| |
|---|---|
 (550Kb)
|
| Iwao Uchiyama | |
| Director, | |
| Department of Occupational Health, | |
| National Institute of Public Health, | |
| Ministry of Health and Welfare, Japan | |
| 4-6-1 Shirokanedai Minato-ku Tokyo 108-0071, Japan | |
| Tel: +81-3-3441-7111 Fax: +81-3-3446-6638 | |
| E-mail: iwao@iph.go.jp |
30,776,000 Yen
(FY 1999; 10,051,000 Yen)
Chongqing city is known for the worst air pollution area in China, especially sulfur dioxides and suspended particulate matter. There are many respiratory diseases in the residents. We estimated the level of air pollutants (indoor and outdoor), and carried out physical check of the 81 families in bio-briquette group and 95 families in control group before and nine months after the start of using bio-briquette. The indoor level of SO2 during using the bio-briquette decreased one of fifth compared with using of raw coal. The rate of adult female with positive nasal pharynx findings of the bio-briquette group sufficiently decreased after the using of bio-briquette compared with that of the control group. That of children of bio-briquette group was also tend to decrease.
bio-briquette, sulfur dioxide, air pollution, indoor pollution, health effects