Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1216, Issue 24, Pages 4923-4926Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2009.04.019
Keywords
Sewage sludge; Steroid estrogens; Removal; Modeling
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Optimization of an analytical method for determination of steroid estrogens, through minimizing sample size, resulted in recoveries >84%, with relative standard deviations <3% and demonstrated the significance of sample size on method performance. Limits of detection were 2.1-5.3 ng/g. Primary Sludges had estrogen concentrations Of Up to one order of magnitude less than those found in biological sludges (up to 994 ng/g). However, partition coefficients were higher in primary sludges (except estriol), with the most hydrophobic compound (ethinylestradiol) exhibiting the highest Kp value, information which may be of Value to those involved in modeling removal during wastewater treatment. (C) 2009 Elsevier B.V. All rights reserved.
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