The latest groundbreaking achievement was published in the academic journal *Water Research* in the field of environmental engineering! Professor Chen Baiyang's research team at Harbin Institute of Technology (Shenzhen), leveraging the SHINE ion chromatograph, established the world's first automated purification and enrichment of chloronitramide anion in water. They successfully produced high-standard samples with purity exceeding 99% and concentrations reaching 24 mM, breaking through the core bottleneck in the study of novel disinfection byproducts. This further validates the capabilities of domestic ion chromatography in an internationally authoritative journal!

Water Research is an internationally recognized top tier journal in the field of water under Elsevier. It has been established for over 50 years and has consistently ranked among the top journals in the 1st district of the Chinese Academy of Sciences and the JCR Q1 district. Its latest impact factor is as high as 12.8, with a 5-year impact factor of 13.4. It is the highest publishing platform in the fields of global water environment, water treatment, and disinfection by-products. The half-life of paper citations is as long as 5.7 years, and the research results have long-term industry guidance value; The review criteria are strict, using a non recommended reviewer mechanism and strict academic quality control through blind review. Only research with breakthrough innovation can be accepted; The research direction benchmark focuses on core livelihood issues such as drinking water safety, disinfection by-products, and water pollution control. Each achievement leads the global water quality research direction. The paper "Purification and enrichment of chloronitroamide anion in water" by Chen Baiyang's team focused on the new pollutant of drinking water (Cl – N – NO ₂ ⁻), which is a cutting-edge hot spot in the global water environment field. It can be published in this journal, fully proving the originality, progressiveness and practicability of the whole set of chromatographic preparation methods.

Chen Baiyang, a professor and doctoral supervisor at the School of Ecology and Environment, Harbin Institute of Technology (Shenzhen), is a leading expert in the field of water environment and ion chromatography in China. His multiple academic identities demonstrate industry influence: he is the deputy editor in chief of the top international journal "Journal of Hazardous Materials" and controls the evaluation of academic achievements in the field of global environmental pollutants; Vice Chairman of the National Ion Chromatography Professional Committee, a core leader in the field of ion chromatography analysis methods and instrument applications in China; The research direction focuses on the generation, detection, and control of disinfection by-products in drinking water, with a long-term focus on tackling trace amounts of nitrogen-containing disinfection by-products (DBPs) in water and solving multiple water quality safety research pain points; PhD from a prestigious overseas university, years of experience in frontline engineering research and development, leading multiple National Natural Science Foundation projects, and continuously promoting the deep integration of industry, academia, and research in "domestic ion chromatography+environmental pollutant analysis". 

The industry significance of this study is that the chloronitroamide anion is a newly confirmed disinfection byproduct by Science in 2024. It has been widely detected in chloramine disinfected water bodies in water plants across the country and the United States, with a median concentration far exceeding that of most controlled DBPs, posing unknown risks to human health. However, for a long time, the substance has been synthesized with extremely high impurities, conventional extraction cannot enrich it, there are no commercial standard products on the market, and there is a lack of high-purity and high concentration samples, which directly freezes the toxicity, environmental fate, and toxicity testing of all subsequent studies. The innovation of the Chen Baiyang team focuses on solving the problem of sample preparation, and the core carrier of the entire automated purification and enrichment solution is the CIC-D180 ion chromatograph independently developed by SHINE.

▲ Valve switching enrichment+vacuum concentration process flow

The entire set of "One-Pump Column-Switching Ion Chromatography (OPCS-IC) Automated Purification and Enrichment System" in the paper is equipped with the SHINE ion chromatograph and a self-developed SHY-A-7 suppressor to complete key experiments throughout the entire process.