Characterization of surfactant complex mixtures using Raman spectroscopy and signal extraction methods: Application to laundry detergent deformulation

The Hot Water Percolation (HWP) technique for preparing soil extracts has several advantages: it is easily carried out, fast, and several parameters can be measured from the same solution. The object of this study was to examine the possible use of HWP extracts for the characterization of soil organic matter. The HPLC-SEC chromatograms, UV-VIS and fluorescence properties of the HWP extracts were studied and the results were compared with those of the International Humic Substances Society (IHSS) Soil Humic Acid (HA), IHSS Soil Fulvic Acid (FA) and IHSS Suwannee Natural Organic Matter (NOM) standards as well as their HA counterparts isolated by traditional extraction methods from the original soil samples. The DOM of the HWP solution is probably a mixture of organic materials, which have some characteristics similar to the Soil FA fractions and NOM. The HWP extracted organic material can be studied and characterized using simple techniques, like UV-VIS and fluorescence spectroscopy.

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Characterization of sludges. Determination of trace elements and phosphorous. Aqua regia extraction methods

10.3403/02081201 ◽

2000 ◽

Keyword(s):

Trace Elements ◽

Extraction Methods ◽

Aqua Regia

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Morpho-molecular ex vivo detection and grading of non-muscle-invasive bladder cancer using forward imaging probe based multimodal optical coherence tomography and Raman spectroscopy

The Analyst ◽

10.1039/c9an01911a ◽

2020 ◽

Vol 145 (4) ◽

pp. 1445-1456 ◽

Cited By ~ 1

Author(s):

Fabian Placzek ◽

Eliana Cordero Bautista ◽

Simon Kretschmer ◽

Lara M. Wurster ◽

Florian Knorr ◽

...

Keyword(s):

Raman Spectroscopy ◽

Optical Coherence Tomography ◽

Imaging System ◽

Ex Vivo ◽

Large Field ◽

Optical Coherence ◽

Fiber Optic Probe ◽

Optic Probe ◽

Muscle Invasive

Characterization of bladder biopsies, using a combined fiber optic probe-based optical coherence tomography and Raman spectroscopy imaging system that allows a large field-of-view imaging and detection and grading of cancerous bladder lesions.

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Multi-modal characterization of collagen fibril orientation in human cortical bone by a combination of quantitative polarized Raman spectroscopy, nanoscale X-ray computed tomography and 360° electron tomography

Microscopy and Microanalysis ◽

10.1017/s1431927621000970 ◽

2021 ◽

Vol 27 (S1) ◽

pp. 96-101

Author(s):

Tatiana Kormilina ◽

Silvan Englisch ◽

Tatiana Kochetkova ◽

Dominik Drobek ◽

Janis Wirth ◽

...

Keyword(s):

Computed Tomography ◽

Raman Spectroscopy ◽

Cortical Bone ◽

Collagen Fibril ◽

Electron Tomography ◽

X Ray ◽

X Ray Computed ◽

Polarized Raman Spectroscopy ◽

Polarized Raman

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Raman Spectroscopy Investigation of Graphene Oxide Reduction by Laser Scribing

C – Journal of Carbon Research ◽

10.3390/c7020048 ◽

2021 ◽

Vol 7 (2) ◽

pp. 48

Author(s):

Vittorio Scardaci ◽

Giuseppe Compagnini

Keyword(s):

Raman Spectroscopy ◽

Graphene Oxide ◽

Reduce Graphene Oxide ◽

Oxide Reduction ◽

Material Parameters ◽

Laser Scribing ◽

Wide Range ◽

Scan Speed ◽

Laser Reduction

Laser scribing has been proposed as a fast and easy tool to reduce graphene oxide (GO) for a wide range of applications. Here, we investigate laser reduction of GO under a range of processing and material parameters, such as laser scan speed, number of laser passes, and material coverage. We use Raman spectroscopy for the characterization of the obtained materials. We demonstrate that laser scan speed is the most influential parameter, as a slower scan speed yields poor GO reduction. The number of laser passes is influential where the material coverage is higher, producing a significant improvement of GO reduction on a second pass. Material coverage is the least influential parameter, as it affects GO reduction only under restricted conditions.

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