Remote fiber optic Raman analysis of benzene, toulene, and ethylbenzene in mock petroleum fuels using partial least squares regression analysis

Flecher, P.; Cooper, John B.; Vess, Thomas M.; Welch, William T.

doi:10.1016/0584-8539(96)01660-1

Cited by 17 publications

(6 citation statements)

References 5 publications

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“…The small diameter, user‐defined length, and high mechanical flexibility of silica optical fibers facilitate the positioning at remote or otherwise difficult‐to‐access (body) sites (Williams et al , Flecher at el. ). These features constitute the basis for the development of probes that may fit in the instrument channel of standard medical endoscopes as demonstrated by Komachi et al .…”

Section: Optical Fibers For Raman Probesmentioning

confidence: 97%

Fiber optic probes for linear and nonlinear Raman applications – Current trends and future development

Latka

Dochow

Krafft

et al. 2013

Laser & Photonics Reviews

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This review focuses on fiber optic probes for linear and nonlinear Raman spectroscopy, especially for medical applications. It aims at providing an overview over contemporary technology, recent first clinical trials, and helps identifying future developments necessary to bring the emerging technology to clinical end users. After a short introduction to linear and nonlinear Raman spectroscopic modalities, general design considerations will be discussed and compared to common fiber probe setups. Subsequently, examples for medical applications of fiber optic Raman probes will be given concentrating on probes for linear Raman spectroscopy as these devices are technologically more mature compared to their counterparts based on nonlinear Raman spectroscopy. The review also includes a brief summary of first multimodal fiber optic probes and highlights their benefits for clinical applications. Finally, probes are introduced which employ either nonlinear Raman spectroscopy or surface enhanced spectroscopy.

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Section: Optical Fibers For Raman Probesmentioning

confidence: 97%

Fiber optic probes for linear and nonlinear Raman applications – Current trends and future development

Latka

Dochow

Krafft

et al. 2013

Laser & Photonics Reviews

View full text Add to dashboard Cite

show abstract

“…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. 34 The main feature to be improved is the sensitivity, which can be done thanks to novel optical fibre probes 35 and SERS substrates, [36][37][38][39][40][41] while chemometric quantification algorithms, [42][43][44][45] when used, are often Partial Least Square-based 30,31,37,[46][47][48].…”

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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“…Optical bers have been used extensively for light delivery and collection in m any types of analytical measu re m en ts 1 , 2 in cluding absorban ce, 3 ,4 uorescence, 5 , 6 phosphorescence, 7 and Raman spectroscopy. 8,9 The possibility of attaching reagents to the distal surfaces ofbers has resulted in the development of ber-optic chemical sensors. 10 The ability to deliver and collect light in inaccessible 11,12 or hazardous areas has rendered the use of optical bers invaluable.…”

Section: Introductionmentioning

confidence: 99%

Fiber-Optic Quantum Counter Probe for Incident Excitation Energy Correction in Fluorescence Measurements

Hart

Jones

2001

Appl Spectrosc

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Excitation-power correction of uorescence spectra is essential for meaningful interpretation of analytical data. In particular, uorescence m easurements obtained using optical bers require special consideration due to the possibility of variations in the light intensity delivered to the sample or the incident excitation energy. A quantum counting ber-optic probe has been developed to sim ultaneously and independently collect uorescence spectra of both analytes and a quantum counter. The probe consists of excitation and emission bers angled to maximize distal cone overlap and a third ber positioned at a greater angle to allow excitation of rhodamine B, which is af xed to its distal end with a polymer. The uorescence of the quantum counter af xed to the ber was linear with incident 266 nm excitation energy over the measured range 1.2 3 10 14 photons per exposure to 1.2 3 10 15 photons per exposure at 266 nm. The corrected uorescence signals were im mune to adverse condition experiments such as laser power reduction and launch berlaser beam misalignment, while the uncorrected signals suffered greatly. The concentration calibration generated using the beroptic quantum counter method showed an improvement in the correlation coef cient, r 2 5 0.950, compared with the calibration generated using uncorrected data, r 2 5 0.906. Different types of adverse conditions were tested including power attenuation, power increase, and ber launch misalignment; the prediction erro rs were between 287% and 366% for the uncorrected data compared with prediction errors between 29% and 15% when using the ber-optic quantum counter method.

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Remote fiber optic Raman analysis of benzene, toulene, and ethylbenzene in mock petroleum fuels using partial least squares regression analysis

Cited by 17 publications

References 5 publications

Fiber optic probes for linear and nonlinear Raman applications – Current trends and future development

Fiber optic probes for linear and nonlinear Raman applications – Current trends and future development

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

Fiber-Optic Quantum Counter Probe for Incident Excitation Energy Correction in Fluorescence Measurements

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