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Validation of a QuEChERS method for extraction of estrogens from a complex water matrix and quantitation via high-performance liquid chromatography-mass spectrometry.

Abstract：

:The traditional approach to extracting estrogens from water matrices, solid-phase extraction (SPE), presents a number of challenges when applied to complex wastewater matrices. Conversely, the QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) clean-up method offers an alternative sample preparation approach that omits sample filtration and overcomes additional challenges associated with SPE. The objective of this study was to implement and validate a scaled QuEChERS method, using a standard addition approach, for extracting estrone (E1), 17β-estradiol (E2), and estriol (E3) from the estrogenic influent of a recirculating aquaculture system containing American eels (Anguilla rostrata). While traditional QuEChERS protocols do not facilitate considerable sample concentration, a 500-fold concentration factor was implemented for reliable quantitation of parts-per-trillion concentrations of estrogens from an initial sample volume of 20 mL to a final extract volume of 40 μL. Following analysis via high-performance liquid chromatography-mass spectrometry, excellent process efficiencies were observed at spiked concentrations of 10 and 50 ng L-1 for E2 and E1 (101 to 111%; %RSD ≤ 16), and moderate to acceptable process efficiencies were achieved for E3 (75 to 87%; %RSD ≤ 16). Validation of method parameters, including specificity, linearity, accuracy (recovery and process efficiencies), precision (intra-day precision, and inter-day precision), matrix effects, method detection limit, and limit of quantitation, led to reliable quantitation of unknown concentrations of E1, E2, and E3 in the aquaculture influent as low as 52, 20, and 33 ng L-1, respectively. This study provides a validated analytical method for waste systems requiring quantitation of estrogens in their complex wastewater matrices.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Sweeney CL,Bennett JL,Brown CAM,Ross NW,Gagnon GA

doi

10.1016/j.chemosphere.2020.128315

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

128315

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(20)32510-8

journal_volume

263

pub_type

杂志文章

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