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Göteborgs universitets publikationer

Toxicity of 9 shampoos to Daphnia magna and their detoxification by activated sludge

Författare och institution:
Göran Dave (Institutionen för biologi och miljövetenskap); Kajsa Boll (-)
Publicerad i:
6th SETAC World Congress 2012, 20-24 May, Berlin,
Konferensbidrag, poster
Sammanfattning (abstract):
Shampoos are primarily used for hair cleaning, but also to make hair soft and shiny and to prevent dandruff. To achieve these objectives, shampoos contain, in addition to surfactants, other ingredients like emulsifies, preservatives, plasticizers, perfumes, thickeners and colour. The anti-dandruff shampoos also contain fungicides. Several of these substances are known to be toxic to aquatic organisms, but unlike other cleaning products, eco-labelling is lacking for most shampoos. The aim of this study was to determine if toxicity and detoxification was different for 3 anti-dandruff, 3 ordinary, and 3 eco-labelled shampoos, and to determine their detoxification with and without activated sludge. The results showed that initial 24-h EC50s for Daphnia magna ranged from 0.54 to 163 mg L-1 (302-fold). A comparison between labelled ingredients and reported ingredient toxicity using a TU (Toxic Unit) approach could roughly explain the differences among the studied shampoos. The toxicity and also the variation in product toxicity decreased when the shampoos were detoxified (from 302-fold to 5-fold), but still the anti-dandruff shampoos were more toxic than the ordinary and the eco-labelled shampoos. The major finding of this study was that detoxification can be used as a combined determination of toxicity and biodegradation in order to get an estimate of the combined environmental hazard of complex chemical products like shampoos and detergents.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
Geovetenskap och miljövetenskap
Biologiska vetenskaper
Daphnia, detoxification, shampoo, Toxicity testing
Postens nummer:
Posten skapad:
2012-08-06 14:51

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