State of Dissolved Water in Triglycerides as Determined by Fourier Transform Infrared and Near Infrared Spectroscopy

Kurashige, Jun; Takaoka, Kyo; Takasago, Masahisa; Taru, Yasunori; Kobayashi, Koichi

doi:10.5650/jos1956.40.549

Cited by 20 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The positions of 1 and 3 of the water monomer, dimer, trimer and polymer whose wave numbers were obtained by the low temperature matrix method and the molecular beam method [3,4] are shown in Table 1. Considering these wave numbers, Kurashige suggests that the standard regions of the spectrum of water monomer, dimer and polymer (including trimer) in triglycerides are about 3925 to 3785, 3715 to 3538 and 3476 to 3240 cm-' [5]. …”

Section: Analysis Of Water Spectrum In Samplesmentioning

confidence: 99%

“…The IR spectrum of the water bands has been used to analyze the structure of bulk water clusters [3,4], and these results can be applied to study the state of water in liquid hydrocarbons [5]. Moreover, water behavior under electric fields can be observed directly because the IR spectrum of water in oil can be measured when the oil is under an electrical field.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

State of water in hydrocarbon liquids and its effect on conductivity [transformer oil]

Itahashi¹,

Mitsui²,

Satô³

et al. 1995

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

A B S T R A C TThe humidity or the dissolved water in insulating oils influences conduction and breakdown phenomena. The corrections between the amount of dissolved water and the electrical properties have been investigated. However, the effect of water has been based only on the total amount of water because in the past there was no way to observe the state of water in oil in an electrical field. With the availability of Fourier transform infrared (FTIR) to characterize water clusters, the effect of water in transformer oil can be reassessed based not only on the amount of water, but also on the state of water. In this paper, IR spectra of water in several liquid hydrocarbons and conduction current were measured at the same time. The selection of the liquid hydrocarbons was made on the basis of the degree of polarizability of the liquids. Because of the water molecules combine with the polar structures by hydrogen bonding, the state of water depends on the polarizability of the oil. As a result, there is a difference in conduction phenomena depending on whether water is free or combined with the polar structure of the liquid.

show abstract

Section: Analysis Of Water Spectrum In Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

State of water in hydrocarbon liquids and its effect on conductivity [transformer oil]

Itahashi¹,

Mitsui²,

Satô³

et al. 1995

IEEE Trans. Dielect. Electr. Insul.

View full text Add to dashboard Cite

show abstract

“…Takaoka et al 7 studied the structure of water in lipids and organic solvents. They obtained the NIR spectra of organic compounds involving water and used curve fitting in the spectral region where the band due to a ν 2 + ν 3 mode of water is observed.…”

Section: Structure Of Water In Organic Solventsmentioning

confidence: 99%

An Overview of Research and Development of near Infrared Spectroscopy in Japan

Iwamoto

Ozaki

1995

Journal of Near Infrared Spectroscopy

View full text Add to dashboard Cite

This paper presents an overview of research and development of near infrared (NIR) spectroscopy in Japan. The application of NIR spectroscopy in Japan only stretches back to the early 1980s. Thus, the history is rather short, but progress in the research and development of NIR spectroscopy is extremely fast. The history and present status of NIR spectroscopy in Japan are described and a number of representative applications carried out in Japan are introduced.

show abstract

“…Natural oils used in lipid vehicles also contain varying amounts of water between 300 and 9,000 ppm (40,41). Monoglycerides can retain large amounts of water, e.g.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Solubility Relationships and the Effect of Water Uptake in Triglyceride/Monoglyceride Microemulsions

2007

View full text Add to dashboard Cite

show abstract

State of Dissolved Water in Triglycerides as Determined by Fourier Transform Infrared and Near Infrared Spectroscopy

Abstract: The state of dissolved water in triglycerides (TG) such as tristearin, triolein, trilinolein, and trilinolenin, was analyzed by Fourier transform infrared and near infrared spectroscopy at 20•Ž, and compared with that of water.

Cited by 20 publications

References 0 publications

State of water in hydrocarbon liquids and its effect on conductivity [transformer oil]

State of water in hydrocarbon liquids and its effect on conductivity [transformer oil]

An Overview of Research and Development of near Infrared Spectroscopy in Japan

Quantitative Solubility Relationships and the Effect of Water Uptake in Triglyceride/Monoglyceride Microemulsions

Contact Info

Product

Resources

About