Automated detection of methanol vapour by open path Fourier transform infrared spectrometry

Bangalore, Arjun S.; Small, Gary W.; Combs, Roger J.; Knapp, Robert B.; Kroutil, Robert T.

doi:10.1016/0003-2670(94)00241-x

Cited by 42 publications

(19 citation statements)

References 8 publications

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“…Open path FTIR can be employed for qualitative monitoring of methanol vapor in the atmosphere. 186 Quantitative methods have also been proposed for the NIR second derivative determination of methanol in synthetic mixtures of methanol, butanol, acetone, methylene chloride and dichloropropane. 187 Similarly, methods were proposed for FTIR determination of mixtures of 2,2-dimethoxypropane, acetone and methanol, 188 which is especially useful in the simplex optimization for FTIR remote sensing measurement of SF 6 , methanol, acetone and 2-butanone in synthetic mixtures.…”

Section: Fourier Transform Infrared Determination Of Products In the mentioning

confidence: 99%

Quantitative Analysis, Infrared

Cadet

Guárdia

2000

Encyclopedia of Analytical Chemistry

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In this article, after reviewing the different mathematical methods used in quantification we will describe and discuss their respective advantages and inconveniences. First of all, different examples of applications of infrared (IR) spectroscopy, used with or without other analytical chemistry methods, will be presented. Some examples of direct quantitative analysis in food analysis will be reviewed: lipids (measurement of unsaturation degrees, lipids determination), carbohydrates, proteins (secondary structures, quantitative analysis). We will also focus on original examples of the use of IR spectroscopy combined with enzymes. Secondly, some examples of Fourier transform infrared (FTIR) analysis coupled with other analytical methods are reviewed in the following fields: FTIR quantification in pharmaceuticals, petroleum, paints and other industrial products and in the fields of health, environment, and trace compounds analysis. Finally, we will discuss the limitations and perspectives of IR spectroscopy for quantitative analysis. It appears that the most significant developments in the field of quantitative analysis will most probably come through progress in chemometrics and flow analysis (FA) (automation).

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Section: Fourier Transform Infrared Determination Of Products In the mentioning

confidence: 99%

Quantitative Analysis, Infrared

Cadet

Guárdia

2000

Encyclopedia of Analytical Chemistry

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“…Traditionally, detection of methanol is accomplished by Fourier transform infrared (FTIR), chromatography and electrochemical methods (Bangalore et al 1994;Qin and Cadet 1997;De Paula et al 1999). Electrochemical techniques are the most popular due to high sensitivity, rapid turnaround, and low cost and most electrochemical methods utilize enzyme electrodes (Liu and Kirchhoff 2007;Wu et al 2007; Guo and Dong 1997;Zhang et al 1999;Konash and Magner 2005).…”

Section: Introductionmentioning

confidence: 99%

Nickel-Palladium Nanoparticles for Nonenzymatic Methanol Detection

2012

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Silicon microchannel plates (MCP) modified by nickel-palladium nanoparticles (Ni-Pd/Si-MCP) have highly ordered microchannels with uniform diameters and lengths isolated and parallel to one another and are excellent sensors for the determination of methanol in alkaline solutions. The 3D ordered Si MCP is fabricated by electrochemical etching used as the backbone, and the Ni-Pd nanoparticles are sensitive materials for detecting methanol that was obtained by an electroless plating method. Scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and electrochemical methods were employed to characterize the Ni-Pd/Si-MCP structure. An electrochemical workstation was used to monitor the sensing characteristics of the Ni-Pd/Si-MCP electrode. As a result of the synergetic effects rendered by the MCP and Ni-Pd nanoparticles, these sensors present a high sensitivity of 0.168 mA mM À1 , and the detection limits was 12 lM. In particular, since the fabrication process is compatible with conventional silicon technology, the structure has immense potential as an efficient, nonenzymatic, and integrated methanol sensors.

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“…Direct spectroscopic and electronic conductivity measurements have been used due to the change in optical and electrical properties, respectively of the material exposed to the organic vapour [4]. Infrared spectroscopy [5] used for detection of methanol vapour in air, but this need expensive instrumentation and is not suitable for on-line monitoring. Ethanol detection was based on the using of metal oxides and powders [6] which catalyze the oxidation of ethanol.…”

Section: Introductionmentioning

confidence: 99%