Results 51 to 60 of about 4,191,571 (369)

Hot-wire detector for chemically active materials used in gas chromatography [PDF]

, 1966
Hot-filament detector analyzes chemically active materials used in gas chromatography. The detector reacts chemically with the effluent vapors in the gas chromatographic apparatus to change the electrical resistance of the filament as a function of the ...

core   +1 more source

ASSESSMENT OF LINDANE (GAMMA HCH) RESIDUES IN WATER AND MILK SAMPLES IN PALAKKAD DISTRICT [PDF]

Journal of Veterinary and Animal Sciences, 2012
Organochlorine pesticides are ubiquitous and persistent organic pollutants used widely throughout the world. The organochlorines are more potent due to their prolonged persistence, lipophilic nature and tendency to accumulate in anima! and plant tissues.
V.R. Dhanya, P.T.A. Usha, A.R Nisha, C.B. Vineetha, V.J. Ajaykumar   +4 more
doaj  

Facile Synthesis of CuxS Electrocatalysts for CO2 Conversion into Formate and Study of Relations Between Cu and S with the Selectivity

Advanced Functional Materials, EarlyView.
Copper sulfide based electrocatalysts for CO2 conversion are selective for production of formate as major product. Transformations under electrochemical conditions result in significant sulfur loss, and this study examines the nature of how persistent, residual sulfur (observed as surface SO42– species and S dissolved in the electrolyte) can sustain ...
Sasho Stojkovikj, Gumaa A. El‐Nagar, Siddharth Gupta, Metodija Najdoski, Violeta Koleva, Theocharis Tzanoudakis, Frederik Firschke, Peter Bogdanoff, Matthew T. Mayer   +8 more
wiley   +1 more source

Titan organic aerosols: molecular composition and structure of laboratory analogues inferred from systematic pyrolysis gas chromatography mass spectrometry analysis [PDF]

Icarus, Elsevier, 2016, 277, pp.442-454, 2017
Numerous studies have been carried out to characterize the chemical composition of laboratory analogues of Titan aerosols (tholins), but their molecular composition as well as their structure are still poorly known. If pyrolysis gas chromatography mass spectrometry (pyr-GCMS) has been used for years to give clues about this composition, the highly ...
arxiv   +1 more source

Organic compounds in hydraulic fracturing fluids and wastewaters: A review [PDF]

, 2017
High volume hydraulic fracturing (HVHF) of shale to stimulate the release of natural gas produces a large quantity of wastewater in the form of flowback fluids and produced water.
Gonsior, Michael, Luek, Jenna L.
core   +3 more sources

Hydrogel‐Based Photothermal‐Catalytic Membrane for Efficient Cogeneration of Freshwater and Hydrogen in Membrane Distillation System

Advanced Functional Materials, EarlyView.
This work presents an overview of the PTC‐VMD system for water‐hydrogen co‐generation. a) Illustration of the hydrogel‐based PTC membrane and the co‐generation of water and hydrogen. b) Structure of the PTC‐VMD system and the functions of each component layer.
Jiawei Sun, Muhammad Usman Farid, Wenlong Xi, Gang Lu, Min Wei Boey, Sai Kishore Ravi, Patrick H.‐L. Sit, Alicia Kyoungjin An   +7 more
wiley   +1 more source

Application of inverse gas chromatography for polymer characterization [PDF]

Hemijska Industrija, 2007
The possibility of polymer characterization by inverse gas chromatography (IGC) was illustrated with the study of sorption properties of macroporous crosslinked poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate), PGME, synthesized by ...
Nastasović Aleksandra B., Onjia Antonije E., Milonjić Slobodan K., Jovanović Slobodan M.   +3 more
doaj   +1 more source

In‐Situ Growth of 2D MOFs as a Molecular Sieving Layer on SnS2 Nanoflakes for Realizing Ultraselective H2S Detection

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The ultraselective H2S detection of the ZIF‐L/SnS2 heterostructure is demonstrated. The introduction of 2‐dimensional (2D) breathable ZIF‐L results in a substantial increase in H2S selectivity attributable to the molecular sieving effect, which impedes the permeation of gases with large kinetic diameters and high polarity.
Soo Min Lee, Yeong Jae Kim, Seon Ju Park, Woo Seok Cheon, Jaehyun Kim, Gi Baek Nam, Youngeun Kim, Ho Won Jang   +7 more
wiley   +1 more source

The use of high performance anion exchange chromatography for the detection of counterfeit pharmaceutical products using the excipient content as a marker [PDF]

, 2015
The aim of the investigation described here was to examine the differences between genuine and counterfeit pharmaceutical products through the development of an analytical method capable of rigorously identifying the sugar-based excipients.
Beasley, Emma, Coleman, Tyler, Suman, Mandeesh   +2 more
core   +2 more sources

Safety operation of chromatography column system with discharging hydrogen radiolytically generated

EPJ Nuclear Sciences & Technologies, 2015
In the extraction chromatography system, accumulation of hydrogen gas in the chromatography column is suspected to lead to fire or explosion. In order to prevent the hazardous accidents, it is necessary to evaluate behaviors of gas radiolytically ...
Watanabe Sou, Sano Yuichi, Nomura Kazunori, Koma Yoshikazu, Okamoto Yoshihiro   +4 more
doaj   +1 more source