Environmental Monitoring and Assessment

, Volume 128, Issue 1–3, pp 343–349

Determination of Henry’s Law Constant of Formaldehyde as a Function of Temperature: Application to Air–Water Exchange in Tahtali Lake in Izmir, Turkey

Original Article

DOI: 10.1007/s10661-006-9317-3

Cite this article as:
Seyfioglu, R. & Odabasi, M. Environ Monit Assess (2007) 128: 343. doi:10.1007/s10661-006-9317-3

Abstract

The Henry’s law constant (H) is an important parameter in predicting the transport, behavior and fate of organic compounds in environment. H is also required to model the air–water exchange of chemicals. Henry’s law constant of formaldehyde (HCHO) was determined at six temperatures (50, 40, 30, 20, 10, and 5°C) using a bubble-column technique. The apparent Henrys law constant (H*) values were strongly correlated to inverse of temperature (1/T, K) and the following relationship was obtained:
$$\ln \;H^{{\text{*}}} = {\left( {{{\text{ - 1,641}}{\text{.3}}} \mathord{\left/ {\vphantom {{{\text{ - 1,641}}{\text{.3}}} T}} \right. \kern-\nulldelimiterspace} T} \right)} - 3.089$$
Seven concurrent ambient air and aqueous samples were also collected between October 11–17, 2005 at a sampling site located on the shoreline of Tahtali dam Lake in Izmir, Turkey to determine the magnitude and direction (deposition or gas-out) of HCHO flux. In all cases, the modeled gas-phase flux was positive (average ± SD, 3,181 ± 408 μg m−2 day−1) indicating that atmospheric HCHO deposited to the Tahtali Lake.

Keywords

air–water exchange formaldehyde gas stripping technique Henry’s law constant 

Copyright information

© Springer Science + Business Media B.V. 2006

Authors and Affiliations

  1. 1.Faculty of Engineering, Department of Environmental EngineeringDokuz Eylul UniversityIzmirTurkey

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