Raman probe for the simultaneous measurement of anion concentration in mixtures of salt solutions

Kauffmann, Thomas; Mabrouk, K. Ben; Fontana, M.D.

doi:10.1109/icsens.2013.6688293

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…The presence of nitrates (AgNO 3 and NaNO 3 ) can be ruled out as there are no strong peaks corresponding to an A 1g mode of the NO 3 group at ~1049 cm À 1 . Moreover, there are no peaks which would correspond to the OH stretching mode associated with sodium nitrate at ~3500 cm À 1 [14,15]. A Raman map of Ag 2 O marker peaks around 1500 cm À 1 showed the presence of silver oxide (Figure 4c).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of submicron‐sized silver azide by multi‐nozzle spray flash synthesis**

Galland

COMET

Ott

et al. 2023

Propellants Explo Pyrotec

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Submicron-sized powders of silver azide (AgN 3 ) were prepared by Curtius' reaction between silver nitrate (AgNO 3 ) and sodium azide (NaN 3 ) in aqueous solutions by a new process: the Spray Flash Synthesis (SFS). The SFS process consists in spraying the two precursor solutions in a heated atomization chamber (130-190 °C), maintained under low vacuum (15-30 kPa). The reaction occurs in the droplets which have collided; the final size of particles is limited by the fast evaporation of water and the small amount of matter available in each droplet which can be considered as an individual micro-reactor.The mean particle sizes of silver azide synthesized by the SFS process range from 220 nm to 390 nm, which means that these particles are three times smaller than those obtained by the conventional precipitation method. Submicron-sized AgN 3 powders can be initiated by a photographic flash.

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Section: Resultsmentioning

confidence: 99%

Synthesis of submicron‐sized silver azide by multi‐nozzle spray flash synthesis**

Galland

COMET

Ott

et al. 2023

Propellants Explo Pyrotec

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“…Inclusion of advanced normalization methods and investigation of SER spectra for hidden trends through principal component analysis and machine learning approaches shows to be promising to extract formerly hidden trends from the obtained data. 30,31 The selection of currently available techniques for in situ nitrate detection clearly shows the need for a modied measurement approach. Hence, we focused on nonfunctionalized substrates using principal component analysis, standard normal variate spectral normalization and internal silicon standards to reduce background noise and remove signal bias due to spectral features inherent to the substrates.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

In situ SERS detection of dissolved nitrate on hydrated gold substrates

Küster

Bothun

2021

Nanoscale Adv.

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Raman Spectroscopic Investigation of Sulfates Using Mosaic Grating Spatial Heterodyne Raman Spectrometer

Qiu

2019

IEEE Photonics J.

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We introduce a field-widened spatial heterodyne Raman spectrometer with a mosaic grating structure to investigate the broadband Raman spectra of sulfates. The broadband static spatial heterodyne Raman spectrometer configuration employs two mosaic gratings instead of the diffraction gratings to divide the broadband Raman spectrum into two bands. It is able to record high-resolution, broadband Raman spectrum range, covering 5740 cm −1 with 3.061 cm −1 spectral resolution using a regular CCD in a single-shot measurement. Raman spectra of mineral sulfates (celestine, gypsum) are investigated. This is the first time to conduct this Raman spectroscopic experiments to investigate the sulfates using the spatial heterodyne Raman spectroscopy. The sodium, potassium and ammonium sulfates at solid state and in aqueous solutions had been detected and analyzed. The effects of metal ions (K + , Na + , NH 4 + , Ca 2+ , Sr 2+) on vibration of sulfate anion SO 4 2− were discussed. The main v 1 mode can be probed by the spatial heterodyne Raman spectroscopy to determine the concentration of sulfate and unambiguous identification of different sulfate minerals, solid sulfates.

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Raman probe for the simultaneous measurement of anion concentration in mixtures of salt solutions

Cited by 3 publications

References 14 publications

Synthesis of submicron‐sized silver azide by multi‐nozzle spray flash synthesis**

Synthesis of submicron‐sized silver azide by multi‐nozzle spray flash synthesis**

In situ SERS detection of dissolved nitrate on hydrated gold substrates

Raman Spectroscopic Investigation of Sulfates Using Mosaic Grating Spatial Heterodyne Raman Spectrometer

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