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Atomic absorption spectroscopy [PDF]

open access: bronzeJournal of the American Oil Chemists' Society, 1968
AbstractAtomic absorption spectrophotometry has been used for the rapid determination of various metallic and nonmetallic elements in crude and refined vegetable oils and in animal fats, many present in levels of parts per million. Various types of crude and refined vegetable oils were analyzed for Ca, Cu, Fe, Mg, Mn, P and Zn.
Robert T. O'Connor, Biagio Piccolo
  +7 more sources

Absorption spectroscopy at the ultimate quantum limit from single-photon states [PDF]

open access: yesNew Journal of Physics, 2017
Absorption spectroscopy is routinely used to characterise chemical and biological samples. For the state-of-the-art in laser absorption spectroscopy, precision is theoretically limited by shot-noise due to the fundamental Poisson-distribution of photon ...
R Whittaker   +6 more
doaj   +2 more sources

Reduction of optical noise in near-infrared range laser hygrometry [PDF]

open access: yesMetrology and Measurement Systems, 2023
A contactless laser hygrometer based on light absorption by H2O molecules at 1392.5 nm is described. However, measurement results can be affected by optical noise when applied to an atmospheric tunnel or glass cuvette.
Tadeusz Stacewicz   +2 more
doaj   +1 more source

Absorption Spectroscopy in Dental Tissue Analysis

open access: yesIEEE Access, 2023
Oral health problems are closely associated with the analysis of dental tissue changes and the stomatologic treatment that follows. This paper explores the use of diffuse reflectance spectroscopy in the detection of dental tissue disorders.
Ales Prochazka   +2 more
doaj   +1 more source

Entanglement-Assisted Absorption Spectroscopy [PDF]

open access: yesPhysical Review Letters, 2020
We propose a practical transmitter-receiver system that exploits entanglement to achieve a provable quantum advantage over all spectrometers based on classical sources. The quantum advantage is robust against noise and loss.
Shi, Haowei   +3 more
openaire   +6 more sources

Ligand Assisted Control of Photoluminescence in Organometal Perovskite Nanocrystals

open access: yesEurasian Chemico-Technological Journal, 2021
Organometal perovskite nanocrystals have shown remarkable properties not only in photovoltaics, but also in light-emitting devices. In this work colloidal nanocrystals of organometal perovskite CH3NH3PbBr3 (MAPBr) with effective visible photoluminescence
K.S. Sekerbayev   +3 more
doaj   +1 more source

Efficient Semiclassical Dynamics for Vibronic Spectroscopy beyond Harmonic, Condon, and Zero-Temperature Approximations

open access: yesCHIMIA, 2021
Understanding light-induced processes in biological and human-made molecular systems is one of the main goals of physical chemistry. It has been known for years that the photoinduced dynamics of atomic nuclei can be studied by looking at the vibrational ...
Tomislav Begušić, Jirí Vaníček
doaj   +1 more source

Investigations on Pressure Broadening Coefficients of NO Lines in the 1←0 Band for N2, CO2, Ar, H2, O2 and He

open access: yesApplied Sciences, 2023
A tunable diode laser absorption spectroscopy (TDLAS)-based spectrometer employing a mid-infrared (Mid-IR) interband cascade laser (ICL) was developed and used to determine pressure broadening coefficients of two NO absorption transitions at 1914.98 cm−1
Sumit Agarwal   +5 more
doaj   +1 more source

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