Remote detection of groundwater contaminants using far-ultraviolet laser-induced fluorescence

Chudyk, Wayne; Carrabba, Michael M.; Kenny, Jonathan E.

doi:10.1021/ac00284a017

Cited by 86 publications

(26 citation statements)

References 49 publications

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“…Since fluorescent dyes are readily detected with a fiber optic system, this method is attractive for hydrological tracing studies [ Kulp et al , 1988; Schmid and Barczewski , 1995]. In addition, fiber optic sensors can detect several types of contaminants such as benzene, toluene, phenol, xylene, and other organic compounds [ Chudyk et al , 1985; Knezovich et al , 1990; Apitz et al , 1992; Bublitz et al , 1995; Kumke et al , 1995].…”

Section: Analysis Of Dye Tracing Experimentsmentioning

confidence: 99%

Dyes as tracers for vadose zone hydrology

Flury

Wai

2003

Reviews of Geophysics

242

166

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[1] Dyes are important tracers to investigate subsurface water movement. For more than a century, dye tracers have provided clues about the hydrological cycle as well as flow and transport processes in the subsurface. Groundwater contamination often originates in the vadose zone. Agrochemicals applied to the soil surface, toxic compounds accidentally spilled by human activities, and contaminants released from waste repositories leach through the vadose zone and can ultimately pollute groundwater resources. Dyes are an important tool to assess flow pathways of such contaminants. This review compiles information on dyes used as hydrological tracers, with particular emphasis on vadose zone hydrology. We summarize briefly different human-applied tracers, including nondye tracers. We then provide a historical sketch of the use of dyes as tracers and describe newer developments in visualization and quantification of tracer experiments. Relevant chemical properties of dyes used as tracers are discussed and illustrated with dye intermediates and selected dye tracers. The types of dyes used as tracers in subsurface hydrology are summarized, and recommendations are made regarding the use of dye tracers. The review concludes with a toxicological assessment of dyes used as hydrological tracers. Many different dyes have been proposed as tracers for water movement in the subsurface. All of these compounds, however, are to some degree retarded by the subsurface medium. Nevertheless, dyes are useful tracers to visualize flow pathways.

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Section: Analysis Of Dye Tracing Experimentsmentioning

confidence: 99%

Dyes as tracers for vadose zone hydrology

Flury

Wai

2003

Reviews of Geophysics

242

166

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“…By using fiberoptics it is possible to produce a compact unit that can provide a remote excitation and light collection system that permits examination of spectral properties of fluids or solids without building complex optical equipment into a small probe. Chudyk, Carrabba and Kenny (1985) and Chudyk and others (1989) ported on units developed for measuring fluorescence from c ganic contaminants in monitoring wells. Lieberman, Inman and Stromvall (1987) showed how a fiber optic fluorescence unit could be used for measuring trace amounts of inorganic contaminants remotely in seawater using fluorogenic ligands.…”

Section: Sensors Based On Spectral Propertiesmentioning

confidence: 99%

Proceedings of the Environmental Research and Development (R&D) technical Workshop Held in San Diego, California on 7-9 November 1989

CA¹

1990

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“…Among the different methods, Laser-Induced Fluorescence seems to be inappropriate in real cases because of the broadness and overlap of output signals. 23 With regard to Infrared Attenuated Total Reflection spectroscopy, results are encouraging even if the spectral range available to identify the pollutants is quite narrow and very often limited to only one or two bands by components. 24,25 Finally Raman spectrometry [26][27][28][29][30] remains very attractive owing to the fact that water response is weak, differentiation of analytes is quite high, and measurements are very fast [31][32][33] and may be even used without standardization.…”

Section: Introductionmentioning

confidence: 99%

Fast identification and quantification of BTEX coupling by Raman spectrometry and chemometrics

Moreau

Rinnert

2015

Analyst

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Monoaromatic hydrocarbons (MAHs) monitoring is of environmental interest since these chemical pollutants are omnipresent. While waiting for robust sensors able to detect hydrocarbons at very low levels, the present study shows how each compound from pure BTEX mixtures can be identified fast and quantified thanks to Raman spectrometry and data processing based on the SIMPLISMA algorithm. A preprocessing module has been created to remove background contributions and a postprocessing program has been added to achieve matching and calibration. A wide range of BTEX concentrations and relative proportions has been investigated in order to determine the limitations of the processing. Output results achieved an accuracy of up to 95%. This method could be extended to other important pollutants such as polyaromatic hydrocarbons (PAHs) and chlorinated hydrocarbon derivatives.

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Remote detection of groundwater contaminants using far-ultraviolet laser-induced fluorescence

Cited by 86 publications

References 49 publications

Dyes as tracers for vadose zone hydrology

Dyes as tracers for vadose zone hydrology

Proceedings of the Environmental Research and Development (R&D) technical Workshop Held in San Diego, California on 7-9 November 1989

Fast identification and quantification of BTEX coupling by Raman spectrometry and chemometrics

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