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Table 3 Mean CO₂ production rates (µg h g⁻¹) in the phenanthrene and 3-ring N-PAHs amended soils with glucose addition over time

From: Assessment of the effects of phenanthrene and its nitrogen heterocyclic analogues on microbial activity in soil

Chemical	Time (d)	Concentrations (mg kg⁻¹)
Chemical	Time (d)	0	10	100	250	500
Phenanthrene	0	12.50 ± 0.50	13.70 ± 0.50	10.50 ± 0.80	10.70 ± 0.10	10.20 ± 0.10
	30	20.20 ± 1.00	21.50 ± 1.70	19.20 ± 1.40	15.90 ± 0.70	13.20 ± 0.70
	60	18.60 ± 0.80	21.60 ± 1.10	16.30 ± 0.60	14.30 ± 0.60	11.70 ± 0.30
	90	16.60 ± 0.30	18.30 ± 0.30	14.60 ± 0.50	12.80 ± 0.10	11.10 ± 0.60
1,7-Phenanathroline	0	12.40 ± 0.20	17.60 ± 0.40	16.20 ± 0.40	15.70 ± 0.40	14.90 ± 0.30
	30	2.70 ± 0.30	2.50 ± 0.20	2.60 ± 0.20	3.30 ± 0.40	15.20 ± 2.60
	60	39.10 ± 6.00	42.70 ± 6.00	46.00 ± 2.60	47.10 ± 4.60	12.60 ± 0.80
	90	41.40 ± 6.70	35.50 ± 2.80	38.20 ± 1.90	40.30 ± 3.80	11.40 ± 0.10
Benzo[h]quinoline	0	12.40 ± 0.20	12.60 ± 0.30	12.10 ± 0.10	11.20 ± 0.20	10.70 ± 0.10
	30	2.70 ± 0.30	2.50 ± 0.10	2.60 ± 0.10	2.50 ± 0.10	3.50 ± 0.20
	60	39.10 ± 6.0	60.70 ± 4.10	39.70 ± 0.30	38.20 ± 5.90	21.60 ± 1.50
	90	41.40 ± 6.70	49.80 ± 2.30	29.50 ± 1.30	30.50 ± 2.80	18.30 ± 1.30
4,7-Phenanthroline	0	12.50 ± 0.50	15.50 ± 0.40	14.70 ± 0.30	14.30 ± 0.20	13.50 ± 0.60
	30	10.80 ± 0.10	32.70 ± 0.10	28.60 ± 1.00	29.30 ± 0.50	34.20 ± 0.30
	60	8.30 ± 0.60	26.10 ± 0.50	21.60 ± 0.40	24.20 ± 0.40	28.50 ± 0.20
	90	8.10 ± 0.30	20.60 ± 0.40	17.90 ± 1.20	21.40 ± 0.30	21.30 ± 0.40

Data shows different concentrations (mg kg⁻¹) and incubation days, respectively

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