Determination of Unsaturation Distribution in Polybutadienes by Infrared Spectrometry

1959 ◽  
Vol 31 (4) ◽  
pp. 529-532 ◽  
Author(s):  
R. S. Silas ◽  
Joy. Yates ◽  
Vernon. Thornton
Keyword(s):  
Infrared Spectrometry

DETERMINATION OF MICRO-AMOUNTS OF 5β-PREGNAN-3α-OL-20-ONE IN URINE USING INFRARED-SPECTROMETRY

1962 ◽  
Vol 41 (2) ◽  
pp. 234-246 ◽  
Author(s):  
H. J. van der Molen
Keyword(s):  
Infrared Spectrum ◽  
Quantitative Determination ◽  
Acid Hydrolysis ◽  
Chromatographic Separation ◽  
Pure Form ◽  
Infrared Spectrometry ◽  
Hydrolysis Of

ABSTRACT A procedure for the quantitative determination of 5β-pregnan-3α-ol-20-one in urine is described. After acid hydrolysis of the pregnanolone-conjugates in urine, the free steroids are extracted with toluene. Pregnanolone is isolated in a pure form as its acetate; after chromatographic separation of the free steroids on alumina, the fraction containing pregnanolone is acetylated and rechromatographed on alumina. Quantitative determination of the isolated pregnanolone-acetate is carried out with the aid of the infrared spectrum recorded by a micro KBr-wafermethod. The reliability of the method under various conditions is discussed under the headings, specificity, accuracy, precision and sensitivity. It is possible to determine 30–40 μg pregnanolone in a 24-hours urine portion with a precision of 25%.

Simultaneous determination of the pesticide naptalam and its metabolites in natural water by Fourier transform infrared spectrometry

The Analyst ◽  
1999 ◽  
Vol 124 (3) ◽  
pp. 367-371 ◽  
Author(s):  
Kazem Kargosha ◽  
Seyyed Hamid Ahmadi ◽  
Alireza Ghassempour ◽  
Mohammad Reza Arshadi
Keyword(s):  
Fourier Transform ◽  
Simultaneous Determination ◽  
Natural Water ◽  
Fourier Transform Infrared ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry

Determination of some quality parameters in sugar beet by near infrared spectrometry (NIRS)

1996 ◽  
Vol 27 (5-8) ◽  
pp. 1549-1560 ◽  
Author(s):  
A. W. M. Huijbregts ◽  
A. H. de Regt ◽  
P. D. Gijssel
Keyword(s):  
Sugar Beet ◽  
Near Infrared ◽  
Quality Parameters ◽  
Infrared Spectrometry ◽  
Near Infrared Spectrometry

Selective determination of penicillamine by on-line vapor-phase generation combined with Fourier transform infrared spectrometry

Talanta ◽  
2009 ◽  
Vol 78 (2) ◽  
pp. 584-589 ◽  
Author(s):  
Mohsen Zeeb ◽  
Mohammad Reza Ganjali ◽  
Parviz Norouzi ◽  
Seyyed Rezvan Moeinossadat
Keyword(s):  
Fourier Transform ◽  
Vapor Phase ◽  
Fourier Transform Infrared ◽  
Infrared Spectrometry ◽  
Fourier Transform Infrared Spectrometry ◽  
Selective Determination ◽  
On Line

Determination of Toluene and Xylene Sulfonate Concentrations in Aqueous Solution by Infrared Spectrometry.

1963 ◽  
Vol 35 (7) ◽  
pp. 912-914 ◽  
Author(s):  
S. D. Kullbom ◽  
H. F. Smith
Keyword(s):  
Aqueous Solution ◽  
Infrared Spectrometry

Nondestructive determination of pear internal quality indices by visible and near-infrared spectrometry

LWT ◽  
2008 ◽  
Vol 41 (9) ◽  
pp. 1720-1725 ◽  
Author(s):  
Yande Liu ◽  
Xingmiao Chen ◽  
Aiguo Ouyang
Keyword(s):  
Near Infrared ◽  
Internal Quality ◽  
Infrared Spectrometry ◽  
Quality Indices ◽  
Nondestructive Determination ◽  
Near Infrared Spectrometry
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