12
Particulate Organic Carbon
(
POC) content of challenge water during uptake. Ambient describes
natural conditions of water in the Port of Baltimore. Control and treated show levels in test
waters from time-integrated samples collected through the entire uptake, after the mixture of
Arizona Test Dust, micronized humate and instant
ice tea was added to water prior to the split in
control and treated lines.
Mean (mg/l)
SD
Ambient
4.5
0.03
Control
7.0
0.04
Treated
5.6
0.17
Percent UV Transmittance
(
UVT) at 254 nm for challenge water during uptake and discharge.
Ambient describes natural conditions of water in the Port of Baltimore and T0, T1, and T2 for
challenge water are %UVT values from three sample time points (beginning, middle, and end of
uptake) after the mixture of Arizona Test Dust, micronized humate and instant
ice tea was added.
Mean %UVT
SD
Ambient
81.6
0.23
T0 challenge water
69.5
0.40
T1 challenge water
68.6
0.40
T2 challenge water
67.6
0.44
Discharge
Control Mean
%
UVT
SD
Treated
Mean %UVT
SD
T0 challenge water
N/A
N/A
77.4
0.06
T1 challenge water
71.7
0.15
77.2
0.12
T2 challenge water
71.8
0.20
77.1
0.45
Active Chlorophyll –
Control and treated show chlorophyll levels in test waters from time-
integrated samples collected through the entire uptake and discharge.
Uptake
Mean (µg/l)
Uptake
SD
Discharge
Mean (µg/l)
Discharge
SD
Control
76.1
1.23
3.4
0.09
Treated
43.1
1.12
0.6
0.02