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Aquatic Risk Assessment of Alcohol Ethoxylates, Alcohol Ethoxysulphates and Linear Alkylbenzene Sulphonate used in Household Detergents

Riskobewertung für Gewässer, die Alkoholethoxilate, Alkoholethoxisulfate und lineare Alkylbenzensulfonate aus Haushaltswaschmitteln enthalten
D. Rasmussen, T. Slothuus, G. I. Petersen and T. Madsen

Abstract

Exposure and effect assessments including risk characterisation of the surfactants alcohol ethoxylates, alcohol ethoxysulphates and linear alkylbenzene sulphonates used in household detergents were conducted. Predicted environmental concentrations were calculated by use of traditional methods and detailed transport and fate modelling. Predicted no effect concentrations were derived from the available information on the acute and chronic aquatic toxicity. Risk characterisation ratios were defined as the ratio of the predicted environmental concentration to the predicted no effect concentration. Risk characterisation ratios were calculated for fresh water and marine water and were below 1. This indicates that based on the methods employed in this study the use of alcohol ethoxylates, alcohol ethoxysulphates and linear alkylbenzene sulphonate in household detergents does not appear to present a risk to the aquatic environment.

Kurzfassung

Es wurde eine Untersuchung der Exposition und Einwirkung, einschließlich einer Risikobewertung der Tenside Alkoholethoxilat, Alkoholethoxisulfat und Alkylbenzensulfonat, die in Haushaltswaschmittel eingesetzt werden, durchgeführt. Die Berechnung der vorhergesagten Konzentrationen in der Umwelt wurde sowohl mit traditionellen Methoden als auch mit einem reaktiven Stofftransportmodell durchgeführt. Die Konzentration, die keine Einwirkung auf aquatische Organismen hat, wurde aus den verfügbaren Informationen über die akute und chronische aquatische Toxizität abgeleitet. Risikoquotienten wurden als Verhältnis zwischen der vorhergesagten Konzentration in der Umwelt und der Konzentration definiert, bei der keine Wirkung in der Umwelt zu erwarten ist (PNEC). Die Risikoquotienten, die sowohl für Süß- als auch Meerwasser berechnet wurden, waren alle kleiner als 1. Diese Bewertung aufgrund der hier angewendeten Methoden zeigt, dass der Einsatz von Alkoholethoxilat, Alkoholethoxysulfat und Alkylbenzensulfonat in Haushaltswaschmitteln wahrscheinlich kein Risiko für die aquatische Umwelt darstellt.


Torben Madsen, DHI, Department of Environment and Toxicology, Hoersholm, Denmark, DHI, Agern Allé 5, DK-2970 Hoersholm, Denmark, Tel.: +45-45169200, Fax: +45-45169292. E-Mail:

Dorte Rasmussen, Ph.D. in chemical engineering, is senior chemical engineer at DHI. She is working with exposure assessment of chemicals, including exposure scenarios in relation to REACH, and computer modelling of the environmental fate of chemicals.

Tina Slothuus, M.Sc. in biology, is ecotoxicologist and GLP study director at DHI. She is working with experimental studies of aquatic toxicity and environmental hazard and risk assessment of chemicals, including surfactants and other detergent ingredients.

Gitte Ingelise Petersen, Ph.D. in bioaccumulation and ecotoxicology, is senior biologist and GLP study director at DHI. She is working with experimental studies of long-term chronic effects of chemicals, which include studies with early life stages of fish and studies of endocrine disrupting effects.

Torben Madsen, Ph.D. in environmental microbiology, is Head of department at DHI. He is working with environmental hazard and risk assessment of chemicals, which includes ecotoxicological studies of surfactants and other detergent ingredients.


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Received: 2011-01-03
Published Online: 2013-04-11
Published in Print: 2011-09-01

© 2011, Carl Hanser Publisher, Munich