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EC number: 915-730-3
CAS number: -
Kd was derived from measurements in 60 paired samples of sludge and
effluent in 18 sewage treatment plants in southern and northern Europe.
The sampling procedure and analyses were carried out with a high level
of quality control and the variation due to analytical error was low.
The ratio between the concentration in effluent and the concentration in
sludge, expressed as the log Kd-value is fairly constant for all the
data of this monitoring study. 80% of the values is between 3.2 and
3.75, which is on a linear scale only a factor of 3.5. When all log
Kd-values are considered together the extreme values for OTNE varied
between 2.98 and 4.18 which on a linear scale represents a factor of 16.
The mean Kd-value was used to estimate log Koc, using the mean fraction
of organic carbon in the sludge, resulting in log Koc = 4.12.
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