

  • All your research in one place
  • Add and import papers easily
  • Access it anywhere, anytime

Start using Mendeley in seconds!

Sign up & Download

Already have an account? Sign in