2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 10:00 AM - 10:15 AM | DETECTION OF ESTROGENIC HORMONES AND UV-FILTERS IN VIRILE CRAYFISH (ORCONECTES VIRILIS) IN URBAN STREAMS NEAR BALTIMORE, MARYLAND | 410 B
DETECTION OF ESTROGENIC HORMONES AND UV-FILTERS IN VIRILE CRAYFISH (ORCONECTES VIRILIS) IN URBAN STREAMS NEAR BALTIMORE, MARYLAND
Ultraviolet-filters (UV-filters) in sunscreens and estrogenic hormones are endocrine-disrupting chemicals (EDCs) that have attracted increased attention as contaminants of emerging concern (CECs) due to their widespread occurrence in aquatic ecosystems. However, little is known about the bioaccumulation of these CECs in aquatic biota. The objective of this study was to measure five UV-filters and three estrogenic hormones in crayfish tissue to better understand CEC occurrence in urban streams. We collected virile crayfish (Orconectes virilis) from six sites in urban streams near Baltimore, Maryland using a backpack electrofisher. By applying a novel extraction procedure and liquid chromatography tandem mass spectrometry analysis, we simultaneously detected 6 CECs in crayfish tissue. The 4-methylbenzylidene camphor (75–352 ng/g), octocrylene (3–113 ng/g), and homosalate (78–263 ng/g) UV-filters were present in all crayfish samples. In addition, the UV-filters, benzophenone-3 and ethylhexylmethoxycinnamate were detected at concentrations as high as 51 and 83 ng/g, respectively. The synthetic estrogen, 17a-ethinylestradiol, was also present in crayfish tissue at one site at concentrations of 17 ng/g. Ultimately, these findings confirm that invertebrates living in urban streams accumulate CECs in their tissue, raising new concerns for aquatic species.
- Bioindicators
- Urban
- Water Quality
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Presenters/Authors
Ke He
(), University of Maryland, Baltimore County, kehe1@umbc.edu;
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Anne Timm
(), USDA Forest Service, Northern Research Station, anne.l.timm@usda.gov;
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Lee Blaney
(), University of Maryland, Baltimore County, blaney@umbc.edu;
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