HOUSE HOLD LOCATION, VENTILATION AND OCCUPANCY PATTERN INFLUENCING THE PM LEVEL, AS AIR POLLUTION MAY BE HIGHER INSIDE HOME THAN OUTDOORS, REQUIRED SPECIFIC

Study made on air pollution reveals that people may be exposed to unhealthy levels of airborne pollutants inside their homes, even if the outdoor quality is good. Researchers at the university level used their low cost sensors and innovative techniques over a two weeks period to prepare particulate matter in three homes. They discovered that pollution levels in each house were higher and more variable than outdoor levels. The researchers found significant differences in PM levels between the three houses with one home exceeding the World Health Organization (WHO) 24-hour PM 2.5 limit on nine days. This highlights the importance of monitoring indoor quality at a house hold specific level. The study further stated that the need to monitor indoor air pollution, as people can have unhealthy air at home, even if outdoor air is good. PM levels varied significantly between homes, indicating that monitoring just one location is not enough. Experts used non - negative matrix factorisation to model indoor PM levels. Using low cost censors enable them to build a detailed picture of pollutant levels. Factors such as house hold location, ventilation and occupancy patterns influenced the particle levels. It identified five factors contributing to PM in door spaces-two relating to indoor activities, like increased movement by residents and three linked to external factors like nearby existing kitchen and toilets and space used for the such activities, nearby to the specific level must required to be maintained for the quality specific level. Larger particles PM 10 settle faster compared to smaller ones, as such it is necessary to verify the factors of safety measure and obtain the specific level of required PM level.