FTIR spectroscopy Articles
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Effect of streptavidin functionalised Fe 3 O 4 on the sedimentation of starch
Sedimentation velocity of starch was determined at three different pH in the presence of streptavidin functionalised Fe 3 O 4 nanoparticle. In the first step, the streptavidin functionalised Fe 3 O 4 nanoparticle was synthesised and characterised by various analytical techniques like Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) method, vibrating sample ...
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Analyze FAME in Diesel using FTIR | Spectroscopy Solutions
Biodiesel is a promising alternative to diesel produced from fossil fuels, however barriers still exist towards the creation of high efficiency biodiesel. The fatty acid methyl ester (FAME) content of biodiesels significantly affects their quality and performance. Fourier transform infrared (FTIR) spectroscopy using the Pearl™ liquid transmission unit from Specac provides a quick, easy, and ...
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Quantitative analysis of automotive exhaust gas by Fourier Transform Infrared spectroscopy
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 were shown to be as low as 80 ppm. The variation ...
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Adsorption of lead using a novel xanthated carboxymethyl chitosan
Adsorption of Pb(II) was studied using a novel xanthated carboxymethyl chitosan (XCC). The XCC was synthesized using the xanthation reaction of N-carboxymethyl chitosan (NCMC). The chemical structure of XCC was characterized by UV–visible spectra. The effects of initial pH value of the solutions, contact time and adsorption isotherms on adsorption of Pb(II) were investigated. Moreover, ...
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Change of surface and structure properties of cation exchange membrane in a microbial fuel cell
In this study, the two–chambered microbial fuel cell (MFC) was continuously long–term operated a young landfill leachate in order to evaluate the impact of cation exchange membrane (CEM) fouling on MFC performance. During the operation, the voltage output decreased sharply to almost zero and the voltage output was recovered completely after replacement of CEM, which implied that the voltage ...
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Ammonium removal from aqueous solutions by zeolite adsorption together with chemical precipitation
The aim of this study was to remove ammonium from aqueous solution and recycle ammonium. Ammonium removal from aqueous solution by natural and pretreated zeolites, breakthrough curve, chemical regeneration of pretreated zeolite, ammonium removal from regeneration solution by chemical precipitation and NH4+ adsorption isotherms were investigated by conducting a series of batch and continuous ...
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Monitoring the performance of moisture purifiers for process gases
Problem Statement Moisture purifiers are a big aid in keeping moisture levels under control inside a process chamber. They are provided by manufacturers with certain life expectancies, which vary depending on the moisture content of the gas being purified. As a result, it is difficult to determine which gases have a high moisture content and which moisture purifier is becoming saturated. IRGAS ...
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Physico-chemical properties of SiOXNY thin films
The physico-chemical properties of silicon oxynitride (SiOXNY) thin films deposited by plasma enhanced chemical vapour deposition technique (PECVD) from a mixture of SiH4, NH3, N2O and N2 have been studied. The N2O flow rate was varied from 0 to 75 standard cubic centimetres per minute (sccm). When the oxygen content in the plasma is increased, the deposit composition changed from SiNx to SiOXNY. ...
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FTIR resolution requirements for industrial gas analyzers
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 combustion thermodynamics and stack gas emissions; ...
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Fourier transform infrared spectroscopic investigation of humic substance samples of different origin and typology supported by chemometric tools
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 samples examined and which are hardly detectable ...
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Your new favourite analysis method: spectroscopy highlights
By 2020 the process spectroscopy sector is anticipated to be worth billions by 2020. What does this mean for Fourier Transform Infrared spectroscopy (FTIR)? The versatile technique is taking over due to how quick, easy and accurate its analysis is. Below are some interesting applications for which spectroscopy equipment was used. An electronic tongue(!) Henry VIII and Ivan the Terrible ...
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Aerobic co-treatment of landfill leachate and domestic wastewater – are slowly biodegradable organics removed or simply diluted?
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 tested volumetric ratios were 0%, 0.2%, ...
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Detection and measurement of toxic gases from destructive testing of batteries
Problem Statement New formulations of organic-compound-based batteries for vehicle use must be tested for release of potentially harmful and toxic gases if crushed in accidents. Potential gases include hydrocarbons, fluorocarbons, and hydrogen fluoride, released within seconds of an incident. Actual time-resolved and quantitative data are required from destructive testing to ascertain the ...
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Continuous monitoring of moisture present inside a process chamber
Problem Statement Moisture inside a process chamber is a big silent killer during wafer production. When production yield goes down, it is hard to pinpoint the source of the problem. Most of the time wafers need to be sent to labs for analysis, while production is stopped. If the problem is related to a high level of moisture inside the reactor, there are several factors that can cause this ...
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Measurement of ammonia emissions using various techniques in a comparative tunnel study
A field-based intercomparison study for ammonia measurements was conducted using seven analytical methods. It included sulphuric acid impinger, citric acid denuder, differential optical absorption spectroscopy (DOAS), Fourier transform infrared spectroscopy (FTIR), photoacoustic spectroscopy (PAS), and continuous aqueous extraction followed by measurement of conductivity (Airrmonia). Measurements ...
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The combined effects of carbon/nitrogen ratio, suspended biomass, hydraulic retention time and dissolved oxygen on nutrient removal in a laboratory-scale anaerobic–anoxic–oxic activated sludge biofilm reactor
The current trend in sustainable development deals mainly with environmental management. There is a need for economically affordable, advanced treatment methods for the proper treatment and management of domestic wastewater containing excess nutrients (such as nitrogen and phosphorus) which can cause eutrophication. The reduction of the excess nutrient content of wastewater by appropriate ...
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Synthetic organic polymer fouling in municipal wastewater reuse reverse osmosis
A full scale waste water reuse plant suffered from irreversible fouling of the reverse osmosis (RO) membranes. The major suspect of fouling is cationic organic polymers applied in the wastewater sludge treatment. Thus, the purpose of this research is to study the effect of six cationic polymers, applied in the plant, on RO membrane performance. The filtration and adsorption experiments with 4 ...
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Using FTIR spectroscopy to measure hydrocarbon pollution in water
According to the World Health Organization (WHO) and UNICEF’s 2015 Progress on Sanitation and Drinking Water report almost 700 million people around the world don’t have access to clean drinking water [1]. Poor water quality is beginning to return to the developed world too. The strain of population growth, intensified agricultural practices and continued industrial expansion have ...
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Cannabis Oil Analysis using FTIR | Spectroscopy Solutions
A range of cannabis derivatives are commercially available for purchase across the world's markets. Country-to-country, the legality of these products differs. In Europe, products that contain higher levels of THC (tetrahydrocannabinol) than 0.2% are generally prohibited. That said, CBD (cannabidiol) isn't restricted and is actually advertised as offering pharmaceutical benefits. Advertised ...
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Optical couplers: key hardware for high quality FTIR spectroscopy
Description Optical couplers are used to take the light coming from the source of a FTIR and route it through the sampling accessory and into the FTIR detector. This is an essential process in the effective use of the FTIR spectrometer. Therefore, optical couplers play an essential role in the proper use and maintenance of a FTIR system. Recognizing the importance of optical couplers to the ...
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