Nanjing University

Jichun Wu

Aimin Li

Yan Li

Wentao Li

Ji Wu

Si Wei

Yaping Wu

Wenxiang Ji

Nanyang Yu

Yuze Han

Minhui Cai

Shi Cheng

Yanting Zuo

Mengwen Liu

Xiaobin Zhu

Disclosed are a method and system for intelligent source tracing of organic pollution of a water body, which belongs to the technical field of environmental analytical chemistry. The method comprises: acquiring organic matter analysis and detection data from water samples of a polluted water body through high performance liquid chromatography-tandem mass spectrometry; performing high-throughput screening on the organic matter in the water samples according to said data to determine pollutants; identifying pollution sources by means of network analysis according to the determined pollutants; and according to the identified pollution sources and the organic pollutants, determining key pollutants and quantifying the pollution contributions thereof by using a machine learning classification model. The present invention can achieve intelligent tracing of the pollution sources and the key pollutants thereof in the case of the pollution sources being unknown, and provide technical support for investigation and control of organic pollution in a water environment.

Method and system for intelligent source tracing of organic pollution of water body

Disclosed is an organic carbon detector that can be used with a liquid chromatography equipment such as a size exclusion chromatography. The organic carbon detector contains a carbon oxidization subsystem and a stripping and COdetection subsystem arranged and detachably connected with each other in said order. The carbon oxidization subsystem contains a microfluidic agent injection module (), an inorganic carbon removal module (), a microfluidic ultraviolet oxidation module () and a vacuum pumping system (), configured to remove inorganic carbons and oxidize organic carbons. The stripping and COdetection subsystem contains a stripping module () and a COdetector (), using a carrier gas to transfer the organic carbon converted gas to the COdetector (). Also disclosed is a method of using the organic carbon detector in water quality monitoring.

Organic carbon detector for liquid chromatography and use thereof

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Nanjing, China

Jichun Wu