ftir Articles

254 Results found

Monitoring greenhouse gases from biofuel crops

by Gasmet Technologies Oy  (Jan. 10, 2015)

Global issues such as climate change and energy security have driven rapid growth in renewable energy production - wind, solar, tidal, geothermal, hydro, biofuels etc. However, logically, each of these methods should deliver a net benefit in terms of greenhouse gas (GHG) reduction, so researchers in the United States have employed portable FTIR ...

Transformation characteristics of organic pollutants in Fered-Fenton process for dry-spun acrylic fiber wastewater treatment

by IWA Publishing  (Dec. 19, 2014)

The Fered-Fenton process using Ti sheet as cathode and RuO2/Ti as anode was employed for the pretreatment of dry-spun acrylic fiber manufacturing wastewater. The effects of feeding mode and concentration of H2O2 on chemical oxygen demand (COD) removal efficiency as well as the biodegradability variation during the Fered-Fenton process were ...

The African crested rat’s poisonous hairs studied by attenuated total reflection infrared spectroscopy case study

by Specac Limited  (Nov. 25, 2014)

Introduction Plant toxins are commonly used by many invertebrates, as an effective defence against predation. However, such behaviour has recently been observed in a mammal.1 The African crested rat, Lophiomys imhausi, applies a potent toxin to the fur alongside its flanks. It acquires this toxin from Acokanthera schimperi,1 a shrub abundant in ...

Gemas: Prediction of solid‐solution phase partitioning coefficients (Kd) for oxoanions and boric acid in soils using mid‐infrared diffuse reflectance spectroscopy

by John Wiley & Sons, Ltd.  (Dec. 5, 2014)

The authors' aim was to develop rapid and inexpensive regression models for the prediction of partitioning coefficients (Kd), defined as the ratio of the total or surface‐bound metal/metalloid concentration of the solid phase to the total concentration in the solution phase. Values of Kd were measured for boric acid (B(OH)30) and selected added ...

Aerobic co-treatment of landfill leachate and domestic wastewater – are slowly biodegradable organics removed or simply diluted?

by IWA Publishing  (Dec. 19, 2014)

This study investigated the co-treatment of landfill leachate/domestic wastewater in bench-scale activated sludge (AS) reactors to determine whether the slowly biodegradable organic matter (SBOM) was removed rather than diluted. The AS reactors were loaded with mixtures of raw leachate and leachate that was pretreated by air stripping. The ...

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, ...

Transformation and destabilization of graphene oxide in reducing aqueous solutions containing sulfide

by John Wiley & Sons, Ltd.  (Aug. 26, 2014)

The colloidal stability of carbon nanomaterials is a key factor controlling their fate and bioavailability in natural aquatic systems. We reported herein that graphene oxide (GO) nanoparticles could be destabilized in reducing aqueous solutions containing a low concentration (0.5 mM) of sulfide, a naturally occurring reductant. Spectroscopic ...

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 ...

Prediction of solid‐solution partitioning coefficients (Kd) for cationic metals in soils using mid‐infrared diffuse reflectance spectroscopy

by John Wiley & Sons, Ltd.  (Sep. 1, 2014)

Partial least squares regression (PLSR) models, using mid‐infrared (MIR) diffuse reflectance Fourier transformed (DRIFT) spectra, were used to predict distribution coefficient (Kd) values for selected added soluble metal cations (Ag+, Co2+, Cu2+, Mn2+, Ni2+, Pb2+, Sn4+, and Zn2+) in 4813 soils of the Geochemical Mapping of Agricultural Soils ...

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