Analysis of environmental soil samples for aromatic amines
To support a goal of the USEPA Characterization Research Division in Las Vegas, a rapid HPLC/UV of fluorescence method was developed for ppb levels of aromatic amines in soils. Existing methods were either designed for water, or gave poor and variable recoveries in soils. Both fast, reversible reactions and slow, irreversible reactions of these amines are reported to occur with the humic materials in the soil. The method involved sonication of 2 g soil with 1% NH4 OH/CH{sub 3}CN for 2 hours, centrifuging 30 min, adding 3 mL extract to 7 mL 0.01 M NH{sub 4}OAc, filtering, transferring through an acrodisc for HPLC analysis with gradient elution from 70% 0.01M NH{sub 4}OAc, 30% CH{sub 3}CN to 100% CH{sub 3}CN over 17 min; hold 3.5 min. The analytical method provided reproducible recoveries from both sand and humic-containing soils (e.g., 70-99% on {beta}-naphthylamine and 72-96% on 4-nitroaniline, spiked at 1 ppm). The method detection limits ranged from 1 ppb for {beta}-naphthyl-amine to 1 ppm for pyridines. HPLC analysis used ultraviolet, fluorescence and mass spectrometric detectors. Notice: The US Environmental Protection Agency (EPA), through its Office of Research and Development (ORD), partially funded and collaborated in the research described in this abstract for a proposed poster. It does not necessarily reflect the views of the EPA or ORD.
- OSTI ID:
- 598191
- Report Number(s):
- CONF-950980-; TRN: 98:001165-0006
- Resource Relation:
- Conference: 109. international annual meeting and exposition of the Association of Official Analytical Chemists: for analytical science that solves today`s problems and anticipates tomorrow`s needs, Nashville, TN (United States), 17-21 Sep 1995; Other Information: PBD: 1995; Related Information: Is Part Of 109th AOAC international annual meeting & exposition. Final program; PB: 110 p.
- Country of Publication:
- United States
- Language:
- English
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