• Nisha Verma
• Dr. Ningombam Linthoingambi Devi

The mass concentration of PM10 and PM2.5 have been carried out at seven locations in Bihar, viz., Aurangabad, Gaya, Patna, Muzaffarpur, Samastipur, Sonpur, and Hajipur. PM10 and PM2.5 have been collected by High Volume Sampler (APM 550), respectively. The 24-hour average concentrations of PM10 for all seven studied sites varied between 125.85 to 213.90 μg/m3. Among them, the highest concentration was observed at Muzaffarpur with an average of 213.90 μg/m3 followed by Samastipur having an average mass concentration of 210.38 μg/m3. Patna ranked third among all with an average concentration of 203.64 μg/m3. In comparison, the 24-hour average concentrations of PM2.5 are between 107.28 to 167.82 μg/m3. Among them, the highest concentration was observed at Hajipur with an average of 167.82 μg/m3 followed by Muzaffarpur having an average mass concentration of 164.41 μg/m3. Sonpur ranked third among all with an average concentration of 161.27 μg/m3. The average PM2.5/PM10 indicates that about 76% to 90% of the PM10 was made of PM2.5 in the cities and the coarse particle; PM10-2.5/PM10 (aerodynamic diameter from 2.5 to 10 μm) accounted for 14–28% of PM10. The relationship between PM10 and PM2.5 during the study period of Bihar (all areas combined) exhibits a high degree of correlation (r = 0.86).

Particulate matter, Air pollution, Vehicular pollution, Coarse particles, Fine particles

"Correlation and concentration trends of PM10 and PM2.5 in Bihar, India during the winter season", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 6, page no.K1-K9, June-2024, Available :http://www.jetir.org/papers/JETIR2406A01.pdf

"Correlation and concentration trends of PM10 and PM2.5 in Bihar, India during the winter season", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 6, page no. ppK1-K9, June-2024, Available at : http://www.jetir.org/papers/JETIR2406A01.pdf