Aerosol chemistry related to air pollution was studied.
The real-time sampling and detection technology of a single nano-particle (diameter 5-20nm) in the air was studied.
This technology is characterized by applying aerodynamic focusing lens to ultra-small aerosol particles (5-20nm), using quadrupole as ion guide to transport charged particles efficiently, and using ion trap enrichment method to improve detection efficiency. The final detection is atomization by high-energy laser and detection of various components by time-of-flight mass spectrometry.
This method can play a role in the study of aerosol nucleation.
In this study, an on-site aerosol mass spectrometer with high-energy laser Nd:YAG atomization and time-of-flight mass spectrometry was established, and the elements of a single particle were analyzed by aerodynamic focusing principle.
The control and sampling programs are compiled and optimized. The device realizes the chemical composition detection of aerosol made in laboratory.
1996-2002 Professor Zheng, Ph.D. student, State Key Laboratory of Solid Surface Physical Chemistry, Department of Chemistry, Xiamen University.
1996-2002 The collision-induced dissociation mass spectra of various clusters were studied on a tandem time-of-flight mass spectrometer. Clusters of interest include transition metal carbonyl compounds and carbon-sulfur binary clusters.
From 65438 to 0998-2002, the ab initio calculation and density overtone of carbon-sulfur binary clusters were studied.
The dynamic mechanism of cluster formation and dissociation was studied by mathematical method.
The clathrate compound 1996- 1999 similar to metal car was prepared by a new method of laser sputtering heterogeneous system, and the physical and chemical properties of the product were characterized by tem, XPS, GC-MS, XRD and HPLC.
Participate in research projects
Element composition (EPA) fund for new nuclear particles.
Chemistry and physics of atomic clusters: a major project of the National Natural Science Foundation of China
Science Fund for Outstanding Young Scholars in Atomic Cluster Science