ftir Articles

278 Results found

Quantitative analysis of automotive exhaust gas by Fourier Transform Infrared spectroscopy

by Inderscience Publishers  (Aug. 2, 2010)

For monitoring gaseous emissions from muffler, instruments presently used can only measure quantitatively a given pollutant. Fourier Transform Infrared (FTIR) spectroscopy can provide quantitative and online real time analysis. Calibration of our FTIR spectrometer with CO, CO2, NO, NO2 and N2O was done and the limits of quantification obtained ...

FT-IR spectroscopy as a tool for identification of apoptosis-induced structural changes in A549 cells treated with PM 701

by Inderscience Publishers  (Aug. 10, 2009)

Fourier transform infrared (FTIR) spectroscopy has been found useful for detecting apoptotic changes induced in human lung cancer cells (A549) that treated with PM 701 (natural product) in tissue culture level. Characteristic bands alterations were identified in the apoptotic cells arising from cellular protein, lipid and DNA, there were specific ...

On the Application of Open-Path Fourier Transform Infrared Spectroscopy to Measure Aerosols: Observations of Water Droplets

by ARCADIS  (Jun. 1, 1999)

ABSTRACT This paper proposes the application of Open-Path Fourier Transform Infra-Red (OP-FTIR) spectroscopy to measure aerosols. A preliminary experiment conducted in a standard shower chamber generated a condensed water aerosol cloud. The OP-FTIR beam acquired spectra through the ...

Fourier transform infrared spectroscopic investigation of humic substance samples of different origin and typology supported by chemometric tools

by Inderscience Publishers  (Jul. 18, 2011)

In this paper 198 FTIR spectra of humic substance (HS) extracted from lake, marine sediments, soils and by Antarctic seawater were examined by Principal Component Analysis (PCA), Independent Component Analysis (ICA) and Two-dimensional Mapping (2DMAP) to identify the compositional and structural characteristics which characterise the typologies of ...

Field Evaluation of a Method for Estimating Gaseous Fluxes from Area Sources Using Open-Path Fourier Transform Infrared

by ARCADIS  (Apr. 25, 2001)

This paper describes results from the first field experiment designed to evaluate a new approach for quantifying gaseous fugitive emissions of area air pollution sources. The approach combines path-integrated concentration data acquired with any path-integrated optical remote sensing (PI-ORS) technique and computed tomography (CT) technique. In ...

FTIR Spectroscopy

by CIC Photonics, Inc.  (Aug. 9, 2011)

Fourier Transform Infrared (FTIR) Spectroscopy bases its functionality on the principle that almost all molecules absorb infrared light. Only the monatomic (He, Ne, Ar, etc) and homopolar diatomic (H2, N2, O2, etc) molecules do not absorb infrared light. Molecules only absorb infrared light at those frequencies where the infrared light affects the ...

Evolution of Data Management at Antea Group

by EarthSoft, Inc  (Jul. 2, 2015)

Background Antea Group (Delta Environmental) thrived in the atmosphere of the 90’s UST boom Retail petroleum focused for many years Project teams were local/regional with little resource sharing An Enterprise Solution was needed Began with EQuIS on a remote desktop platform Enterprise was ...

FTIR resolution requirements for industrial gas analyses

by CIC Photonics, Inc.  (May 1, 2013)

FTIR Spectroscopy FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epitreatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D faciltities, ...

FTIR resolution requirements for industrial gas analyzers

by CIC Photonics, Inc.  (Aug. 9, 2011)

FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epi-treatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D facilities, FTIR is applied to ...

Effects of pH on chromate(VI) adsorption by Spirulina platensis biomass: batch tests and FT-IR studies

by IWA Publishing  (May 9, 2013)

Raw and methylated biomass of Spirulina platensis was employed in chromate batch adsorption tests at pH range 1–7. The acid conditions seemed to favour the removal of chromium (Cr) with a yield of 87.0 and 97.6% by using raw and methylated biomass, respectively. However, the chromate and total chromium determination, carried out in ...

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