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Determining eosin as a groundwater migration tracer by capillary electrophoresis/laser-induced fluorescence using a multiwavelength laser.
Electrophoresis. 2003 Jul; 24(14):2335-9.E

Abstract

Measurements for determining of the path of groundwater migration remain an important tool in the overall assessment of environmental processes and transport of pollutants. This paper examines a multiwavelength laser for the determination of eosin, a groundwater tracer, using capillary electrophoresis/laser-induced fluorescence (CE-LIF) at excitation wavelength 514.5 nm. Eosin was one of four dyes used in a study of adjacent resource conservation and recovery act (RCRA) and Superfund sites (created by the comprehensive environmental response, compensation, and liability act) that routinely relied on spectrofluorimetry for determination as we have previously reported. However, the improved specificity of CE-LIF is further illustrated in this work applied to the analysis of adsorbent pads placed in monitoring wells after dye injection and flushing from injection wells. The multiwavelength laser provided the capability to analyze for several dyes with one laser. The advantages/disadvantages of CE-LIF versus spectrofluorimetry are discussed. Spectrofluorimetry is fast and sensitive and will likely continue to be the primary workhorse technique. CE-LIF could provide confirmation when greater specificity is needed in a regulatory context.

Authors+Show Affiliations

Brumley WC
U.S. Environmental Protection Agency, Environmental Sciences Division, Las Vegas, Nevada, USA. brumley.bill@epa.gov
Farley JW
No affiliation info available

MeSH

Electrophoresis, CapillaryEnvironmental MonitoringEosine Yellowish-(YS)Fluorescent DyesFluorometryFresh WaterLasers

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

12874868

Citation

Brumley, William C., and John W. Farley. "Determining Eosin as a Groundwater Migration Tracer By Capillary Electrophoresis/laser-induced Fluorescence Using a Multiwavelength Laser." Electrophoresis, vol. 24, no. 14, 2003, pp. 2335-9.
Brumley WC, Farley JW. Determining eosin as a groundwater migration tracer by capillary electrophoresis/laser-induced fluorescence using a multiwavelength laser. Electrophoresis. 2003;24(14):2335-9.
Brumley, W. C., & Farley, J. W. (2003). Determining eosin as a groundwater migration tracer by capillary electrophoresis/laser-induced fluorescence using a multiwavelength laser. Electrophoresis, 24(14), 2335-9.
Brumley WC, Farley JW. Determining Eosin as a Groundwater Migration Tracer By Capillary Electrophoresis/laser-induced Fluorescence Using a Multiwavelength Laser. Electrophoresis. 2003;24(14):2335-9. PubMed PMID: 12874868.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determining eosin as a groundwater migration tracer by capillary electrophoresis/laser-induced fluorescence using a multiwavelength laser. AU - Brumley,William C, AU - Farley,John W, PY - 2003/7/23/pubmed PY - 2004/3/25/medline PY - 2003/7/23/entrez SP - 2335 EP - 9 JF - Electrophoresis JO - Electrophoresis VL - 24 IS - 14 N2 - Measurements for determining of the path of groundwater migration remain an important tool in the overall assessment of environmental processes and transport of pollutants. This paper examines a multiwavelength laser for the determination of eosin, a groundwater tracer, using capillary electrophoresis/laser-induced fluorescence (CE-LIF) at excitation wavelength 514.5 nm. Eosin was one of four dyes used in a study of adjacent resource conservation and recovery act (RCRA) and Superfund sites (created by the comprehensive environmental response, compensation, and liability act) that routinely relied on spectrofluorimetry for determination as we have previously reported. However, the improved specificity of CE-LIF is further illustrated in this work applied to the analysis of adsorbent pads placed in monitoring wells after dye injection and flushing from injection wells. The multiwavelength laser provided the capability to analyze for several dyes with one laser. The advantages/disadvantages of CE-LIF versus spectrofluorimetry are discussed. Spectrofluorimetry is fast and sensitive and will likely continue to be the primary workhorse technique. CE-LIF could provide confirmation when greater specificity is needed in a regulatory context. SN - 0173-0835 UR - https://www.unboundmedicine.com/medline/citation/12874868/Determining_eosin_as_a_groundwater_migration_tracer_by_capillary_electrophoresis/laser_induced_fluorescence_using_a_multiwavelength_laser_ DB - PRIME DP - Unbound Medicine ER -