Abstract：
:Pulp and paper mill effluents have been linked to effects on fish reproduction for more than 25 years. To date, the causes of these effects and remedial strategies have eluded investigators. Recent work has shown that the degree of reproductive effect caused by a mill effluent is related to the overall organic content. If verified, this could lead to breakthroughs for best management practices (BMPs). For this study, the effluents from seven kraft mills were assessed for their ability to reduce egg production in fathead minnow (Pimephales promelas) in the laboratory. At the same time, the effluents were analyzed for three parameters thought to be good indicators of organic losses: biochemical oxygen demand (BOD), methyl-substituted 2-cyclopentenones (cellulose degradation products), and a gas chromatographic (GC) profile index, which integrates the total area of the chromatographic peaks of solvent-extracted effluents using low-resolution mass spectrometry. The results showed that the degree to which the effluents reduced egg production increased with increased organic losses as characterized by BOD and the GC profile index. Therefore, these parameters could be used to guide BMPs at kraft mills according to specific targets: BOD < 20 mg/L and GC profile index equivalent to effluent with BOD of 20 mg/L. Such targets should be achievable by good in-plant control of organic losses and optimized effluent biotreatment systems.
journal_name
Environ Toxicol Chemjournal_title
Environmental toxicology and chemistryauthors
Kovacs TG,Martel PH,O'Connor BI,Parrott JL,McMaster ME,Van Der Kraak GJ,MacLatchy DL,van den Heuvel MR,Hewitt LMdoi
10.1002/etc.526subject
Has Abstractpub_date
2011-06-01 00:00:00pages
1421-9issue
6eissn
0730-7268issn
1552-8618journal_volume
30pub_type
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