Shaw-Tao Lin

  • Citations Per Year
Learn More
The polycyclic aromatic hydrocarbon emissions in particulate and gas phases generated from smoldering mosquito coils containing various atomic H/C ratios were examined. Five types of mosquito coils were burned in a test chamber with a total airflow rate of 8.0 L/min at a constant relative humidity and temperature. The concentrations of individual PAHs were(More)
The electron ionization (EI) fragmentation of nitro-beta,beta-dihalostyrenes depends strongly on the specific halogens present as well as on the position of the nitro group. Beta,beta-difluorostyrenes yielded mainly fluoroacetylene ions as the base peaks and o-nitro-beta,beta-dihalostyrene possibly furnished the ion with a structure similar to that of(More)
Density functional theory (DFT) quantum chemical calculations of the structure and NMR parameters for highly strained hydrocarbon [2.2]paracyclophane 1 and its three derivatives are presented. The calculated NMR parameters are compared with the experimental ones. By least-squares fitting of the (1)H spectra, almost all J(HH) coupling constants could be(More)
Hexahydro[2.2]paracyclophane (6) and related compounds were prepared from the extrusion of sulfur dioxide from 2,11-dithia-4,5,6,7,8,9-hexahydro[3.3]paracyclophane 2,2,11,11-tetraoxide (9) by either the Ramberg-Backlund reaction or a flash pyrolysis. Compound 6 is the first cyclophane to contain both a benzene ring and a cyclohexane ring. Birch reduction of(More)
The electron ionization (EI) mass spectra of a series of 3,3-difluoro-1-halo-2-arylcyclo- propenes (1, 2) give the fragments [M-X](+) (X: Br, Cl) as the base peaks. A comparison of tandem mass spectrometry (MS/MS) profiles of the m/z 151 ions recorded from compounds 1 and 2 and 3-bromo-3,3-difluoro-1-phenylcyclopropyne (5), 1,1,2,2-tetrafluoro-3-phenyl-(More)
Polycyclic aromatic hydrocarbons in the particulate phase generated from burning various incense was investigated by a gas chromatography/mass spectrometry. Among the used incenses, the atomic H/C ratio ranged from 0.51 to 1.69, yielding the emission factor ranges for total particulate mass and PAHs of 4.19-82.16 mg/g and 1.20-9.50 μg/g, respectively. The(More)
The disinfection of hospital wastewaters using the ozonization process was studied. The concentrations of ozone required to reach a sudden drop of coliform and Pseudomonas aeruginosa in the wastewater are 4.0-7.0 and 3.0-5.0 mg L(-1), respectively. For the hospital wastewater, the disinfection efficiencies were 0.518S(-1.1) for coliforms, 0.509S(-1.06) for(More)
  • 1