Showing results for: spectroscopy monitoring Articles
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Fabrication of homogeneous nanoparticle/nanoneedle BaTiO3 and Ba0.8Sr0.2TiO
Ferroelectric BaTiO3 (BTO) and Ba0.8Sr0.2TiO3 (BSTO) thin film materials have been successfully prepared by sol-gel processing and simple dip coating on glass and silicon supports. Above thin films were characterised by x-ray diffraction (XRD), Raman spectroscopy, photoelectron spectroscopy, thermal analysis, atomic force microscopy (AFM) and spectroscopic ellipsometry. Phase identification of ...
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Five myths about online dispersive NIR spectroscopy, FT-NIR, and FT-IR - Part 2
In the first part of this series, a brief historical overview was given for both infrared (IR) and near-infrared (NIR) spectroscopy, as well as for Fourier transformation (FT) and dispersive spectroscopy. A few myths were discussed and put to rest, and we showed that Fourier transformation spectroscopy (FT-NIR) is not necessarily the only nor the best way to integrate reproducible spectroscopic ...
By Metrohm AG
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Fabrication of homogeneous nanoparticle/nanoneedle BaTiO3 and Ba0.8Sr0.2TiO3 smooth thin films by simple dip coating
Ferroelectric BaTiO3 (BTO) and Ba0.8Sr0.2TiO3 (BSTO) thin film materials have been successfully prepared by sol-gel processing and simple dip coating on glass and silicon supports. Above thin films were characterised by x-ray diffraction (XRD), Raman spectroscopy, photoelectron spectroscopy, thermal analysis, atomic force microscopy (AFM) and spectroscopic ellipsometry. Phase identification of ...
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New Process Gas Analyzer for the Measurement of Water Vapor
KEYWORDS TDLAS, WMS, Laser Spectroscopy, Water Vapor Measurement, Gas Analyzer ABSTRACT A new analyzer for the measurement of water vapor concentration based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) was developed. The water-vapor line at 1854-nm was selected for the measurement, and the performance of the system was evaluated on different background eases to confirm that the ...
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Combining Spectroscopy and Separation Science in Process and Emissions Monitoring
ABSTRACT Ultraviolet (UV) absorption spectroscopy provides rapid real-time analysis of many species of interest to industrial monitoring. In some applications, the presence of other interfering species obfuscates the measurement of interest and makes accurate and reliable analysis of trace components difficult. The use of auto-carrier, frontal elution chromatography in conjunction with a process ...
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How to Compose a Road Weather Information System (RWIS)?
Ice detection systems Ice detection systems are mainly used for winter service and provide information on wind strengths, wind directions, precipitation, barometric pressure, temperatures and relative humidity. For this, about 70% of our customers use the Lufft WS600 all-in-one weather sensor, which covers all the mentioned parameters simultaneously. In addition, a road weather sensor is ...
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Spectroscopic surface sensor StaRWIS monitors FSK Bridge in Maryland - Case study
In search of a suitable sensor for monitoring the Francis Scott Bridge in Maryland, Lufft USA's partner Communication Electronics, commissioned by the Maryland Transportation Authority, came across our new StaRWIS through our website. In February 2018, they installed the StaRWIS on the Bridge and it has delivered satisfying results every since. The sensor was convincing due to its easy ...
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A soil column study to evaluate treatment of trace elements from saline industrial wastewater
Industrial wastewater from the flue gas desulfurization (FGD) process is characterized by the presence of trace elements of concern, such as selenium (Se) and boron (B) and relatively high salinity. To simulate treatment that FGD wastewater undergoes during transport through soils in subsurface treatment systems, a column study (140-d duration) was conducted with native Kansas soil and saline ...
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Application of Mossbauer and positron annihilation spectroscopies for monitoring of WWER RPV steel degradation
This paper describes the application of Mossbauer Spectroscopy (MS) and Positron Annihilation Spectroscopy (PAS) to evaluate the microstructure parameters of materials. These methods are used to collect additional characteristics for understanding of degradation processes in Reactor Pressure Vessel (RPV) steels. Samples from the Russian 15Kh2MFA and Sv10KhMFT steels, commercially used at WWER-440 ...
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International Day of Light
The International Day of Light is celebrated annually on the 16th of May, the anniversary of the first successful use of the laser. The event is a global initiative to highlight the role light plays in all aspects of life, from science to art and education.1 The broad applications of light covers research areas such as medicine to renewable energy and is supported by UNESCO to help achieve their ...
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What is Transient Absorption Spectroscopy?
Transient absorption (TA) spectroscopy, also known as flash photolysis, is a pump-probe spectroscopic technique utilised to measure the photogenerated excited state absorption energies and associated lifetimes of molecules, materials, and devices. The pump-probe technique can be described by a sample being photo-excited by a light source (pump pulse), whereby a second light source (probe pulse) ...
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A novel spectrometer design for process and handheld infrared spectral measurements
Introduction Infrared spectroscopy offers many unique advantages for measurements within an industrial environment. Historically, the technique has been used for a broad range of applications from the composition of gas and liquid mixtures to the analysis of trace components for gas purity analysis. In cases where a well-defined method of analysis is involved, such as the measurement of ...
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What is a Spectrometer?
The characteristics of a white LED light differs greatly, when compared to a yellow CFL. Without any special tools, one can see that the LED emits a clear white color, while the CFL generates yellow light. Going one step further, using a spectrometer, one will be able to “dissect” the light sources and see that they are composed of other colors in the visible light spectrum, such as ...
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Dispersed/flocculated size characterization of alumina particles in highly concentrated slurries by ultrasonic attenuation spectroscopy
In recent years, several advances have been made in ultrasonic attenuation spectroscopy for monitoring particle size distributions of highly concentrated slurries. This paper presents experimental proof that ultrasonic attenuation spectroscopy is capable of characterizing dispersed or flocculated particle size in highly concentrated slurries. Well-characterized alumina was used for testing the ...
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Optical in situ characterisation of carbon nanotube growth
In situ optical characterisation of carbon nanotube growth is reported. The nanotubes are grown on a micro–scale heater using chemical vapour deposition (CVD). Optical emission is used to characterise the temperature of the small–scale heater prior to and during growth and to monitor any temperature changes due to the interaction of the growing nanotubes with the cold gas atmosphere. In situ ...
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What is UV-DOAS?
What is UV-DOAS? UVDOAS (Ultraviolet Differential Optical Absorption Spectroscopy) is a monitoring technique which uses the absorbance of UV light to identify and quantify gases within a sample. Gases absorb unique wavelengths of light, creating a unique fingerprint of each compound within the absorbance spectrum; the amplitude of the absorbance wavelength is proportional to the concentration of ...
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Leachate dissolved organic matter characterization using spectroscopic methods
This study investigated the use of ultraviolet (UV) and fluorescence spectroscopy to monitor the changes in biodegradability of dissolved organic matter (DOM) in landfill leachates. Experiments to investigate aerobic biodegradation of leachate DOM were carried out using untreated and treated leachate samples collected from two UK municipal solid waste landfills, L1 and L2. Leachate samples ...
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Introducing the Knowledge Center
Want to learn more about analyzing critical fluids like lubrication oil? Check out our NEW Knowledge Center. Our mission at Spectro Scientific is to enable our customers to always make confident, knowledge-based decisions about their valuable assets and machinery. Whether you are testing motor oil, hydraulic fluid, fuel or coolant, we want to give you the information you need to make these ...
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Understanding UV-DOAS Gas Sensors: A Comprehensive Analysis!
Welcome! You’ll learn a lot about UV-DOAS Gas Sensors here. Your journey will start with basic UV-DOAS technology. Next, understand its components and types of gases it can detect. You’ll also dive into how it calibrates, and its limits. Compare it with other gas sensors too. Finally, explore how it manages data. Now, start your exciting, enlightening ...
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NIR spectroscopy in the petrochemical and refinery industry: The ASTM compliant tool for QC and product screening - Part 5
History of ASTM International The American Society for Testing and Materials (ASTM) is an organization that currently provides over 12,500 international standards. Its roots date back to 1898, when ASTM was formed by a group of scientists and engineers to address the frequent rail breaks affecting the fast-growing railroad industry. The group developed a standard for the steel used to fabricate ...
By Metrohm AG
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