关键词: 危险废物司法鉴定, 毒性物质含量, 环境损害司法鉴定；污泥

Abstract: Objective This study aims to establish a comprehensive hazardous waste appraisal method for mixed solid waste, to ensure the scientific rigor and accuracy of the identification process. Methods Using the forensic appraisal of hazardous mixed sludge waste as an example, this study adopted a comprehensive analytical approach, applying precise initial screening techniques to identify characteristic pollutants. It further assessed corrosive, toxic, reactive, and flammable hazardous properties of the solid waste to effectively complete the hazardous waste determination. Results The mixed sludge was identified as lacking corrosive, toxic, reactive, and flammable properties, and therefore, it did not qualify as hazardous waste. Conclusion The combined approach of precise initial screening and hazardous properties analysis significantly enhances the efficiency and accuracy of forensic appraisal of hazardous waste, providing a practical model for identifying hazardous properties in complex solid waste.

Key words: hazardous waste forensic appraisal, toxic substance content, environmental forensic appraisal；sludge