Pretreatment device for precise quantification and isotope analysis of dissolved organic nitrogen
By designing a pretreatment device for precise quantification and isotope analysis of dissolved organic nitrogen, and utilizing electrodialysis and photocatalysis technologies, the problems of speed and accuracy in isotope analysis of dissolved organic nitrogen were solved, thus achieving precise quantification and isotope analysis traceability of dissolved organic nitrogen.
CN224435897UActive Publication Date: 2026-06-30KUNMING INST OF ECOLOGICAL & ENVIRONMENTAL SCI +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING INST OF ECOLOGICAL & ENVIRONMENTAL SCI
- Filing Date
- 2025-05-15
- Publication Date
- 2026-06-30
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Figure CN224435897U_ABST
Abstract
This invention discloses a pretreatment device for precise quantification and isotope analysis of dissolved organic nitrogen, including an extraction and filtration device for extracting and filtering the sample; and a separation and purification device connected to the extraction and filtration device for separating and purifying the extracted and filtered solution to obtain purified dissolved organic nitrogen. The separation and purification device is an electrodialysis device, or it includes an aluminum electrode ionization system, an anion and cation exchange membrane, and a fractional purification system. This invention provides a basis for rapidly and accurately analyzing the isotope content of dissolved organic nitrogen and phosphorus in sediments and effectively tracing the source of dissolved organic nitrogen and phosphorus based on the detection results.
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