Table 1.

Experimental conditions and concentrations of triclosan and dioxins in the transformation study of triclosan in seawater matrix in the presence of active chlorine.

Triclosan conc.a (μg/mL)	Active chlorine conc. (μg/mL)	Condition of light	Duration	Results of sample analysis (n = 3)
				Triclosan Conc. (ng/mL)	2,8- DCDD (pg/mL)	1,2,8- TrCDD (pg/mL)	2,3,7- TrCDD (pg/mL)	2,3,7,8- TeCDD (pg/mL)	1,2,3,8- TeCDD (pg/mL)
0.2	2.0	Darkb	0 min	200	Trace	NDh	ND	ND	ND
	2.0	Dark	60 min	83.6 ± 13.2	Trace	ND	ND	ND	ND
	2.0	Dark	120 min	44.7 ± 5.7	Trace	ND	ND	ND	ND
	2.0	Dark	240 min	27.3 ± 2.6	2.2 ± 0.2	ND	ND	ND	ND
	2.0	Dark	960 min	3.10 ± 0.4	6.3 ± 0.6	ND	ND	ND	ND
	2.0	Dark	2days	1.70 ± 0.2	8.6 ± 1.4	3.3 ± 0.2	2.4 ± 0.4	ND	ND
	2.0	Dark	8 days	0.62 ± 0.05	9.3 ± 1.8	6.8 ± 1.2	4.2 ± 0.3	ND	ND
	2.0	Dark	32 days	0.38 ± 0.02	13.5 ± 1.4	8.9 ± 0.8	7.8 ± 1.2	ND	3.3 ± 0.2
	2.0	Dark	64 days	0.13 ± 0.01	21.4 ± 0.6	15.2 ± 1.8	13.5 ± 1.5	ND	12.2 ± 2.3
0.2	2.0	365nm	0 min	200	Trace	ND	ND	ND	ND
	2.0	365nm	60 min	23.4 ± 5.6	177.1 ± 12.5	358.6 ± 43.2	287.9 ± 18.7	ND	ND
	2.0	365nm	120 min	17.3 ± 3.4	274.7 ± 23.6	469.3 ± 23.6	382.6 ± 23.5	2.3 ± 0.2	4.5 ± 0.9
	2.0	365nm	240 min	3.2 ± 0.8	124.8 ± 11.3	541.8 ± 56.4	693.5 ± 45.7	7.6 ± 1.5	10.5 ± 2.4
	2.0	365nm	960 min	1.4 ± 0.2	106.3 ± 0.9	664.5 ± 78.3	1404 ± 134	15.3 ± 3.1	21.3 ± 4.6
2.0	20	365nm	0 min	2000	8.9 ± 1.2	ND	ND	ND	ND
	20	365nm	60 min	183.1 ± 30.2	832.4 ± 98.3	1623 ± 45.6	1312 ± 98.3	30.5 ± 3.2	23.5 ± 4.2
	20	365nm	120 min	107.5 ± 12.5	1271.3 ± 87.6	2226 ± 129	2146 ± 340	61.4 ± 5.6	46.5 ± 8.3
	20	365nm	240 min	20.3 ± 3.3	550 ± 43.5	2515 ± 231	3205 ± 357	82.7 ± 9.7	63.1 ± 11.2
	20	365nm	960 min	7.5 ± 0.9	480 ± 67.3	3038 ± 187	6489 ± 569	101 ± 13.3	76.2 ± 6.5

^aTotal volume is 500 ml. ^bGlass bottles were wrapped with aluminum foil.