Long-Term Elemental Dry Deposition Fluxes Measured around Lake Michigan with an Automated Dry Deposition Sampler

Abstract

Long-term measurements of mass and elemental dry deposition (Mg,

Atmospheric Wet and Dry Depositions of Ions over an Urban Location in South-West India

“…The dominant ion in the DD was underlying surfaces (canopies, soils, water, etc). However, there are many uncertainties in the methods of quantifying DD (Yi et al, 1997;Shahin et al, 2000). To date, there is as yet no accepted technique for evaluating the accuracy of these methods.…”

Overall elemental dry deposition velocities measured around Lake Michigan

“…Sampling started on December 1993 and concluded in October 1995. Sampling times extended between 4 and 57 days depending on the sampling site and season with an average of 22 days (Franz et al, 1998;Shahin et al, 2000).…”

“…Table 1 shows the average dry deposition #ux for ten elements at these three sites (Shahin et al, 2000). The #ux of primarily crustal elements was higher and more variable than the #ux of primarily anthropogenic elements at all the sites.…”

Toxicological Profile for Zinc

“…Between 1993, Shahin et al (2000 estimated the dry deposition flux of zinc in Chicago to be 4.4x10 4 µg/m 2 /year. Atmospheric deposition rates of zinc for Lakes Superior, Erie, and Ontario were reported to be 3,310, 2,180, and 5,650 µg/m 2 /year, respectively (Nriagu et al 1996).…”