Indirect introduction of liquid samples in gas correlation chromatography

1993 ◽  
Vol 639 (2) ◽  
pp. 207-214
Author(s):  
D.J. Louwerse ◽  
H.C. Smit
Keyword(s):  
Liquid Samples ◽  
Correlation Chromatography

INFRARED PHOTOACOUSTIC SPECTROMETER AND DATA ANALYSIS FOR HETEROGENEOUS OR LIQUID SAMPLES

1983 ◽  
Vol 44 (C6) ◽  
pp. C6-165-C6-170
Author(s):  
G. Rousset ◽  
J. P. Monchalin ◽  
L. Bertrand
Keyword(s):  
Data Analysis ◽  
Liquid Samples ◽  
Photoacoustic Spectrometer

Multi-Component Analysis of Liquid Samples by FTIR

2019 ◽  
Author(s):  
Andreas Grimstvedt ◽  
Merete Wiig ◽  
Aslak Einbu ◽  
Ugochukwu Edwin Aronu ◽  
Solrun Johanne Vevelstad
Keyword(s):  
Component Analysis ◽  
Liquid Samples

scholarly journals Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3385
Author(s):  
Jialu Ma ◽  
Jingchao Tang ◽  
Kaicheng Wang ◽  
Lianghao Guo ◽  
Yubin Gong ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Complex Permittivity ◽  
Ring Resonator ◽  
High Sensitivity ◽  
Split Ring Resonator ◽  
Debye Model ◽  
Split Ring ◽  
Liquid Samples ◽  
Microwave Sensor

A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz. The liquid samples in capillary are placed in the resonant zone of the fabricated senor for high sensitivity measurement. The frequency shift of 58.7 MHz is achieved when the capillary is filled with ethanol, corresponding a sensitivity of 97.46 MHz/μL. The complex permittivity of methanol, ethanol, isopropanol (IPA) and deionized water at the resonant frequency are measured and calibrated by the first order Debye model. Then, the complex permittivity of different concentrations of aqueous solutions of these materials are measured by using the calibrated sensor system. The results show that the proposed sensor has high sensitivity and accuracy in measuring the complex permittivity of liquid samples with volumes as small as 0.13 μL. It provides a useful reference for the complex permittivity characterization of small amount of liquid chemical samples. In addition, the characterization of an important biological sample (inositol) is carried out by using the proposed sensor.

scholarly journals An interface for the direct coupling of small liquid samples to AMS

2015 ◽  
Vol 361 ◽  
pp. 173-177 ◽  
Author(s):  
T.J. Ognibene ◽  
A.T. Thomas ◽  
P.F. Daley ◽  
G. Bench ◽  
K.W. Turteltaub
Keyword(s):  
Direct Coupling ◽  
Liquid Samples

Thermal Property Measurements on Biological Materials at Subzero Temperatures

1991 ◽  
Vol 113 (4) ◽  
pp. 423-429 ◽  
Author(s):  
Xuemei Bai ◽  
David E. Pegg
Keyword(s):  
Thermal Conductivity ◽  
Low Temperatures ◽  
The Self ◽  
Rabbit Kidney ◽  
Kidney Cortex ◽  
Low Viscosity ◽  
Subzero Temperatures ◽  
Liquid Samples ◽  
Thermal Probes ◽  
Low Ionic Strength

The self-heated thermistor technique was used to measure the thermal conductivity and thermal diffusivity of biomaterials at low temperatures. Thermal standards were selected to calibrate the system at temperatures from −10°C to −70°C. The thermal probes were constructed with a convection barrier which eliminates convection inside liquid samples of low viscosity, without affecting the conductivity and diffusivity results. Using this technique, the thermal conductivity and diffusivity of two organ perfusates (HP5 and HP5 + 2M glycerol), one kidney phantom (a low ionic strength gel), as well as rabbit kidney cortex have been measured from −10°C to −70°C.

Photodegradation of Polychlorinated Dibenzo-p-dioxins in Liquid Samples by Near UV Light Irradiation

1996 ◽  
Vol 54 (4) ◽  
pp. 331-337 ◽  
Author(s):  
M.Perla Colombini ◽  
Fabio Di Francesco ◽  
Roger Fuoco
Keyword(s):  
Uv Light ◽  
Light Irradiation ◽  
Liquid Samples ◽  
Uv Light Irradiation

ANALYSIS OF MULTI-ELEMENT POWDERS AND SOLUTIONS OF METALS WITH A PYROELECTRIC X-RAY GENERATOR

2005 ◽  
Vol 15 (01n02) ◽  
pp. 19-25 ◽  
Author(s):  
TETSUYA KOYAMA ◽  
JUN KAWAI
Keyword(s):  
Low Power ◽  
Background Level ◽  
Solid Samples ◽  
Portable Xrf ◽  
X Ray ◽  
Metal Elements ◽  
Xrf Analysis ◽  
Liquid Samples

Applications of X-ray fluorescence (XRF) analysis to solid and liquid samples with a pyroelectric X-ray generator are described. The X-ray generator is driven by a 9 V dry electric battery and small dimensions. It enables compact and portable XRF spectrometer. It has disadvantages in low power and periodically changing X-ray flux. Measured solid samples are briquettes from powdery oxides of Ti , V , Cr , Mn , Fe , Co , Ni and Cu , and sulfide of Zn . Each sample is prepared to contain equal molar metal elements. Liquid samples are solutions of Fe , Cr , Zn , Pb , Bi , Cd . K α and K β lines of all metals in solid samples are detected. Although background level was relatively high for liquids, all metals in the measured samples were detected within 70 seconds, except for Cd . The capability of XRF with the pyroelectric X-ray generator is discussed.

The Use of Reverse Mirage Spectroscopy to Determine the Absorption Coefficient of Liquid Methanol at CO2 Laser Wavelengths

1989 ◽  
Vol 43 (1) ◽  
pp. 148-153 ◽  
Author(s):  
Dane Bićanić ◽  
Siegfried Krüger ◽  
Paul Torfs ◽  
Bruno Bein ◽  
Frans Harren
Keyword(s):  
Absorption Coefficient ◽  
Co2 Laser ◽  
Probe Beam ◽  
Laser Emission ◽  
Wavelength Region ◽  
Experimental Setup ◽  
Absorption Coefficients ◽  
Experimental Conditions ◽  
Liquid Samples

An experimental setup for performance of reverse mirage spectroscopy at CO2 laser wavelengths on liquid samples having high values of absorption coefficients is described. One and the same liquid is used as both the absorbing and deflecting medium. The Rosencwaig-Gersho theory has been applied, and the choice of experimental conditions that would enable determination of absorption coefficient β from the magnitude of photothermal signals measured at two different probe beam distances (probing locations) is discussed. The usefulness of this technique (essentially not inhibited by the requirements imposed on the sample's thickness) is tested on methanol having absorption coefficients β close to 300 cm−1 in the wavelength region covered by CO2 laser emission.

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