On August 26, 2022, our company successfully delivered a Bruker micro ESR to Duke Kunshan University for use in scientific research and teaching in the fields of chemistry and environment.

Electron paramagnetic resonance method（ESR/EPR）Due to its ability to detect paramagnetic substances containing unpaired electrons:

1The most direct and sensitive;2No need for complex pre-processing;3Can be measured in situ and non destructively;4It has the advantages of being able to conduct qualitative and quantitative research, and has been widely used in scientific research, teaching, industrial production, etc. in the following fields:

aCatalysis (photocatalysis, electrocatalysis, catalyst modification):Identification of photogenerated electron and hole centers; The influence of semiconductor transition metal ion doping and surface modification on catalytic performance in catalysts; Qualitative and quantitative detection of active free radicals generated by photocatalysis;

bEnvironmental pollutant detection:Determination of polycyclic aromatic hydrocarbons; atmospheric particulate matter(asPM2.5)Persistent free radicals in the environment, such as particulate matter from coal combustion, biochar, organic polluted soil, and metal nanoparticles carrying organic matter( EPFRS)testing; Determination of peroxyl radicals and nitrate radicals in the atmosphere;

cMaterial doping:Catalytic material modification, material doping, lattice defects;

dTheROSreactive oxygen speciesPharmacological research on inflammatory response and tumor substances;

eOxidation of food and beverages/antioxidantAnalysis of shelf life and determination of antioxidant properties for beer, edible oil, and beverages;

fDose detection of irradiated food:Rapid and reliable detection of radiation residue dose in foods containing cellulose and bone (with EU standards)

Brooke electron paramagnetic resonance spectrometerMicro ESR is a portable research grade electron spin resonance spectrometer, weighing only 10 kg and measuring 30.5 x 30.5 x 30.5(cm)It can be easily transported to the site without the need for special installation or regular maintenance. asaPortable and movableContinuous wave（CW spectrometer with a scanning range exceeding 500 GaussThe sample being testedIt can be liquid, solid, or gas.

Kunshan Duke University（Duke Kunshan University）It's a classicMinistry of Education of the People's Republic of ChinaApproved, byWuhan UniversityandDuke UniversityA Sino foreign cooperative university with independent legal personality jointly established isSino Foreign Cooperative University AllianceMembersChina Global Health University Alliance（CCUGH）Members. School opening14A bachelor's degree major with existing faculty and staff800More than people, the teaching team is mainly composed of professors from Duke University in the United States and globally appointed professors from Duke Kunshan University.The school adopts an all English teaching method; Equip each undergraduate student with a personal professor mentor to provide guidance on learning methods, course and major selection, and further education; All undergraduate students can study at Duke University in the United States for up to six months during their junior year.