Attenuated Total Reflectance FTIR Detection and Quantification of Low Concentrations of Aqueous Polyatomic Anions

2004 ◽  
Vol 76 (3) ◽  
pp. 781-787 ◽  
Author(s):  
Gretchen N. Hebert ◽  
Matthew A. Odom ◽  
Stephanie C. Bowman ◽  
Steven H. Strauss
Keyword(s):  
Attenuated Total Reflectance ◽  
Total Reflectance ◽  
Low Concentrations ◽  
Reflectance Ftir ◽  
Detection And Quantification

Discrimination of clinically relevant Candida species by Fourier-transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR)

RSC Advances ◽  
2016 ◽  
Vol 6 (94) ◽  
pp. 92065-92072 ◽  
Author(s):  
Sónia Silva ◽  
Flávia Tobaldini-Valerio ◽  
Sofia Costa-de-Oliveira ◽  
Mariana Henriques ◽  
Joana Azeredo ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Species Identification ◽  
Candida Species ◽  
Fourier Transform Infrared ◽  
Attenuated Total Reflectance ◽  
Total Reflectance ◽  
Reflectance Ftir

Accurate Candida species identification remains a challenge due to their phenotypic and genotypic similarity.

scholarly journals LDPE Oxidation by CO2 Laser Radiation (10.6 µm)

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
A. Martínez-Romo ◽  
R. González-Mota ◽  
J. J. Soto-Bernal ◽  
I. Rosales-Candelas
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Laser Radiation ◽  
Spectroscopic Properties ◽  
Attenuated Total Reflectance ◽  
Ir Absorption ◽  
Simultaneous Formation ◽  
Total Reflectance ◽  
Reflectance Ftir ◽  
Co2 Laser Radiation

Thermooxidation of LDPE films by CO2 laser radiation, 10.6 μm, was characterized by Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR). The formation of carbonyl and hydroxyl functional groups onto LDPE films was dependent on the fluency of CO2 laser. IR absorption of vinyl groups and C-O bond present in alcohols showed a decrease and an increase, respectively, indicating that CO2 laser radiation causes simultaneous formation and accumulation of hydroperoxides in LDPE films; furthermore, crystallinity of LDPE films irradiated with CO2 tends to increase. So, CO2 laser radiation is able to oxidize the LDPE films, obtaining a PE with similar spectroscopic properties to that of PE-BIO by a physical process.

Tea Tree Oil/Ethyl Cellulose Microcapsule Loaded Antimicrobial Textiles

2020 ◽  
Vol 7 (2) ◽  
pp. 1-6
Author(s):  
Burcu Sancar Beşen
Keyword(s):  
Ethyl Cellulose ◽  
Antibacterial Activities ◽  
Antimicrobial Activities ◽  
Cotton Fabrics ◽  
Attenuated Total Reflectance ◽  
Tea Tree Oil ◽  
Total Reflectance ◽  
Tea Tree ◽  
Reflectance Ftir ◽  
Sem Analyses

The aim of this experimental study was to obtain disposable antimicrobial cotton fabrics through applications of tea tree oil/ethyl cellulose (TTO/EC) microcapsules. For this purpose, the TTO/EC microcapsules were prepared and characterized via scanning electron microscopy (SEM) and Fourier transform infrared-attenuated total reflectance (FTIR-ATR) analyses. The characterized microcapsules were then applied to 100% cotton fabric samples via the padding method and were investigated by FTIR-ATR and SEM analyses. In addition, the antibacterial activities of TTO, TTO/EC microcapsules, and fabric samples were also assessed against Escherichia coli and Staphylococcus aureus bacteria. The results showed that the microcapsules were successfully prepared and applied to the fabric samples. In addition, the targeted antimicrobial activities on the textile surfaces were achieved within acceptable levels.

scholarly journals ANTI-CORROSION PERFORMANCE OF 1,3-BENZOTHIAZOLE ON 410 MARTENSITIC STAINLESS STEEL IN H2SO4

2017 ◽  
Vol 24 (07) ◽  
pp. 1750121 ◽  
Author(s):  
ROLAND TOLULOPE LOTO
Keyword(s):  
Stainless Steel ◽  
Corrosion Inhibition ◽  
Spectroscopic Analysis ◽  
Martensitic Stainless Steel ◽  
Attenuated Total Reflectance ◽  
Corrosion Performance ◽  
Total Reflectance ◽  
Langmuir Adsorption ◽  
Low Concentrations ◽  
Inhibition Reaction

The corrosion inhibition effect of synthesized 1,3-benzothiazole at very low concentrations on 410 martensitic stainless steel in 3[Formula: see text]MH2SO4 solution was studied through potentiodynamic polarization and weight loss measurements. The observation showed that the organic compound performed effectively with average inhibition efficiencies of 94% and 98% at the concentrations studied from both electrochemical methods due to the inhibition action of protonated inhibitor molecules in the acid solution. The amine and aromatics functional groups of the molecules active in the corrosion inhibition reaction were exposed from Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) spectroscopic analysis. Thermodynamic calculations showed cationic adsorption to be chemisorption adsorption, obeying the Langmuir adsorption isotherm. Images from optical microscopy showed an improved morphology in comparison to images from corroded stainless steel. Severe surface deterioration and macro-pits were observed in the uninhibited samples.

In Situ Mechanistic Investigation at the Liquid/Solid Interface by Attenuated Total Reflectance FTIR: Ethanol Photo-Oxidation over Pristine and Platinized TiO2 (P25)

ACS Catalysis ◽  
2011 ◽  
Vol 1 (8) ◽  
pp. 864-871 ◽  
Author(s):  
Dangguo Gong ◽  
Vishnu Priya Subramaniam ◽  
James G. Highfield ◽  
Yuxin Tang ◽  
Yuekun Lai ◽  
...  
Keyword(s):  
Attenuated Total Reflectance ◽  
Total Reflectance ◽  
Photo Oxidation ◽  
Solid Interface ◽  
Mechanistic Investigation ◽  
Reflectance Ftir
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