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Titolo:
Unique chlorine chemistry in cooling water affects Daphnia magna toxicity targets
Autore:
Kovacs, TG; Naish, V; Gibbons, JS; OConnor, BI; Dunn, T;
Indirizzi:
PAPRICAN, Pointe Claire, PQ H9R 3J9, Canada PAPRICAN Pointe Claire PQ Canada H9R 3J9 ointe Claire, PQ H9R 3J9, Canada Domtar Innovat Ctr, Senneville, PQ, Canada Domtar Innovat Ctr Senneville PQ Canada ovat Ctr, Senneville, PQ, Canada Domtar Cornwall Business Ctr, Cornwall, ON, Canada Domtar Cornwall Business Ctr Cornwall ON Canada tr, Cornwall, ON, Canada
Titolo Testata:
PULP & PAPER-CANADA
fascicolo: 5, volume: 101, anno: 2000,
pagine: 21 - 25
SICI:
0316-4004(200005)101:5<21:UCCICW>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Keywords:
kraft mills; cooling systems; effluents; toxicity; chlorine; measurement; bleached pulps; hardwoods;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Kovacs, TG PAPRICAN, 570 St Johns Blvd, Pointe Claire, PQ H9R 3J9, Canada PAPRICAN 570 St Johns Blvd Pointe Claire PQ Canada H9R 3J9 nada
Citazione:
T.G. Kovacs et al., "Unique chlorine chemistry in cooling water affects Daphnia magna toxicity targets", PULP PAPER, 101(5), 2000, pp. 21-25

Abstract

Duc to residual chlorine, the cooling water discharge from two bleached kraft mills occasionally exceeded the regulatory toxicity limit for Daphnia magna But the measured total residual chlorine (TRC) concentration did not correlate with the toxicity. Experiments showed that different doses of chlorine, added to river water, could produce water samples with the same levelof TRC. However, the type of compounds measured as TRC differed as the chlorine dose was increased. This explains why for example, the same concentration of TRC could cause zero or 100% mortality Accordingly, there is no reason to expect a strong correlation between toxicity and TRC levels in cooling water.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 12:40:26