In-situ fabrication of polypyrrole composite with MoO3: An effective interfacial charge transfers and electrode materials for degradation and determination of acetaminophen

Chemosphere ◽  
2021 ◽  
pp. 132977
Author(s):  
Subburaj Srinithi ◽  
Vellaichamy Balakumar ◽  
Shen-Ming Chen
Keyword(s):  
Electrode Materials ◽  
In Situ Fabrication ◽  
Polypyrrole Composite ◽  
Interfacial Charge

scholarly journals Jet Fuel Deposition and Oxidation: Dilution, Materials, Oxygen, and Temperature Effects

1995 ◽  
Author(s):  
Steven Zabarnick ◽  
Paula Zelesnik ◽  
Rebecca R. Grinstead
Keyword(s):  
Thermal Stability ◽  
Electrode Materials ◽  
Batch Reactor ◽  
Jet Fuel ◽  
Pressure Measurements ◽  
Good Technique ◽  
Antioxidant Concentration ◽  
Fuel Deposition

The quartz crystal microbalance (QCM) and pressure measurements are used for determination of jet fuel thermal stability in a batch reactor. The QCM is able to monitor extremely small amounts of deposition in situ, while the pressure measurements provide qualitative data on the oxidation process. The dependence of the deposition amount was monitored as a function of the oxygen availability for two fuels. Also, the effect of QCM electrode materials was investigated. Deposition and oxidation were compared for the following electrode materials: gold, aluminum, silver, and platinum. We also studied the effect of dilution on oxidation and deposition. Jet fuel was diluted with increasing amounts of hydrocarbon solvent. It was observed that this dilution procedure can help characterize a fuel’s effective antioxidant concentration. Fuel dilution is also shown to be a good technique for improving thermal stability characteristics of poor fuels. Additionally we have studied the temperature effect on deposition for two fuels over the range 140 to 180 C.

Facile in situ fabrication of oriented titania submicrorods embedded into a superelastic nickel–titanium alloy fiber substrate and their application in solid-phase microextraction

2018 ◽  
Vol 42 (15) ◽  
pp. 12929-12937 ◽  
Author(s):  
Feifei Wang ◽  
Zhuo Wang ◽  
Ziyi Wang ◽  
Rong Zhang ◽  
Junliang Du ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Nickel Titanium ◽  
In Situ Fabrication

A novel NiTi@TiO2SR fiber was fabricated on a NiTi fiber substrate after annealing for the determination of PAHs in water.

In situ construction of hollow carbon spheres with N, Co, and Fe co-doping as electrochemical sensors for simultaneous determination of dihydroxybenzene isomers

Nanoscale ◽  
2019 ◽  
Vol 11 (18) ◽  
pp. 8950-8958 ◽  
Author(s):  
Hui Yang ◽  
Shunxing Li ◽  
Huiwu Yu ◽  
Fengying Zheng ◽  
Luxiu Lin ◽  
...  
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Sensors ◽  
Carbon Spheres ◽  
Co Doping ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Control of the active sites/centers plays an important role in the design of novel electrode materials with unusual properties and achievement of sensors with high performance.

Development of bimetal-organic frameworks-polypyrrole composite as a novel fiber coating for direct immersion solid phase microextraction in-situ supercritical fluid extraction coupled to gas chromatography for simultaneous determination of furfurals in dates

2021 ◽  
Author(s):  
zohreh Falsafi ◽  
Farhad Raofie
Keyword(s):  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Solid Phase ◽  
Fluid Extraction ◽  
Fiber Coating ◽  
Hyphenated Technique ◽  
Polypyrrole Composite ◽  
Direct Immersion

A new, simple, hyphenated technique couples supercritical fluid extraction and direct immersion SPME to GC-FID (SFE–DI-SPME–GC–FID) for the determination of 2-furaldehyde (2-F) and 5-hydroxymethylfurfural (5-HMF) in solid foods. A bimetal-organic...

Jet Fuel Deposition and Oxidation: Dilution, Materials, Oxygen, and Temperature Effects

1996 ◽  
Vol 118 (2) ◽  
pp. 271-277 ◽  
Author(s):  
S. Zabarnick ◽  
P. Zelesnik ◽  
R. R. Grinstead
Keyword(s):  
Thermal Stability ◽  
Electrode Materials ◽  
Batch Reactor ◽  
Jet Fuel ◽  
Pressure Measurements ◽  
Good Technique ◽  
Antioxidant Concentration ◽  
Fuel Deposition

Quartz crystal microbalance (QCM) and pressure measurements are used for determination of jet fuel thermal stability in a batch reactor. The QCM is able to monitor extremely small amounts of deposition in situ, while the pressure measurements provide qualitative data on the oxidation process. The dependence of the deposition amount was monitored as a function of the oxygen availability for two fuels. Also, the effect of QCM electrode materials was investigated. Deposition and oxidation were compared for the following electrode materials: gold, aluminum, silver, and platinum. We also studied the effect of dilution on oxidation and deposition. Jet fuel was diluted with increasing amounts of hydrocarbon solvent. It was observed that this dilution procedure can help characterize a fuel’s effective antioxidant concentration. Fuel dilution is also shown to be a good technique for improving thermal stability characteristics of poor fuels. Additionally we have studied the temperature effect on deposition for two fuels over the range 140 to 180°C.

In situ fabrication of hollow ZnO@NC polyhedra from ZIF-8 for the determination of trace Cd(ii)

The Analyst ◽  
2018 ◽  
Vol 143 (12) ◽  
pp. 2837-2843 ◽  
Author(s):  
Xueping Zhang ◽  
Qingqing Wang ◽  
Jing Li ◽  
Liang Huang ◽  
Dengbin Yu ◽  
...  
Keyword(s):  
Electrochemical Detection ◽  
In Situ Fabrication

H-ZnO@NC polyhedra prepared from ZIF-8 exhibit remarkable analytical performances for the electrochemical detection of Cd(ii).

INDIREKTE PAPIERCHROMATOGRAPHISCHE METHODE ZUR BESTIMMUNG DER HARNOESTROGENE

1961 ◽  
Vol 38 (4) ◽  
pp. 545-562 ◽  
Author(s):  
L. Kecskés ◽  
F. Mutschler ◽  
I. Glós ◽  
E. Thán ◽  
I. Farkas ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Granulosa Cell ◽  
Iron Content ◽  
List Type ◽  
Granulosa Cell Tumour ◽  
Hydrolysis Of ◽  
Phenol Fraction ◽  
Qualitative Determination

ABSTRACT 1. An indirect paperchromatographic method is described for separating urinary oestrogens; this consists of the following steps: acidic hydrolysis, extraction with ether, dissociation of phenol-fractions with partition between the solvents. Previous purification of phenol fraction with the aid of paperchromatography. The elution of oestrogen containing fractions is followed by acetylation. Oestrogen acetate is isolated by re-chromatography. The chromatogram was developed after hydrolysis of the oestrogens 'in situ' on the paper. The quantity of oestrogens was determined indirectly, by means of an iron-reaction, after the elution of the iron content of the oestrogen spot, which was developed by the Jellinek-reaction. 2. The method described above is satisfactory for determining urinary oestrogen, 17β-oestradiol and oestriol, but could include 16-epioestriol and other oestrogenic metabolites. 3. The sensitivity of the method is 1.3–1.6 μg/24 hours. 4. The quantitative and qualitative determination of urinary oestrogens with the above mentioned method was performed in 50 pregnant and 9 non pregnant women, and also in 2 patients with granulosa cell tumour.

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