Two-Dimensional Correlation Analysis Useful for Spectroscopy, Chromatography, and Other Analytical Measurements

Noda, Isao

doi:10.2116/analsci.23.139

Cited by 71 publications

(35 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, less and less charge was consumed in this non-faradic process and the enhanced ion mobility of counter ions made FeðCNÞ 4À 6 and Fc oxidation with less resistance. Theoretically, at a location in a correlation map, synchronous and asynchronous peaks or valleys could not be both observed [13]. However, it is not rare that asynchronous peaks were found close to synchronous peaks/valleys and the sign of the peak or the valley reflects the sequential order of physical changes [14].…”

Section: DCVmentioning

confidence: 98%

Two-dimensional correlation in cyclic voltammetry and electrochemical quartz crystal microbalance: A complementary tool to conventional techniques

Whitman

Bork

Tang

2011

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

Section: DCVmentioning

confidence: 98%

Two-dimensional correlation in cyclic voltammetry and electrochemical quartz crystal microbalance: A complementary tool to conventional techniques

Whitman

Bork

Tang

2011

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…It is routinely used in nuclear magnetic resonance (NMR) spectroscopy and has also been extensively applied to vibrational spectroscopy [44][45][46][47][48]. The correlation transform provides one dimensional (1D) spectra from which background features are effectively removed.…”

Section: Introductionmentioning

confidence: 99%

Raman system for sensitive and selective identification of volatile organic compounds

Park

Mercer-Smith

et al. 2015

Sensors and Actuators B: Chemical

View full text Add to dashboard Cite

a b s t r a c tAnalysis of volatile organic compounds (VOCs) for medical and industrial applications typically requires complex and expensive mass spectrometric systems to achieve the desired sensitivity and specificity. Raman spectroscopy enables specific compound identification based on distinct spectral fingerprints but traditionally has low sensitivity. We have developed a novel Raman system that provides VOC detection in the low ppm range. VOCs from the gas phase are absorbed and enriched in a thin polymer film coated on the surface of an optical sensor element. The VOC enriched polymer film is probed with evanescent wave excitation and optimized Raman signal collection. The herein described Raman sensor is low-cost, robust, readily manufacturable, and capable of providing high sensitivity without the nanostructured sensors required for surface enhanced Raman spectroscopy. To suppress background noise and interfering spectral features while improving our ability to resolve VOC mixture spectra, we applied two-dimensional (2D) correlation analysis to time series spectra acquired during VOC absorption into the polymer film. We established proof of principle through analysis of known VOC biomarkers for selected bacterial pathogens. The system enabled VOC detection with significantly higher sensitivity than commercial Raman probes. We observed good agreement between spectra of VOCs in the thin film obtained after 2D correlation analysis, and of pure VOCs using a commercial probe. Mixture spectra were further de-convoluted based on the off-diagonal peaks observable in the 2D Raman spectrum in conjunction with segmented data analysis. We anticipate that this system can be applied to a variety of medical, industrial, and biodefense applications.

show abstract

“…The external disturbances included temperature, pressure and concentration. 7,8 Liu illuminated the NIR band assignments of methanol and ethanol by generalized 2D-COS. 9 Genkawa et al demonstrated the IR/NIR absorption bands of water and liquid oleic acid by 2D-COS technology, in which the temperature was used as external disturbance. 10 According to the structure and spectra, 2D-COS technology was applied to assign the variation of band position shift by Shinzawa et al It revealed a phenomenon that the cellulose crystalline phase disorganized in accordance with the grinding.…”

Section: Introductionmentioning

confidence: 99%

NIR assignment of isopsoralen by 2D-COS technology and model application in Yunkang Oral Liquid

Pei

Shi

et al. 2015

J. Innov. Opt. Health Sci.

View full text Add to dashboard Cite

Near infrared (NIR) assignment of Isopsoralen was performed using deuterated chloroform solvent and two-dimensional correlation spectroscopy (2D-COS) technology. Yunkang Oral Liquid was applied to study Isopsoralen, the characteristic bands by spectral assignment as well as the bands by interval partial least squares (iPLS) and synergy interval partial least squares (siPLS) were used to establish partial least squares (PLS) model. The coe±cient of determination in calibration (R

show abstract

Two-Dimensional Correlation Analysis Useful for Spectroscopy, Chromatography, and Other Analytical Measurements

Cited by 71 publications

References 19 publications

Two-dimensional correlation in cyclic voltammetry and electrochemical quartz crystal microbalance: A complementary tool to conventional techniques

Two-dimensional correlation in cyclic voltammetry and electrochemical quartz crystal microbalance: A complementary tool to conventional techniques

Raman system for sensitive and selective identification of volatile organic compounds

NIR assignment of isopsoralen by 2D-COS technology and model application in Yunkang Oral Liquid

Contact Info

Product

Resources

About