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- W4282961459 abstract "Abstract Cationic polymers are considered by the scientific and regulatory communities as a group of greater interest amongst the polymers in commerce. As a category, relatively little hazard information is available in the public literature. Very few examples exist of published, high‐quality polymer characterization and quantification of exposure. In the present study we describe a series of fish embryo toxicity (FET) and fish gill cytotoxicity assays used to establish a baseline understanding of several representative polyquaternium categories (PQ‐6, PQ‐10, PQ‐16) in animal alternative models, accompanied by high‐quality analytical characterization. Materials were chosen to encompass a range of molecular weights and charge densities to determine the influence of test material characteristics on toxicity. Both chorionated and dechorionated FET assays were generally similar to published acute fish toxicity data. Toxicity was correlated with cationic polymer charge density, and not with molecular weight, and was a combination of physical effects and likely toxicity at the site of action. Toxicity could be ameliorated by humic acid in a dose‐dependent manner. Fish gill cytotoxicity results were orders of magnitude less sensitive than FET test responses. Environ Toxicol Chem 2022;41:2259–2272. © 2022 SETAC" @default.
- W4282961459 created "2022-06-17" @default.
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- W4282961459 date "2022-07-25" @default.
- W4282961459 modified "2023-10-17" @default.
- W4282961459 title "Understanding Ecotoxicological Responses of Fish Embryos and Gill Cells to Cationic Polymers" @default.
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- W4282961459 doi "https://doi.org/10.1002/etc.5410" @default.
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