Can the Indian national ambient air quality standard protect against the hazardous constituents of PM2.5?

Year-long evaluation of aerosol chemistry and meteorological implications of PM2.5 in an urban area of the Brahmaputra Valley, India

“…The OC concentration of the backup lter was used for artefact correction of the OC concentration of the front lter. The OC artefact was corrected using the following equation 33 OC artifact corrected = OC QF + OC QBQ − 2OC bQF (5) where, OC QF is the quartz front lter OC, OC QBQ is the quartz behind quartz lter OC, and OC bQF is the eld blank OC from the quartz front lter.…”

“…4 Lenient emission standards with poor regulation and increasing anthropogenic activities aggravate particulate pollution in India. 5…”

“…4 Lenient emission standards with poor regulation and increasing anthropogenic activities aggravate particulate pollution in India. 5 In general, water-soluble inorganic ions (WSIs), carbonaceous matter, and inorganic/metal elements are the main chemical compositions of PM 2.5 with variations in concentrations. In Delhi, the capital city of India, the PM 2.5 mass was reported to be mainly composed of WSIs (∼42%), total carbon (∼22%), and major and trace elements (∼22%).…”