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The overuse of chemicals has been causing serious global pollution. Toxicity assessment and screening of chemicals effectively contribute to individualised management and control of toxic and harmful chemicals that are released into the environment. Moreover, they can protect the ecological environment and human health from the effect of these substances. This study is researching for A Textile Company in Suzhou, China, and uses the USEtox consensus model to calculate the toxic effects of pollution emissions on the ecological environment. In addition, the pollutants that should be controlled first are screened and identified through comprehensive analysis of accounting results. Results show that heavy metals are a major source of potential ecotoxicity and pollutants to be prioritised. Considering the total ecotoxicity ranking, category ranking and rankings within categories of pollutants discharged by A company, copper, nickel and manganese in heavy metals; tetrachlorophenol and pentachlorophenol in chlorinated chemicals; and nonylphenol/branched-4-nonylphenol and 4-octylphenol in alkylphenols should be primarily controlled. From the perspective of terminal control, the study puts forward that the objects of corporate environmental management should be transformed from 'medium management (wastewater, waste gas and waste residue)' to 'substance management (chemical)' and provides empirical evidence for the management and control of toxic and hazardous substances from 'comprehensive pollutant management' to 'single pollutant management'. The research results can provide theoretical basis and practical guidance for scientific decision-making in order to achieve priority management and control of pollutants and reduce the ecotoxic effects of chemical pollutants. [ABSTRACT FROM AUTHOR]

In the life cycle assessment framework, the comparison and assessment of chemical footprint (ChF) can be performed to identify the chemical categories with large toxic effect, including the initial inputs of chemical raw materials and the final emissions of chemical pollutants. In this study, the ChF methodology of textile and apparel products was demonstrated using the USEtox model with jeans production as a case study. Several chemical pollutants with large contribution to human and ecological toxicities were identified during the life cycle of the wet treatment process. The logarithmic plot and the cluster analysis indicate that dimethyl siloxane, reaction product with silica and 2-methyl-4-isothiazolin-3-one in the warp dyeing phase are two major contributors to human and ecological toxicities respectively. In the weft bleaching phase, magnesium chloride has high toxicity to humans, and sulfuric acid and nonylphenol ethoxylate have high toxicity to ecological environment. Therefore, these pollutants must be given much attention. The ChF results of chemical materials show that antifoaming agent in the warp dyeing phase has high toxicity to humans. In the weft bleaching phase, peroxide stabilizer has high toxicity to humans, and wetting/penetrating and sequestering agents have high toxicity to ecological environment. These findings can provide a practical guidance for the effective reduction in the toxic impact of textile industrial chemicals on humans and ecological environment. [ABSTRACT FROM AUTHOR]