fluorescence spectroscopy Articles
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Spectroscopic analysis of boron porphyrin complexes
Spectroscopic analyses of diboron porphyrin complexes have been performed using femtosecond transient absorption spectroscopy, fluorescence spectroscopy measurements, IR and Raman spectroscopy as well as DFT and TDDFT calculations. Transient absorption spectroscopy was used to study the dynamics of the transient species by exciting the molecule with a ~100 fs pulse of light at the wavelength ...
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Fluorescence Spectroscopy: Measuring Fluorescence from a Sample
Fluorescence spectroscopy is a widespread analytical technique, often used for the analysis of a sample by defining the concentration of a chemical substance in a sample. However, measuring fluorescence from unknown samples can often be challenging even for experienced users. Below is a procedure for spectral measurements to help newcomers in the fluorescence spectroscopy field. Our posts on the ...
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Three-dimensional excitation emission matrix fluorescence spectroscopy and gel-permeating chromatography to characterize extracellular polymeric substances in aerobic granulation
Three-dimensional excitation emission matrix (EEM) fluorescence spectroscopy and gel-permeating chromatography (GPC) were employed to characterize the extracellular polymeric substances (EPS) in aerobic granulation. EPS matrix in this study was stratified into four fractions: (1) supernatant, (2) slime, (3) loosely bound EPS (LB-EPS), and (4) tightly bound EPS (TB-EPS). The results showed that ...
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Fluorescence Spectroscopy Book List
It’s always a pleasure when we get the opportunity to talk to the next generation of new scientists. We enjoy meeting them at exhibitions, events and working with undergraduate and graduate students within the fields of photochemical and photophysics. As part of our sponsorship of the Scholarship Awards for the Southern University of Science and Technology (SUST) in Shenzen, China we are able to ...
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Characterisation of the recalcitrant organic compounds in leachates formed during the anaerobic biodegradation of waste
This study investigates the use of UV absorption and fluorescence spectroscopy to assess the early development of recalcitrant organic compounds in leachates formed during the anaerobic biodegradation of municipal solid waste. Biochemical methane potential tests were carried out on fresh waste (FW) and composted waste (CW) over a period of 150 days and leachates produced from the degradation of ...
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The interaction between natural organic matter in raw waters and pesticide residues: a three dimensional excitation–emission matrix (3DEEM) fluorescence investigation
This paper examines the interaction between dissolved natural organic matter and pesticide residues, both of which are found in raw water sources, using three dimensional excitation–emission matrix (3DEEM) fluorescence spectroscopy. It was observed that pesticide residue at 0.1 mg L−1 formed a complex with humic-like fluorophores that are commonly found in raw water samples. ...
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Glossary of Fluorescence Spectroscopy Terms
Edinburgh Instruments has compiled a glossary of all the key terms related to Fluorescence Spectroscopy. Please browse the glossary bellow to find the definition for the term you are interested in.AbsorbanceMeasure of the amplitude of absorbed energy in a spectrum related to the concentration of an analyte. This term is also referred to as the negative log (base 10) of Transmittance (-log₁₀T = ...
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Real-time monitoring of membrane bioreactors with 2D-fluorescence data and statistically based models
The application of membrane bioreactors (MBR) for wastewater treatment is growing worldwide due to their compactness and high effluent quality. However, membrane fouling, mostly associated to biological products, can reduce MBR performance. Therefore, it is important to monitor MBRs as close to real-time as possible to accelerate control actions for maximal biological and membrane performance. ...
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Spectrophotometric characterization of human impacted surface waters in the Moselle watershed
In order to characterize the pollution discharged into the Moselle River and some of its tributaries, spectroscopic techniques, namely UV–vis spectroscopy and synchronous fluorescence spectroscopy, have been combined. UV–visible spectra were analysed using the maximum of the second derivative at 225 nm (related to nitrates), the SUVA254 and E2/E3 indices (related to the nature of organic matter). ...
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The characteristics of dissolved organic matter (DOM) in storm sewer sediments and the binding interaction with Cu(II) in four typical regions in Beijing, China
In this work, dissolved organic matter (DOM) was extracted from storm sewer sediments collected in four typical regions (residential, campus, traffic and business regions) in Beijing, China. The basic characteristics of DOM were analyzed by UV–visible spectroscopy (UV–Vis), excitation-emission matrix Fluorescence Spectroscopy and Fourier Transform Infrared Spectroscopy. Furthermore, the ...
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Influence of heavy metal ions on the spectra and charge characteristics of DOM of municipal sewage secondary effluent
The spectral and charged characteristics of dissolved organic matter (DOM) in municipal sewage secondary effluent influenced by heavy metal ions were studied by three-dimensional fluorescence spectroscopy, ultraviolet spectrometry, etc. As the Cu(II) concentration increased, the fluorescence intensity of the DOM's fluorescence peak reduced. When the Cu(II) concentration was 100 μmol/L, the ...
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Troubleshooting Measurements of Fluorescence Spectra
Acquiring and interpreting steady state fluorescence spectra is not always straightforward. Below we offer some advice on commonly encountered problems to help you optimise the operation of your Edinburgh Instruments spectrometer.What to do if your Fluorescence Spectra are Distorted, Show Unexpected Peaks or StepsIf you are experiencing problems with your fluorescence spectra make sure that the ...
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Probabilistic analysis of fluorescence signals for monitoring dual reticulation water recycling schemes
Improved techniques are required for the detection of inadvertent cross-connections between recycled water and potable water systems in dual reticulation schemes. The aim of this research was to assess the potential for fluorescence spectroscopy to be developed as a tool to distinguish recycled water from potable water. Weekly grab samples of recycled and potable water were obtained over 12 weeks ...
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Probabilistic analysis of fluorescence signals for monitoring dual reticulation water recycling schemes
Improved techniques are required for the detection of inadvertent cross-connections between recycled water and potable water systems in dual reticulation schemes. The aim of this research was to assess the potential for fluorescence spectroscopy to be developed as a tool to distinguish recycled water from potable water. Weekly grab samples of recycled and potable water were obtained over 12 weeks ...
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IAFC International Hazardous Material Resource Team Conference – Booth 309
Join Christy at the IAFC’s International Hazardous Materials Response Teams Conference, booth 309 for a demonstration of our Jerome® mercury vapor analyzers and see the difference that an accurate, user friendly, reliable and durable mercury vapor analyzer can make. On display at the show: Jerome® J505 – Hand-held Atomic Fluroescence Mercury Vapor Analyzer The J505 ...
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International Conference on Mercury as a Global Pollutant – Booth 7
Join Christy at ICMGP – the International Conference on Mercury as a Global Pollutant, booth 7, for a demonstration of our Jerome® mercury vapor analyzers and see the difference that an accurate, user friendly, reliable and durable mercury vapor analyzer can make. On display at the show: Jerome® J505 – Hand-held Atomic Fluroescence Mercury Vapor Analyzer The J505 ...
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AIHce – Booth 1422
Join Jeff at AIHce, Booth 1422 for a demonstration of our Jerome® mercury vapor analyzers and see the difference that an accurate, user friendly, reliable and durable mercury vapor analyzer can make. On display at the show: Jerome® J505 – Hand-held Atomic Fluroescence Mercury Vapor Analyzer The J505 portable fluorescence spectroscopy analyzer is the only hand-held mercury ...
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Laboratory study on the impact of pH and salinity on the fluorescence signal of Natural Organic Matter (NOM) relevant to groundwaters from a Canadian Shield sampling site
Fluorescence spectroscopy with the spectral resolution routine PARAFAC is a leading tool to analyze Natural Organic Matter (NOM) in waters. This routine resolves spectra into humic-, fulvic- and protein-like components, which helps interpret the NOM dynamics in environmental systems. This work is one of the first systematic studies dealing with the impact of chemical perturbations on the ...
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Gulf Coast Conference – Booth TBD
Join Doug at the Gulf Coast Conference, booth TBD, for a demonstration of our Computrac® Vapor Pro® XL and discover how Computrac® moisture analyzers can help enhance your lubrication and quality control processes. Also on display will be our latest Jerome® mercury vapor analyzer, the Jerome® J505. On display at the show: Computrac® Vapor Pro® XL – ...
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Gulf Coast Conference – Booth 210
Join Doug at the Gulf Coast Conference, booth 210 for a demonstration of our Computrac® Vapor Pro® XL and discover how Computrac® moisture analyzers can help enhance your lubrication and quality control processes. Also on display will be our latest Jerome® mercury vapor analyzer, the Jerome® J505. On display at the show: Computrac® Vapor Pro® XL – Chemical ...
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