| Author | Isares Lertvisansak |
| Call Number | AIT Thesis no.EV-96-14 |
| Subject(s) | Waste gases
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Science |
| Publisher | Asian Institute of Technology |
| Abstract | Benzene in exhaust gas was measured from 12 used cars. The exhaust gas from car
was studied to determine the correlation between benzene concentration versus mileage, and
model year. The charcoal tubes were used to collect the sample of exhaust gas. Samples were
collected from the car under two conditions, one was collected on chassis dynamometer and
the other was collected at idle mode.
There was a modest increase in benzene emission with older model year but there
was not found the correlation with the mileage. The maximum benzene emission was found to
be 28.68 mg/m3 from Toyota model year 1990. The lowest level of benzene emission was
found in 3 new cars (1 Toyota and 2 Nissan) with installation of catalytic conve1ter. The
average benzene concentration of exhaust gas from Toyota, Nissan and Mitsubishi are 0-17.4,
0-22.02 and 0.76-18.26 mg/m3 respectively. The concentrations of benzene from old model
car (1990-1992) were 4.4-22.02 mg/m3 while the same for new model car were 0-4 .14 mg/m3
.
The results of benzene emission when the car was performed on chassis dynamometer were
calculated from total hydrocarbon (THC) and benzene concentration was estimated to be 3 %
of THC.
From the result it was found that the impact of benzene in exhaust gas on human
health was reached the chronic toxicity level. |
| Year | 1996 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Samorn Muttamara; |
| Examination Committee(s) | Annachhatre, Ajit P.;Visvanathan, C.; |
| Scholarship Donor(s) | The Electricity Generating Authority of Thailand (EGAT); |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1996 |