Abstract
This work describes the characterization of a solid-phase extraction (SPE) and liquid-chromatography-tandem mass spectrometry-based method for the analysis of acrylamide (AA) in complex environmental waters. The method involved the SPE of AA using activated carbon, and the AA was detected with tandem mass spectrometry after separating on an ion exclusion high-performance liquid chromatography column. The method incorporated two labeled AA standards for quantification using isotope dilution and to assess absolute extraction recovery. The method was evaluated for inter- and intra-day precision and accuracy. The method was both accurate (i.e., <30 % error) and precise (i.e., <20 % relative standard deviation), with absolute extraction recoveries averaging 37 %. The mass spectrometry provided excellent sensitivity, with instrumental limits of detection and quantitation values of 23 and 75 pg, respectively. The method detection limit was determined to be 0.021 μg/L. The analysis of AA was successfully performed in real-world samples that contained total dissolved solids concentrations ranging from 23,600 to 297,000 mg/L and AA concentrations ranging from 0.082 to 1.0 μg/L.
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Abbreviations
- AA:
-
Acrylamide
- AA-13C:
-
Acrylamide-1-13C
- AA-d3 :
-
Acrylamide-2,3,3-d3
- HPLC:
-
High-performance liquid chromatography
- LC-MS/MS:
-
Liquid chromatography-tandem mass spectrometry
- LOD:
-
Limit of detection
- LOQ:
-
Limit of quantitation
- MDL:
-
Method detection limit
- MRM:
-
Multiple reaction monitoring
- SPE:
-
Solid-phase extraction
- TDS:
-
Total dissolved solids
- TSS:
-
Total suspended solids
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Acknowledgments
The United States Environmental Protection Agency, through its Office of Research and Development, funded and managed the research described here. It has been subjected to the Agency’s peer and administrative review and has been approved for publication. Mention of trade names or commercial products in this paper does not constitute endorsement or recommendation by the EPA.
This information is distributed solely for the purpose of pre-dissemination peer review under applicable information quality guidelines. It has not been formally disseminated by EPA. It does not represent and should not be construed to represent any Agency determination or policy.
The authors thank Matt Landis (EPA) for collecting the samples.
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DeArmond, P.D., DiGoregorio, A.L. Characterization of liquid chromatography-tandem mass spectrometry method for the determination of acrylamide in complex environmental samples. Anal Bioanal Chem 405, 4159–4166 (2013). https://doi.org/10.1007/s00216-013-6822-4
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DOI: https://doi.org/10.1007/s00216-013-6822-4