scholarly journals Catalysis of electro-oxidation of antibiotics by nitroxyl radicals and the electrochemical sensing of vancomycin

RSC Advances ◽  
2021 ◽  
Vol 11 (35) ◽  
pp. 21622-21628
Author(s):  
Tetsuya Ono ◽  
Kyoko Sugiyama ◽  
Sachiko Komatsu ◽  
Masayuki Kumano ◽  
Kentaro Yoshida ◽  
...  
Keyword(s):  
Drug Monitoring ◽  
Analytical Method ◽  
Nitroxyl Radicals ◽  
Electrochemical Sensing ◽  
Electro Oxidation

An analytical method using nitroxyl radicals was able to quantify vancomycin (VCM) in the concentration range of 10–100 μM, which is an important concentration range for drug monitoring in blood.

Tin disulfide–graphene oxide-β-cyclodextrin mediated electro-oxidation of melatonin hormone: an efficient platform for electrochemical sensing

2020 ◽  
Vol 8 (33) ◽  
pp. 7539-7547
Author(s):  
Xinrui Liu ◽  
Rajalakshmi Sakthivel ◽  
Yu-Cheng Chen ◽  
Ning Chang ◽  
Udesh Dhawan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Sensor ◽  
Electrochemical Detection ◽  
2D Materials ◽  
Electrochemical Sensing ◽  
Screen Printed Electrode ◽  
Tin Disulfide ◽  
Ternary Nanocomposite ◽  
Electro Oxidation ◽  
Screen Printed

We have developed an electrochemical sensor based on integrated 2D materials including SnS2, graphene oxide, and β-cyclodextrin forming a ternary nanocomposite decorated on a screen-printed electrode for the electrochemical detection of melatonin.

Validation and long-term evaluation of a modified on-line chiral analytical method for therapeutic drug monitoring of (R,S)-methadone in clinical samples

2009 ◽  
Vol 877 (23) ◽  
pp. 2301-2307 ◽  
Author(s):  
Nicolas Ansermot ◽  
Serge Rudaz ◽  
Marlyse Brawand-Amey ◽  
Sandrine Fleury-Souverain ◽  
Jean-Luc Veuthey ◽  
...  
Keyword(s):  
Therapeutic Drug Monitoring ◽  
Drug Monitoring ◽  
Analytical Method ◽  
Clinical Samples ◽  
Therapeutic Drug ◽  
Term Evaluation ◽  
On Line

scholarly journals Surfactant Modified Graphite Paste Electrode as an Electrochemical Sensor for the Enhanced Voltammetric Detection of Estriol with Dopamine and Uric acid

2020 ◽  
Vol 10 (2) ◽  
pp. 247-253
Author(s):  
Madikeri Manjunath Charithra ◽  
Jamballi Gangadharappa Gowda Manjunatha ◽  
Chenthattil Raril
Keyword(s):  
Uric Acid ◽  
Electrochemical Sensor ◽  
Phosphate Buffer Solution ◽  
Morphological Characteristics ◽  
Electrochemical Sensing ◽  
Voltammetric Detection ◽  
Graphite Paste Electrode ◽  
Electro Oxidation ◽  
The Impact ◽  
Paste Electrode

Purpose: Estriol (ERL) is a type of hormone among the groups of estrogen hormone that was detected through the voltammetric technique by constructing an electrochemical sensor based on the octoxynol-9 modified graphite paste electrode (OXL-9MGPE). Methods: Using the strategy of cyclic voltammetry (CV) and differential pulse voltammetry (DPV) with a bare graphite paste electrode (BGPE) immobilized with OXL-9, ERL electro-oxidation has been assessed in 0.2 M phosphate buffer solution (PBS) of pH 6.0. The fabricated electrode has substantial electrochemical sensing efficiency, and the ERL oxidation at the OXL-9MGPE was the irreversible process. The surface morphological characteristics of BGPE and OXL-9MGPE were differentiated with the help of field emission scanning electron microscopy (FE-SEM). Results: The impact of various factors such as scan rate, pH, reproducibility, repeatability, and stability on the electro-oxidation of ERL was evaluated. Techniques of CV and DPV were utilized to determine ERL, dopamine (DAN), and uric acid (URA) simultaneously with the projected sensor. The peak current was varied with ERL concentration in the range from 4×10-5 to 1.2×10-4 M at OXL-9MGPE. From this, the detection limit 1.4×10-6 M and limit of quantification (LOQ) 4.7×10-6 M have been attained. Conclusion: As a result, OXL-9MGPE was successfully achieved as an electrochemical detector for the electro analysis of ERL via the CV technique.

Densitometric Identification of Primitive Erythroblasts After Reaction With Diaminobenzidine

1973 ◽  
Vol 31 ◽  
pp. 328-329
Author(s):  
John A. Trotter
Keyword(s):  
Red Blood Cells ◽  
Analytical Method ◽  
Blood Cells ◽  
Guinea Pigs ◽  
Specific Protein ◽  
Visual Examination ◽  
Hemoglobin Synthesis ◽  
Peroxidatic Activity ◽  
Small Density

Hemoglobin is the specific protein of red blood cells. Those cells in which hemoglobin synthesis is initiated are the earliest cells that can presently be considered to be committed to erythropoiesis. In order to identify such early cells electron microscopically, we have made use of the peroxidatic activity of hemoglobin by reacting the marrow of erythropoietically stimulated guinea pigs with diaminobenzidine (DAB). The reaction product appeared as a diffuse and amorphous electron opacity throughout the cytoplasm of reactive cells. The detection of small density increases of such a diffuse nature required an analytical method more sensitive and reliable than the visual examination of micrographs. A procedure was therefore devised for the evaluation of micrographs (negatives) with a densitometer (Weston Photographic Analyzer).

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