ftir Articles

223 Results found

Wastewater treatment plant monitors Greenhouse Gas emissions

by Gasmet Technologies Oy  (Apr. 16, 2014)

Globally, little attention is paid to gaseous emissions from wastewater treatment processes. This contrasts greatly with the regulatory monitoring that is applied to the quality of water emissions from such facilities. However, in Helsinki, Finland, a large municipal wastewater treatment facility continuously monitors its emissions of greenhouse ...

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 ...

FTIR analyser improves anaesthetic gas detection at Torbay Hospital

by Gasmet Technologies Oy  (Dec. 10, 2013)

A unique gas measurement technology has enabled South Devon Healthcare’s Pharmacy Manufacturing Unit (PMU) at Torbay Hospital to conduct highly effective and detailed analysis of anaesthetic gases in a variety of hospital locations. The primary function of the PMU’s quality control department is to check active ingredient levels and ...

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 ...

FTIR gas analysis improves container safety

by Gasmet Technologies Oy  (Feb. 22, 2013)

Introduction Entry to freight containers represents a significant hazard to staff responsible for inspection, stuffing or destuffing because of the large number of airborne chemicals that can be present. Research in Germany and the Netherlands found hazardous levels of gases and vapours in around 20% of all containers and this level of ...

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, ...

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 ...

Steam–activated carbon prepared from Chrysophyllum albidum seed shell for the adsorption of cadmium in wastewater: kinetics, equilibrium and thermodynamic studies

by Inderscience Publishers  (Aug. 1, 2013)

Steam–Activated Carbon (SAC) prepared from shell of the seed of Chrysophyllum albidum was used to adsorb cadmium (Cd) ion from aqueous solution. The sorption process with respect to its equilibria, kinetics and thermodynamics as well as the effects of pH, contact time, adsorbent mass, adsorbate concentration and particle size on adsorption was ...

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 ...

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 ...

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