Preliminary Research On Technical Method For Compilation For Water Quality Criteria In China

Water Quality Criteria(WQC)are the science basis to establish water environmental quality standards as well as water environmental management and pollution prevention.Ecotoxicology data from abroad,such as the data from US ecotoxicology database(Ecotoxicology Knowledgebase,ECOTOX)and Pesticide Action Network-Pesticide Database(PAN),have been mainly selected in the study of environmental criteria.The investigation and compilation for WQC Data concerned are still in its nascent phase due to the lack of its national technical specification.The ecotoxicology database has played an important role in environmental protection and scientific research,particularly in the study of environmental criteria.At present,the lack of a basic toxicity database and platform supporting China's environmental management work has become one of the bottlenecks restricting the country in carrying out the creation of environmental standards,ecological risk assessment,environmental quality assessment,pollution control,toxicology,and so on.Therefore,the establishment of a local biological toxicity database and platform is urgently needed in China.The technology and experience of the US ecotoxicology database has important implications for the creation of similar databases in China.The present paper systematically summarizes the core content of the ECOTOX database's formation,namely literature collection,data sources,data acquisition and data collection elements,and comparatively studies the current domestic toxicity database and other databases closely related to the ecological survey data.Some problems exist in the ECOTOX database.For instance,data entries(fields)still remain to be increased further;the database construction method is counter-intuitive;relatively few toxicity data have been collected in non-English literature;the connection with research related to ecotoxicology is not enough close;the existing Chinese ecotoxicity database lacks practicability and poor reliability.From the perspectives of environmental standard,ecological risk assessment and toxicology research development,this paper proposes the creation of a Chinese ecological toxicity database,including complete,shared and effective ecological toxicity data resources;the formation of toxicological data processing standards and norms;the cohesion of existing domestic databases;and the use of large data cloud computing technology,with a focus on the collection of the local Chinese biology and toxicity data of new pollutants.Based on the above analysis,Technical specification for compilation for aquatic toxicity have been preliminary designed to fill a domestic gap in national technical specification and standards for compilation for the ecotoxicology data,including,the principles for data compilation,data sources,data contents for compilation,the methods of data quality assurance and control,the requirements for classifying,preserving and marshalling.This work will provide a reference for national technical specification for compilation for Chinese ecotoxicity data and take the first steps toward its database.