STUDY ON THE HEALTH IMPACT FROM USING BEEHIVE COAL STOVES IN HOUSEHOLDS IN HOAN KIEM, HANOI
The combustion of biomass and coal significantly contributes to the total health burden due to the emission of gaseous pollutants and particulate matter. To determine the personal exposure related to beehive coal stove cooking in Hanoi, an assessment study on 120 females in three wards (Tran Hung Dao, Phuc Tan and Chuong Duong) were conducted. Personal and ambient concentration of PM2.5 and CO (upwind, near source, far source) were simultaneously measured twice a day at each household by PATS++ equipment developed by Berkeley Air Monitoring group. The concentrations of PM2.5 in three wards were in range of 10-186, 12-441, 9-59, 3-271, and 9-260 µg/m3 while those of CO varied from 100-3000, 300-260000, 200-29000, 300-255000, and 2000-36000 µg/m3, for upwind, near source, far source, indirect exposure and direct exposure samples, respectively. The estimated COHb% for direct exposed group was higher than indirect exposed group in the three wards. Consequently, directly exposed group was suffering a higher risk. All directly exposed respondents and 75% of indirectly ones were experienced COHb% calculated in blood exceeding safe threshold for health of WHO guidelines. There has been increased risk for both exposed group if the coal beehive stove placed indoor. The calculated levels of incremental life cancer risk (ILCR) posed by PM2.5 in the three wards ranged from 1.6E-06 to 3.8E-06 daily, indicating moderate cancer risk to community that should be study further to protect public health.