TABLE 1.

Comparison of parent PAH isomer ratios from this study and the literature reported values. The six ratios listed are often used for source apportionment. The results are shown as means and standard deviations.

Ratio	Fuel	crop residue	crop residue	crop residue	crop residue	wood	coal
	Source	stove	stove	chamber	open-fire	stove	stove
	Ref.	this study	29–30	4, 7, 13, 31	19–21	25, 29, 32–33	29, 34–35
ANT/(ANT+PHE)		0.12±0.01	0.2	0.18–0.25	0.17–0.25	0.10–0.30	0.13–0.58
FLA/(FLA+PYR)		0.53±0.03	0.51–0.80	0.50–0.53	0.34–0.53	0.43–0.74	0.32–0.70
BaA/(BaA+CHR)		0.48±0.02	0.46	0.46–0.53	0.39–0.50	0.39–0.56	0.27–0.56
IcdP/(IcdP+BghiP)		0.54±0.02	0.31–0.50	0.46–0.52	0.39–0.94	0.16–0.69	0.23–0.63
BbF/(BbF+BkF)		0.55±0.03	0.50–0.65	0.28–0.41	0.35–0.80	0.35–0.51	0.60–0.89
BaP/(BaP+BghiP)		0.60±0.05	0.23–0.67	0.56–0.83	0.43–0.98	0.38–0.78	0.35–0.69