Measurement of the vapor phase deposition of polychlorinated bipheyls (PCBs) using a water surface sampler


Tasdemir Y., Odabasi M., Holsen T.

ATMOSPHERIC ENVIRONMENT, vol.39, no.5, pp.885-897, 2005 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 5
  • Publication Date: 2005
  • Doi Number: 10.1016/j.atmosenv.2004.10.032
  • Journal Name: ATMOSPHERIC ENVIRONMENT
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.885-897
  • Keywords: PCB, air-water exchange, MTC, flux, dry deposition, POLYCYCLIC AROMATIC-HYDROCARBONS, MICHIGAN MASS-BALANCE, LAKE-MICHIGAN, DRY DEPOSITION, GREEN BAY, ATMOSPHERIC DEPOSITION, GREAT-LAKES, ORGANIC POLLUTANTS, GAS-EXCHANGE, SEASONAL-VARIATIONS

Abstract

A water surface sampler (WSS) was employed in combination with greased knife-edge surface deposition plates (KSSs) to measure the vapor phase deposition rates of PCBs to the sampler at an urban site, Chicago, IL. This sampler employed a water circulation system that continuously removed deposited PCBs. Total (gas + particle) and particulate PCB fluxes were collected with the WSS and KSSs, respectively. Gas phase PCB fluxes were then calculated by subtracting the KSS fluxes (particulate) from the WSS fluxes (gas + particle). The calculated gas phase PCB fluxes averaged 830 +/- 910 ng m(-2) d(-1). This flux value is, in general, higher than the fluxes determined using simultaneously measured air-water concentrations in natural waters and is in the absorption direction. This difference is primarily because the PCBs were continuously removed from the WSS water keeping the water PCB concentration near zero.