Effects of Different Water Seasons on the Residual Characteristics and Ecological Risk of Polycyclic Aromatic Hydrocarbons in Sediments from Changdang Lake, China

Table 1

Environmental parameters measured in Changdang Lake during the study period.

Sampling sites		T			DO			COND			ORP			pH
		°C			mg/L			µs/cm			mv
	March	June	Sep	March	June	Sep	March	June	Sep	March	June	Sep	March	June	Sep
#1	13.2	29.1	23.5	3.7	5.7	4.4	363.0	287.0	279.0	56.0	104.0	93.0	8.8	8.3	7.6
#2	14.7	28.8	25.5	4.1	8.6	4.7	326.0	290.0	468.0	63.0	85.0	77.0	8.9	8.8	7.9
#3	13.6	27.8	22.8	3.8	7.9	6.3	389.0	316.0	480.0	67.0	89.0	75.0	8.8	8.8	8.4
#4	13.1	27.5	23.1	6.8	6.0	5.5	336.0	316.0	422.0	73.0	120.0	90.0	8.7	8.5	8.2
#5	13.2	28	24.5	7.3	7.9	5.4	360.0	242.0	460.0	65.0	95.0	95.0	8.7	8.9	8.5
#6	14.2	26.2	23.4	7.0	5.8	5.4	378.0	197.0	487.0	62.0	181.0	92.0	8.7	7.7	8.4
Mean	13.7	27.9	23.8	5.4	7.0	5.3	358.7	274.6	432.6	64.3	112.3	87	8.8	8.5	8.2