390
K. M. G. Mostofa et al.
Table 1 Changes in the specific absorbance coefficients of CDOM at different wavelength ranges by photoinduced degrdation on natural waters
Samples
Incubation time
Changes in the specific absorbance coefficients (SAC) at different
wavelenths (%)
References
(h or days)
Photoinduced
degradation
Microbial
degradation
Rivers
(Mostofa KMG et al. unpublished data )
Upstream waters (Kago, Japan) at 340–350 nm
13
−(77–79)
+(20–22)
(Mostofa KMG et al. unpublished data )
Upstream waters (Kago, Japan) at 444–700 nm
13
−100
+(19–38)
(Mostofa KMG et al. unpublished data )
Upstream waters (Nishi-Mataya, Japan) at 340–350 nm 13
−(93–97)
+(78–81)
(Mostofa KMG et al. unpublished data )
Upstream waters (Nishi-Mataya, Japan) at 366–700 nm 13
−100
+(4–25)
(Mostofa KMG et al. unpublished data ).
Downstream waters (Yasu River, Japan) at 340–350 nm 13
−(58–59)
−(6–7)
(Mostofa KMG et al. unpublished data )
Downstream waters (Yasu River, Japan) at 600–700 nm 13
−(14–45)
+(8–49)
(Mostofa KMG et al. unpublished data ).
Lakes
Lake Taihu, China at 355 nm
12
−30
nd
Zhang et al. (2009b)
Lake Taihu, China at 280 nm
12
−21
nd
Zhang et al. (2009b)
Lake Taihu, China at 280 nm
2–12 h (UV)
−(8–19)
nd
Zhang et al. (2009b)
Lake Erie water (42
◦ N) at 340 nm
13
−(75–76)
−(12–32)
Winter et al. (2007)
Luther Marsh northeast water (43
◦ N) at 340 nm
13
−(61–63)
+ (2–3)
Winter et al. (2007)
Mill Creek east of Cambridge water (43
◦ N) at 340 nm
13
−(56–72)
−1, + 2
Winter et al. (2007)
Bannister Lake southwest of Cambridge water (43
◦ N) at
340 nm
13
−(55–62)
+3, −3
Winter et al. (2007)
Sanctuary Pond water (41
◦ N) at 340 nm
13
−(64–74)
+3, −4
Winter et al. (2007)
Aldrich humic acid in deionized water at 340 nm
13
−(42–47)
+(2–12)
Winter et al. (2007)
Estuaries and oceans
Satilla Estuary (Georgia, USA) at 350 nm
70
−(59–64)
−(2–4)
Moran et al. (2000)
Satilla Estuary (Georgia, USA) at 350 nm
70
−(50–53)
+0.6, −7
Moran et al. (2000)
Satilla Estuary (Georgia, USA) at 250–500 nm
51
nd
−(4–11)
Moran et al. (2000)
Antarctic sea ice and oceanic water at 375 nm
120 h
−30
nd
Norman et al. (2011)
Antarctic sea ice and oceanic water at 330 nm
121 h
−58
nd
Norman et al. (2011)
Antarctic sea ice and oceanic water at 280 nm
122 h
−53
nd
Norman et al. (2011)
Irradiation time-hours (h) mentioned with each time as ‘h’ and ‘days’ mentioned as a whole digit only
nd
Not detected
K. M. G. Mostofa et al.
Table 1 Changes in the specific absorbance coefficients of CDOM at different wavelength ranges by photoinduced degrdation on natural waters
Samples
Incubation time
Changes in the specific absorbance coefficients (SAC) at different
wavelenths (%)
References
(h or days)
Photoinduced
degradation
Microbial
degradation
Rivers
(Mostofa KMG et al. unpublished data )
Upstream waters (Kago, Japan) at 340–350 nm
13
−(77–79)
+(20–22)
(Mostofa KMG et al. unpublished data )
Upstream waters (Kago, Japan) at 444–700 nm
13
−100
+(19–38)
(Mostofa KMG et al. unpublished data )
Upstream waters (Nishi-Mataya, Japan) at 340–350 nm 13
−(93–97)
+(78–81)
(Mostofa KMG et al. unpublished data )
Upstream waters (Nishi-Mataya, Japan) at 366–700 nm 13
−100
+(4–25)
(Mostofa KMG et al. unpublished data ).
Downstream waters (Yasu River, Japan) at 340–350 nm 13
−(58–59)
−(6–7)
(Mostofa KMG et al. unpublished data )
Downstream waters (Yasu River, Japan) at 600–700 nm 13
−(14–45)
+(8–49)
(Mostofa KMG et al. unpublished data ).
Lakes
Lake Taihu, China at 355 nm
12
−30
nd
Zhang et al. (2009b)
Lake Taihu, China at 280 nm
12
−21
nd
Zhang et al. (2009b)
Lake Taihu, China at 280 nm
2–12 h (UV)
−(8–19)
nd
Zhang et al. (2009b)
Lake Erie water (42
◦ N) at 340 nm
13
−(75–76)
−(12–32)
Winter et al. (2007)
Luther Marsh northeast water (43
◦ N) at 340 nm
13
−(61–63)
+ (2–3)
Winter et al. (2007)
Mill Creek east of Cambridge water (43
◦ N) at 340 nm
13
−(56–72)
−1, + 2
Winter et al. (2007)
Bannister Lake southwest of Cambridge water (43
◦ N) at
340 nm
13
−(55–62)
+3, −3
Winter et al. (2007)
Sanctuary Pond water (41
◦ N) at 340 nm
13
−(64–74)
+3, −4
Winter et al. (2007)
Aldrich humic acid in deionized water at 340 nm
13
−(42–47)
+(2–12)
Winter et al. (2007)
Estuaries and oceans
Satilla Estuary (Georgia, USA) at 350 nm
70
−(59–64)
−(2–4)
Moran et al. (2000)
Satilla Estuary (Georgia, USA) at 350 nm
70
−(50–53)
+0.6, −7
Moran et al. (2000)
Satilla Estuary (Georgia, USA) at 250–500 nm
51
nd
−(4–11)
Moran et al. (2000)
Antarctic sea ice and oceanic water at 375 nm
120 h
−30
nd
Norman et al. (2011)
Antarctic sea ice and oceanic water at 330 nm
121 h
−58
nd
Norman et al. (2011)
Antarctic sea ice and oceanic water at 280 nm
122 h
−53
nd
Norman et al. (2011)
Irradiation time-hours (h) mentioned with each time as ‘h’ and ‘days’ mentioned as a whole digit only
nd
Not detected