Investigation of solid sample microhomogeneity by laser microanalysis

1988 ◽  
Vol 332 (1) ◽  
pp. 22-27 ◽  
Author(s):  
L. Nikolova ◽  
N. Krasnobaeva
Keyword(s):  
Solid Sample ◽  
Laser Microanalysis

A Novel Method for 13C-NMR Spectroscopy of Polymer in Emulsion: Quantitative Analysis of Microstructure of Crosslinked Polybutadiene in Latex

1999 ◽  
Vol 72 (5) ◽  
pp. 844-853 ◽  
Author(s):  
Seiichi Kawahara ◽  
Saori Bushimata ◽  
Takashi Sugiyama ◽  
Chihiro Hashimoto ◽  
Yasuyuki Tanaka
Keyword(s):  
Nmr Spectroscopy ◽  
High Resolution ◽  
13C Nmr ◽  
Lattice Relaxation ◽  
13C Nmr Spectroscopy ◽  
Lattice Relaxation Time ◽  
Solid Sample ◽  
Spin Lattice Relaxation ◽  
High Resolution Spectrum ◽  
C Nmr

Abstract A novel analytical method using high resolution 13C-NMR spectroscopy to study polymer latex, which is a heterogeneous system comprising polymer dispersoid and water, is described. The appropriate concentrations of surfactant and dried rubber content of a polybutadiene latex, which give the best spectrum, were found to be 1 w/v % and 10%, respectively. The half-widths of resonance peaks for the latex sample were almost identical to the half-widths obtained in solution, which were about one-third the width of those obtained using a solid sample of either a crosslinked or soluble polybutadiene. Nevertheless, the signal to noise ratio for the latex sample was slightly smaller than that for the solution sample. The values of spin-lattice relaxation time, T1, for the latex sample were similar to those for the solid sample. These demonstrate that the latex state C-NMR spectroscopy will be a powerful technique for structural characterization of crosslinked gels in the dispersoid because it gives a high resolution spectrum comparable to solution state spectroscopy, showing short T1 values corresponding to those for solid state C-NMR spectroscopy. High resolution latex state 13C-NMR spectroscopy was used to determine the concentrations of the various isomers of the polybutadiene in the dispersoid.

X-ray conversion of ultra-short laser pulses on a solid sample: Role of electron waves excited in the pre-plasma

2014 ◽  
Vol 21 (7) ◽  
pp. 072108 ◽  
Author(s):  
F. Baffigi ◽  
G. Cristoforetti ◽  
L. Fulgentini ◽  
A. Giulietti ◽  
P. Koester ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Solid Sample ◽  
X Ray ◽  
Short Laser Pulses

Liquid-Solid Sample Preparation

1986 ◽  
pp. 235-242 ◽  
Author(s):  
R. D. McDowall ◽  
J. C. Pearce ◽  
G. S. Murkitt ◽  
R. M. Lee
Keyword(s):  
Sample Preparation ◽  
Solid Sample

scholarly journals Supplemental Material: Experimental constraints on nonskeletal CaCO3 precipitation from Proterozoic seawater

2020 ◽  
Author(s):  
Sascha Roest-Ellis ◽  
et al.
Keyword(s):  
Experimental Method ◽  
Solid Sample ◽  
Sample Characterization

Experimental method with figures, solution compositions, and solid sample characterization.<br>

Applications of the Rotating Solid Sample Technique in Raman Spectroscopy

1972 ◽  
Vol 26 (6) ◽  
pp. 589-593 ◽  
Author(s):  
Howard J. Sloane ◽  
R. B. Cook
Keyword(s):  
Raman Spectroscopy ◽  
General Solution ◽  
Laser Beam ◽  
Resonance Raman ◽  
Solid Sample ◽  
Energy Losses ◽  
Solid Samples ◽  
Pale Yellow ◽  
Sample Technique ◽  
Argon Ion

Use of a rotating solid sample device in the Raman examination of deeply colored highly absorbing samples was investigated. A wide variety of inorganic, organic, and metallorganic compounds ranging in color from pale yellow to orange-red and black were studied using 4880 Å or 5145 Å argon ion excitation. Good quality spectra were obtained from solid samples which previously were either destroyed by conventional static excitation or required defocusing or attenuation of the laser beam with attendant energy losses. The technique appears to offer a general solution to the problem of highly absorbing samples which decompose because of localized overheating by absorption of the source radiation. In some cases, resonance Raman effects may be studied.

A novel micro pressurized liquid extraction method for very rapid solid sample preparation

2015 ◽  
Vol 7 (4) ◽  
pp. 1509-1516 ◽  
Author(s):  
Fadi L. Alkhateeb ◽  
Kevin B. Thurbide
Keyword(s):  
Sample Preparation ◽  
Extraction Method ◽  
Rapid Heating ◽  
Liquid Extraction ◽  
Solid Sample ◽  
Pressurized Liquid Extraction ◽  
Static Mode

A novel micro pressurized liquid extraction (μPLE) method is introduced, which employs rapid heating in a static mode to remove analytes from 5–10 mg samples in as little as 10 seconds using only 125 μL of solvent.

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