Table 2.

B[a]P levels in indoor air.

Location	Concentration	Reference
North China kitchens, indoor air	14.3 ± 23.0 ng/m3 (gaseous phase)	[29]
	6.7 ± 17.4 ng/m3 (particulate phase)
China Yucheng City kitchens, indoor air	25.8 ± 10.6 ng/m3 (oil-based cooking)	[30]
	7.3 ± 4.6 ng/m3 (water-based cooking)
Tibet Jokhang Temple, indoor air	18.5 ± 4.3 ng/m3	[31]
China Shanxi Provence schools, indoor air	0.05 ng/m3 (nonheating season)	[32]
	10.3 ng/m3 (heating season)
Saudi Arabia, Jeddah’s schools, indoor air	163.87 ± 68.53 ng/m3	[33]
Poland, Silesia kindergartens, indoor air	3.7 ± 0.8 ng/m3	[34]
India, Shimoga, iron foundry	7.20 ± 1.11 μg/m3 (melting section) 45.37 µg/m3 (molding section)	[35]
Sweden, Aluminum manufacturing factories	14 μg/m3	[36]
United Kingdom, Coke oven facilities	3.3 μg/m3	[37]