AOX analyzerThe (Adsorbable Organic Halogen Analyzer) uses high-temperature combustion method combined with ion chromatography or microcoulometry to accurately determine the content of organic halogens in samples, and is widely used in environmental monitoring, industrial production, scientific research and education, and other fields. The following is a detailed introduction to its core application areas:
1、 Environmental monitoring and protection
water quality monitoring
Drinking water safety assessment: Detect the AOX content in water to ensure compliance with national drinking water standards (such as the limit requirements for halogenated hydrocarbons in China's "Sanitary Standards for Drinking Water"), and safeguard public health.
Investigation of surface water and groundwater pollution: Analyze the sources of AOX pollution in rivers, lakes, reservoirs, and groundwater (such as industrial wastewater discharge and agricultural non-point source pollution), and provide data support for water environment restoration.
Evaluation of sewage and wastewater treatment effectiveness: Monitor the concentration of AOX in the inlet and outlet water of the sewage treatment plant, and evaluate the removal efficiency of organic halogens by treatment processes such as activated carbon adsorption and biodegradation.
Soil and sediment testing
Remediation of contaminated sites: Determine the residual amount of AOX in soil, identify contaminated areas (such as chemical sites and landfills), and guide the selection of remediation technologies (such as thermal desorption and chemical oxidation).
Assessment of sediment environmental quality: Analyze the accumulation of AOX in river and lake sediments and evaluate their long-term impact on aquatic ecosystems.
Marine and nearshore environmental monitoring
Marine pollution investigation: detecting AOX in seawater and marine sediments, studying the toxic effects of marine oil pollution and industrial wastewater discharge on marine organisms.
Coastal ecological protection: Monitor AOX in water bodies of ports and aquaculture areas to prevent the harm of organic halogens to fishery resources.
2、 Industrial Production and Process Control
Pulp and paper industry
Optimization of bleaching process: During the pulp bleaching process, a large amount of AOX (such as chlorinated phenols and dioxins) is generated. The AOX content in the bleaching wastewater is monitored by an analyzer to guide enterprises to adjust the dosage of bleaching agents or switch to chlorine free bleaching technologies (such as ECF and TCF), reducing environmental pollution.
Compliance testing of wastewater discharge: Ensure that the concentration of AOX in papermaking wastewater meets national discharge standards (such as the limit requirements for AOX in China's "Water Pollutant Discharge Standards for Pulp and Paper Industry").
Chemical and pharmaceutical industry
Raw material and product testing: Analyze AOX residues in chemical raw materials (such as halogenated hydrocarbons, chlorine containing solvents) and finished products to control product quality.
Production process monitoring: Monitor AOX in chemical production wastewater, optimize process flow (such as recycling and end of pipe treatment), and reduce pollutant emissions.
Garbage disposal and resource utilization
Landfill leachate analysis: Landfill leachate often contains high concentrations of AOX (such as plastic degradation products). The leachate treatment effect is evaluated by an analyzer to prevent secondary pollution.
Waste oil and hazardous waste detection: Determine the total halogens (TX) or total organic halogens (TOX) in special matrices such as waste oil and poly (methyl methacrylate) waste, providing a basis for the classification and disposal of hazardous waste.
3、 Research and Education Fields
Environmental Science Research
Research on pollutant migration and transformation: Analyze the distribution characteristics of AOX in soil, water, and atmosphere, reveal its environmental behavior (such as adsorption, degradation, bioaccumulation), and ecological risks.
New pollutant screening: Study the detection methods and environmental effects of emerging organic halogen pollutants (such as perfluorinated compounds and brominated flame retardants).
University and Laboratory Teaching
Analytical Chemistry Experiment Teaching:AOX analyzerAs an analytical instrument, it can be used in undergraduate/graduate laboratory courses to cultivate students' mastery of advanced detection technologies such as high-temperature combustion and ion chromatography.
Collaboration on scientific research projects: Support research projects in disciplines such as environment, chemistry, and ecology, such as studying pollutant degradation mechanisms and developing new adsorption materials.