In-use emissions from biomass and LPG stoves measured during a large, multi-year cookstove intervention study in rural India

We conducted an emission measurement campaign as a part of multiyear cookstove intervention trial in two rural locations northern and southern India. 253 uncontrolled cooking tests measured emissions control households during three ~3-month-long periods each location. pollutants including fine particulate matter (PM2.5), organic elemental carbon (OC, EC), black (BC) monoxide (CO) from stoves ranging traditional solid fuel (TSF) to improved biomass (rocket, gasifier) liquefied petroleum gas (LPG) models. TSF showed substantial variability pollutant factors (EFs; g kg?1 wood) optical properties across periods. Multilinear regression modeling found that period, properties, relative humidity, duration are significant predictors EFs. A rocket stove moderate reductions TSF. LPG had the lowest EFs, with mean PM2.5 CO EFs (g MJdelivered?1) >90% lower than stoves. However, in-home were substantially higher lab likely influenced by non-ideal combustion performance, food possible influence other sources. In-home measurements may depict actual exposure benefits associated dissemination real world interventions.