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Sci Total Environ. 2017 Sep 1;593-594:368-374. doi: 10.1016/j.scitotenv.2017.03.162. Epub 2017 Mar 27.

Occurrence, temporal variation, and estrogenic burden of five parabens in sewage sludge collected across the United States.

Author information

1
Biodesign Center for Environmental Security, Biodesign Institute, School of Sustainable Engineering and the Built Environment, Arizona State University, 781 E. Terrace Mall, Tempe, AZ 85287, United States.
2
School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11794-5000, United States.
3
Chemistry Department, Colorado State University-Pueblo, 2200 Bonforte Blvd., Pueblo, CO 81001, United States.
4
U.S. Geological Survey, Denver Federal Center, P.O. Box 25585, Denver, CO 80225, United States.
5
U.S. Geological Survey, 400 S. Clinton Street, Iowa City, IA 52240, United States.
6
Biodesign Center for Environmental Security, Biodesign Institute, School of Sustainable Engineering and the Built Environment, Arizona State University, 781 E. Terrace Mall, Tempe, AZ 85287, United States. Electronic address: rolf.halden@asu.edu.

Abstract

Five parabens used as preservatives in pharmaceuticals and personal care products (PPCPs) were measured in sewage sludges collected at 14 U.S. wastewater treatment plants (WWTPs) located in nine states. Detected concentration ranges (ng/g, dry weight) and frequencies were as follows: methyl paraben (15.9 to 203.0; 100%), propyl paraben (0.5 to 7.7; 100%), ethyl paraben (<0.6 to 2.6; 63%), butyl paraben (<0.4 to 4.3; 42%) and benzyl paraben (<0.4 to 3.3; 26%). The estrogenicity inherent to the sum of parabens detected in sewage sludge (ranging from 10.1 to 500.1pg/kg 17β-estradiol equivalents) was insignificant when compared to the 106-times higher value calculated for natural estrogens reported in the literature to occur in sewage sludge. Temporal monitoring at one WWTP provided insights into temporal and seasonal variations in paraben concentrations. This is the first report on the occurrence of five parabens in sewage sludges from across the U.S., and internationally, the first on temporal variations of paraben levels in sewage sludge. Study results will help to inform the risk assessment of sewage sludge destined for land application (biosolids).

KEYWORDS:

Estrogenic potential; Paraben; Sludge; Wastewater treatment plants (WWTPs)

PMID:
28346910
PMCID:
PMC5510738
DOI:
10.1016/j.scitotenv.2017.03.162
[Indexed for MEDLINE]
Free PMC Article

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