Analytical Sciences


Abstract − Analytical Sciences, 26(6), 723 (2010).

Determining the Henry’s Law Constants of THMs in Seawater by Means of Purge-and-Trap Gas Chromatography (PT-GC): The Influence of Seawater as Sample Matrix
Francisco RUIZ-BEVIA and Maria J. FERNANDEZ-TORRES
Chemical Engineering Department, University of Alicante, Carretera San Vicente del Raspeig s/n 03690 San Vicente del Raspeig-Alicante, Spain
The influence of seawater salts as salting out agents on the purge-and-trap gas chromatography (PT-GC) determination of trihalomethanes (THMs) was studied. This is particularly important since seawater is chlorinated when used as a cooling agent in coastal nuclear power stations. The chlorination produces unwanted THMs as by-products. A PT-GC apparatus was used to determine the Henry’s Law constant of each THM, with seawater as the sample matrix.