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Publication Date: 15/11/2012

Pages: 150

ISBN13: 9781780401102

eISBN: 9781780401102

WERF Report TOBI1T11

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The Water Environment Research Foundation (WERF) commissioned a study to assemble high quality, unpublished data on 61 trace organic chemicals (TOrCs) detected in biosolids. The chemical classes of the TOrCs included antibiotics, steroids, hormones, organotins, surfactants, organosiloxanes, fragrance raw materials, antimicrobials, and alcohol ethoxylates. Data on physical-chemical, environmental fate, ecotoxicology, and mammalian toxicology endpoints were compiled by queries of 48 electronic databases, and by broad communications with corporations, trade associations, water and wastewater utilities, and regulatory authorities. A substantial volume of unpublished (or recently published) experimental data was collected. Of the 61 TOrCs evaluated, mammalian toxicology data and pharmacological data that can be used to derive human health benchmarks were identified for 29 of the TOrCs. Empirical data for the physical-chemical, environmental fate, and ecotoxicological endpoints were less abundant; however, estimates predicted by structure-activity modeling were more readily available for these endpoints. This investigation identified numerous outstanding data gaps for the 61 TOrCs. Recommendations on how to fill the remaining data gaps are proposed through read-across and derivation approaches.

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