PT04 Endocrine-Disrupting Chemicals in Wastewater Treatment Effluents
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(PT059) Analytical method for the monitoring of hormones in Quebec's rivers (2003).

DeBlois, C.1, Houde, F. 1, Veillette, C., Tremblay, H.2, Robert, C.2, 1 Ministry of environment Quebec, Centre d'expertise en analyse environnementale, Ste-Foy, Quebec, Canada2 Ministry of environment Quebec, Direction du milieu municipal, Ste-Foy, Quebec, Canada

ABSTRACT- Estrone, 17 - estradiol, estriol, 17 - ethinylestradiol, testosterone, 4-ter-octylphenol, nonylphenols and bisphenol A are substances that could induce endocrine perturbation. These substances were found in Europe in surface water used for drinking water treatment plant, in influents and effluents from municipal treatment plants. However, little is known on their occurrence and fate in the environment. We developed and adapted methods for the monitoring of these substances in Quebec's rivers, in raw water and drinking water. These substances are extracted on HLB cartridge and analysed by GC-MS. A monitoring program was initiated in 2003 in order to obtain information on their occurrence in rivers from spring 2003 to winter 2004. Samples were analysed respectively for the presence of these substances in rivers running through agricultural regions and surface water (SW n= 45) used for drinking water (DW n=45) treatment plant. In parallel, 7 municipal wastewater (MWW n=33) effluents were sampled during the same period. Detection limits are 0.5 to 4 ng/l and 1 to 10 ng/l for surface water and used water respectively. 4-ter-octylphenol, nonylphenols, bisphenol A, estrone, coprostan-3-ol, coprostan-3-one and cholesterol were detected in SW, DW and MWW. 17 - estradiol, estriol and coprostan were detected in SW and MWW. Testosterone was only detected in SW.

Key words: GC-MS, hormones, Estradiol, nonylphenol

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