Biomass Combustion and Indoor Air Pollution in Tanzania

80% of families in Foo Village, Hai District Tanzania use simple "three stones stoves" (wood fires stoves), normal charcoal stoves, improve charcoal stove, improved wood stove and kerosene stoves. Aabout 77.8 % house wives time is spent in the indoor environment. Using additive risk model analysis, hourly indoor concentration is PM10 during cooking period and ranges from 1931 mg/m3 to 4949 mg/m3, which exceeds that of WHO recommended value of 150mg/m3 for 24 hours. The Coborn Dioxide concentrations during cooking period exceeds the standard of 30 mg/m3 in about 94.6 % of the sampling points. The overall average concentration of Coborn Dioxide was 268 198 mg/m3. Respiratory symptoms increase with increase in PM10 concentration from 1931 to 2177 g/m3. Symptoms like tearing shed, headache, cough symptoms and shortness of breath are highly correlated with concentration of PM10 with correlation coefficient of 0.735, 0.755, 0.769 and 0.911 respectively. Others like wheezing, headache, cough, and chronic bronchitis are highly correlated with concentration of CO by 0.533, 0.467, 0.415 and 0.495 respectively.