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You searched for: Subject term Fourier transform infrared spectroscopy Remove constraint Subject term: Fourier transform infrared spectroscopy
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1. Infrared Spectroscopy of Polyethylene Terephthalate Fibers: Uses and Limitations

Author:
A. Garton; D.J. Carlsson; D.M. Wiles
Source:
Textile research journal 1981 v.51 no.1 pp. 28-34
ISSN:
0040-5175
Subject:
Fourier transform infrared spectroscopy; fabrics; polyethylene terephthalates; spectral analysis; textile fibers
Abstract:
... The potential of Fourier-Transform Infrared (FTIR) spectroscopy for characterizing polyethylene terephthalate (PET) fibers is examined both from a practical and a theoretical view point. Problems associated with sample preparation, spectral data analysis, and refraction and reflection at the fiber surfaces are discussed. The FTIR technique is used to characterize a range of partially-oriented PET ...
DOI:
10.1177/004051758105100106

2. Carbon-13 nuclear magnetic resonance spectroscopy of covalently crosslinked dextran (Sephadex G) hydrogels

Author:
Scherrer, Rene; Lundin, Robert; Benson, Mabry; Witt, Sue C.
Source:
Carbohydrate research 1983 v.124 no.1 pp. 151-155
Subject:
crosslinking; physical properties; crystal structure; dietary carbohydrate; Fourier transform infrared spectroscopy; molecular conformation; dextran
Handle:
10113/36365
DOI:
10.1016/0008-6215(83)88363-3

3. Kenaf lignin structure by correlation of CMB, FTIR and chemical analysis

Author:
Abbott, T.P.; Tjarks, L.W.; Bagby, M.O.
Source:
Pulping Conference : [proceedings] 1986 pp. 177-183
ISSN:
0275-0899
Subject:
nuclear magnetic resonance spectroscopy; kenaf; chemical analysis; Fourier transform infrared spectroscopy; Hibiscus cannabinus; lignin
Handle:
10113/23789

4. Adsorption and Oxidation of Phenolic Compounds by Iron and Manganese Oxides

Author:
M. B. McBride
Source:
Soil Science Society of America journal 1987 v.51 no.6 pp. 1466-1472
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; acetates; adsorption; buffers; catalytic activity; catechol; copper; electron transfer; ferric oxide; hydroquinone; iron; manganese; manganese oxides; metal ions; models; oxidation; oxygen; oxygen consumption; pH; phenol; phosphates; quinones
Abstract:
... The adsorption and oxidation of catechol and hydroquinone by Fe and Mn oxides has been investigated by Fourier transform infrared spectroscopic (FTIR) analysis of the adsorbed molecules and by the measurement of O₂ consumption by aqueous suspensions of these oxides. Evidence for direct coordination of catechol and salicylate to surface Fe³⁺ on iron oxides was obtained by FTIR. The promotion of cat ...
DOI:
10.2136/sssaj1987.03615995005100060012x

5. Characterizing Aged Textile Fibers by Fourier Transform Infrared Photoacoustic Spectroscopy : Part I: Comparison of Artificial and Natural Ageing in Cotton'

Author:
Jeanette M. Cardamone; J.Michael Gould; S.H. Gordon
Source:
Textile research journal 1987 v.57 no.4 pp. 235-239
ISSN:
0040-5175
Subject:
Fourier transform infrared spectroscopy; absorption; air; cotton fabric; lint cotton; nitrogen; nondestructive methods; photoacoustic spectroscopy; tensile strength; textile fibers; Southwestern United States
Abstract:
... Photoacoustic Fourier transform infrared Spectroscopy has been used to characterize naturally and artificially aged fibers of cotton. Naturally aged cotton fibers from ar cheological sites in the southwest United States exhibited a family of pronounced absorption bands in the C=O stretch region of the infrared spectrum (1600-1750 cm⁻¹) not found in fibers from new cotton cloth. New cotton fibers a ...
DOI:
10.1177/004051758705700408

6. Dissociation of dissolved pectins: fourier-transform infrared spectroscopy

Author:
Purcell, James M.; Fishman, Marshall L.
Source:
Carbohydrate research 1987 v.159 no.2 pp. 185-190
Subject:
pectins; dietary carbohydrate; food processing; esterification; sodium chloride; Fourier transform infrared spectroscopy; dissociation; heat treatment; ionization
Abstract:
... F.t.i.r. spectra of neutralized pectic substances having a degree of methyl esterification ranging from 0 to 70 dissolved in pure D2O solvent and in D2O containing 0.05m NaCl were measured. Solvent-subtracted F.t.i.r. spectra were obtained before and after activation of pectin dissociation by briefly heating to 110°. Based on literature assignments, this band was attributed to the antisymmetric st ...
Handle:
10113/36374
DOI:
10.1016/S0008-6215(00)90214-3

7. Basic Studies on the Stability of Filtration Fabrics : Part I: The Effects of Sulphur Dioxide and Nitrogen Oxides on Polyacrylonitrile

Author:
Claudia Weber; Ulrich Altenhofen; Helmut Zahn
Source:
Textile research journal v.58 no.9 pp. 507-514
ISSN:
1746-7748
Subject:
Fourier transform infrared spectroscopy; calcium hydroxide; cleavage (chemistry); differential scanning calorimetry; fabrics; filters; filtration; gases; neutralization; nitrogen dioxide; oxidation; pollutants; polyacrylonitrile; scanning electron microscopy; smoke; sulfur dioxide; synthetic fibers; temperature; tensile strength; textile fibers; water content
Abstract:
... Synthetic fabrics used as filters for removing particles from industrial smoke are liable to deteriorate under operating conditions, i.e., the presence of moisture, relatively high temperatures, and aggressive gases like SO₂ and NO₂. This paper (the first in a series) describes the deterioration of polyacrylonitrile (PAN) fibers under laboratory-simulated conditions by Fourier transform infrared s ...
DOI:
10.1177/004051758805800903

8. Characterization and Quantification of Aluminum-Substituted Hematite-Goethite Mixtures by X-ray diffraction, and Infrared and Mössbauer Spectroscopy

Author:
D. D. Amarasiriwardena; L. H. Bowen; S. B. Weed
Source:
Soil Science Society of America journal 1988 v.52 no.4 pp. 1179-1186
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; aluminum; goethite; hematite
Abstract:
... Mixtures of aluminous goethite and hematite with varying amounts of Al substitution up to about 25 mole % were analyzed by x-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and Mössbauer spectroscopy. Crystalline dimensions decreased with Al substitution for both the hydrothermally-synthesized goethites and the hematites prepared from them by heating at 500 °C. Band position ...
DOI:
10.2136/sssaj1988.03615995005200040052x

9. Long‐Path Ftir Measurement of Atmospheric Trace Gas Concentrations

Author:
James R. Gosz; Clifford N. Dahm; Paul G. Risser
Source:
Ecology 1988 v.69 no.5 pp. 1326-1330
ISSN:
0012-9658
Subject:
Fourier transform infrared spectroscopy; analytical chemistry; aquatic ecosystems; biogeochemical cycles; biosphere; detection limit; energy flow; gases
Abstract:
... Extending the ecological knowledge base to larger scales will require new measurement tools. Long—path Fourier—Transform Infrared Spectroscopy (FTIR) is a promising technology because of its ability to measure the concentration of multiple trace gases simultaneously over spatial scales up to 1 km. Detection limits reaching 1μL/KL for numerous gases make this a powerful method with the potential to ...
DOI:
10.2307/1941630

10. Adsorption of Para-substituted Benzoates on Iron Oxides

Author:
King-Hsi Kung; Murray B. McBride
Source:
Soil Science Society of America journal 1989 v.53 no.6 pp. 1673-1678
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; adsorption; anions; aqueous solutions; benzoates; benzoic acid; goethite; iron; iron oxides; ligands; sorption isotherms; ultraviolet-visible spectroscopy; vapors
Abstract:
... In order to understand the binding mechanism and adsorptivity of benzoic acids on Fe oxides, adsorption of parasubstituted amino, nitro, methyl, methoxy, and chlorobenzoic acids onto noncrystalline Fe hydroxide and goethite from aqueous solution and vapor state was studied. Adsorption on noncrystalline Fe hydroxide from solution phase was quantified by the determination of adsorption isotherms usi ...
DOI:
10.2136/sssaj1989.03615995005300060010x

11. Diffuse Reflectance and Transmission Fourier Transform Infrared (DRIFT) Spectroscopy of Humic and Fulvic Acids

Author:
A. U. Baes; P. R. Bloom
Source:
Soil Science Society of America journal 1989 v.53 no.3 pp. 695-700
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; absorbance; copper; fulvic acids; humic acids; hydrogen bonding; ionization; peat; pellets; potassium bromide; powders; reflectance; reflectance spectroscopy; sodium
Abstract:
... The infrared spectra of a humic and a fulvic acid from a peat were obtained using diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy and were compared with transmission Fourier transform infrared (FTIR) spectra using KBr pellets. The DRIFT spectra showed similar resolution to KBr pellet transmission spectra. Elimination of interference due to water bands is easy with DRIFT and pos ...
DOI:
10.2136/sssaj1989.03615995005300030008x

12. Solid-state Carbon-13 Nuclear Magnetic Resonance and Infrared Spectroscopy of Composted Organic Matter

Author:
Y. Inbar; Y. Chen; Y. Hadar
Source:
Soil Science Society of America journal 1989 v.53 no.6 pp. 1695-1701
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; absorbance; carbon nitrogen ratio; cation exchange capacity; cattle manure; cellulose; compost maturity; composting; crude fiber; hemicellulose; horticulture; humic substances; lignin; moieties; nuclear magnetic resonance spectroscopy; separators; slurries; spectrophotometers
Abstract:
... Use of stabilized composts as horticultural container media has been a fruitful and desirable alternative in utilization of agricultural wastes. We prepared compost from cattle manure and investigated the products at various stages of the composting process. The objectives of this work were to measure, quantify and correlate changes in the organic constituents of separated cattle manure (CSM—the s ...
DOI:
10.2136/sssaj1989.03615995005300060014x

13. Studies of Foam Finished Cotton Fabrics Using FT-IR Photoacoustic Spectroscopy

Author:
Charles Q. Yang; Theresa A. Perenich; William G. Fateley
Source:
Textile research journal 1989 v.59 no.10 pp. 562-568
ISSN:
0040-5175
Subject:
Fourier transform infrared spectroscopy; cellulose; cotton; cotton fabric; crosslinking; foams; methylation; photoacoustic spectroscopy; textile fibers
Abstract:
... Cotton fabrics were treated with dimethyloldihydroxyethyleneurea (DMDHEU) and methylated DMDHEU using conventional padding and a foam finishing tech nique. The finished fabrics were studied using Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS). Both finishing agents appeared to have a more homo geneous distribution in the foam finished fabrics than in the conventionally finished ...
DOI:
10.1177/004051758905901002

14. Acetonitrile and Acrylonitrile Sorption on Montmorillonite from Binary and Ternary Aqueous Solutions

Author:
Z. Z. Zhang; D. L. Sparks; N. C. Scrivner
Source:
Soil Science Society of America journal 1990 v.54 no.6 pp. 1564-1571
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acetonitrile; aqueous solutions; calcium; carbon 14; clay; magnesium; montmorillonite; organic matter; potassium; sodium; sorption; spectrometers; tracer techniques
Abstract:
... The main objective of this study was to gain mechanistic information on clay-organic interactions in aqueous environments containing multiple organics. Three different measurements were made to achieve this objective. The sorption of acetonitrile and acrylonitrile on K, Na, Ca, and Mg montmorillonite from binary and ternary aqueous solutions were determined using a ¹⁴C isotope tracer method. The i ...
DOI:
10.2136/sssaj1990.03615995005400060009x

15. Humic Substances Formed during the Composting of Organic Matter

Author:
Y. Inbar; Y. Chen; Y. Hadar
Source:
Soil Science Society of America journal 1990 v.54 no.5 pp. 1316-1323
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; carbohydrates; carbon nitrogen ratio; cattle manure; chemical analysis; chemical structure; composting; composts; crude fiber; elemental composition; fulvic acids; humic acids; humification; lignin; lignin content; nuclear magnetic resonance spectroscopy; peat; plant residues; plant tissues
Abstract:
... Humic substances (HS) were extracted from separated cattle-manure compost (CSM) at various stages of decomposition. Carbon-13 nuclear magnetic resonance (¹³C-NMR) and Fourier-transform infrared (FTIR) spectroscopy measurements were performed on the purified humic acids (HA) as well as crude fiber and chemical analyses. Levels of HS extracted from the CSM samples doubled during the composting (from ...
DOI:
10.2136/sssaj1990.03615995005400050019x

16. Phosphorus Chemistry and Mineralogy in Excessively Fertilized Soils: Quantitative Analysis of Phosphorus-rich Particles

Author:
G. M. Pierzynski; T. J. Logan; S. J. Traina; J. M. Bigham
Source:
Soil Science Society of America journal 1990 v.54 no.6 pp. 1576-1583
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; aluminum; calcium; energy-dispersive X-ray analysis; fractionation; iron; particle size; phosphate minerals; phosphorus; potassium; quantitative analysis; sand; silicon; soil; soil sampling; total phosphorus; transmission electron microscopy; Illinois; Michigan; New York; Wisconsin
Abstract:
... There has been little success with direct methodologies in isolating or characterizing phosphate minerals or P-bearing solids in soils, due primarily to the fact that P solids represent a relatively minor component of the soil matrix. This study was conducted to evaluate a method for concentrating P in soils and to characterize P-solids phases by a variety of direct mineralogical methods. Eleven s ...
DOI:
10.2136/sssaj1990.03615995005400060011x

17. Regulation Mechanisms and Field Implications of Ammonia Bonding with Various Crystalline Salts

Author:
V. P. Evangelou
Source:
Soil Science Society of America journal 1990 v.54 no.2 pp. 394-398
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; ammonia; ammonium; ammonium carbonate; calcium; calcium chloride; calcium sulfate; chlorine; fertilizers; magnesium; magnesium chloride; magnesium sulfate; metal ions; soil pH; solubility; urea; volatilization
Abstract:
... Ammonia volatilization following surface application of urea or inorganic NH₄ salts can be reduced by the addition of CaCl₂, MgCl₂, or MgSO₄ salts. The mechanisms for this phenomenon are reported to be: (i) precipitation of CO²⁻₃ by Ca²⁺ or Mg²⁺, preventing (NH₄)₂CO₃ formation and (ii) Ca²⁺ depression of soil pH by suppression of the dissociation of the CaCO₃-Ca(OH)₂ buffer system. Using Fourier-t ...
DOI:
10.2136/sssaj1990.03615995005400020016x

18. Relationship between Soil Aliphatic Fraction Extracted with Supercritical Hexane, Soil Microbial Biomass, and Soil Aggregate Stability

Author:
P. Capriel; T. Beck; H. Borchert; P. Härter
Source:
Soil Science Society of America journal 1990 v.54 no.2 pp. 415-420
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; aggregate stability; agricultural management; carbon; hexane; hydrophobicity; microbial biomass; nuclear magnetic resonance spectroscopy; soil aggregates; soil microorganisms; soil organic matter; stable isotopes
Abstract:
... Although the aliphatic component represents an important fraction of the soil organic matter, there is still a lack of information concerning its origin, chemistry, and role. The influence of agricultural management on the quality and quantity of the aliphatic fraction extracted with supercritical n-hexane and the correlation between this fraction, soil biomass, and soil aggregate stability was in ...
DOI:
10.2136/sssaj1990.03615995005400020020x

19. Sorption and Desorption of Acetonitrile on Montmorillonite from Aqueous Solutions

Author:
Z. Z. Zhang; D. L. Sparks; R. A. Pease
Source:
Soil Science Society of America journal 1990 v.54 no.2 pp. 351-356
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acetonitrile; aqueous solutions; calcium; carbon 14; clay; desorption; endothermy; heat production; isotope labeling; magnesium; montmorillonite; organic matter; potassium; sodium; sorption; sorption isotherms
Abstract:
... The sorption and desorption of acetonitrile on K, Na, Ca, and Mg montmorillonite from aqueous solutions were determined using a ¹⁴C isotope tracer method. The heat of sorption of acetonitrile on K, Na, and Ca montmorillonite at two concentrations was determined using a Calvet microcalorimeter. The infrared spectra of the clay-water-organic systems were recorded on a Fourier-transform infrared spec ...
DOI:
10.2136/sssaj1990.03615995005400020009x

20. Spectroscopic investigations of peat-water interactions: an ESR, FT-IR, and NMR study

Author:
Holmgren, A.; Wikander, G.; Norden, B.
Source:
Soil science 1990 v.149 no.5 pp. 279-291
ISSN:
0038-075X
Subject:
peat; nuclear magnetic resonance spectroscopy; water; electron paramagnetic resonance spectroscopy; Fourier transform infrared spectroscopy; humification
DOI:
10.1097/00010694-199005000-00005