Table 1. Published literature on the degradation half-life experiments in seawater.

Herbicide	Half-life (days)	Initial conc.(μg l-1)	Light	Temperature	Water filtration	Reference
Diuron	No degradation for 42 d	1000	Light	15°C	unfiltered	[24]
Atrazine	SL = 79	5000	SL SD	20°C	unfiltered	[21]
	SD = 206
Atrazine	S = 79	5000	Light	S = 20°C	unfiltered	[20]
	ST = 65			ST = 40°C
Atrazine	No degradation for 20 d	20	Light	20°C	filtered 0.45μm and unfiltered	[23]
Atrazine	S = 56	~8500	Light	22°C	unfiltered	[36]
Simazine	SL = 29	5000	SL SD	20°C	unfiltered	[21]
	SD = 49
Simazine	S = 29	5000	Light	S = 20°C	unfiltered	[20]
	ST = 28			ST = 40°C
Simazine	No degradation for 20 d	20	Light	20°C	filtered 0.45um and unfiltered	[23]
2,4-D	SL = 11.1	2000	SLSD	20°C	unfiltered	[37]
	SD = 31.2
Glyphosate	D25 = 267	10	Dark	25°C	20 μm filtered	[29]
	D31 = 315		Dark	31°C
	L25 = 47		Light	25°C

SL = seawater light, SD = seawater dark, S = seawater, ST = seawater at elevated temperature.