organic solvent Articles
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Evaporation and recovery of organic solvents
Customer: H.E.J. Research Institute of Chemistry, Pakistan H.E.J. Research Institute of Chemistry is the largest research institute of Pakistan with state of the art facilities. The areas of research covered in the programs of the institute broadly relate to isolation, structural, synthetic and pharmacological studies on novel natural products as well as various aspects of protein chemistry. ...
By BUCHI
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Evaporation of organic solvents after synthesis
Customer: Global Research Center for Environment and Energy based on Nanomaterials Science, GREEN, Japan The company was established in 1990 as a domestic paper distributor. Hi-Tech Paper Com¬pany Limited was set up to produce uncoated paper and now produces 41,000 tons of paper per year. The company was the pilot mill and the foundation of the successful pulp and paper industry that has ...
By BUCHI
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Vortex-assisted liquid–liquid microextraction combined with spectrophotometry for the determination of trace nitrite in water samples
A vortex-assisted liquid–liquid microextraction (VALLME) method using isooctanol as extractant followed by spectrophotometry was developed for the extraction and determination of trace nitrite in water samples. The method is based on selective ion-pairing complex (I3− MG+) formation of triiodideanion I3− with cationic dye malachite green (MG) at pH 3.0, and its subsequent extraction in an ...
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Indirectly suspended droplet microextraction of water‐miscible organic solvents by salting‐out effect for the determination of polycyclic aromatic hydrocarbons
A simple and low cost method “indirectly suspended droplet microextraction of water‐miscible organic solvents (ISDME)” by salting‐out effect prior to high performance liquid chromatography and UV detection (HPLC‐UV) was used for the determination of polycyclic aromatic hydrocarbons (PAHs) in different samples. ISDME is a combination of salting‐out extraction of water‐miscible organic solvent ...
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Volatile organic solvents sensing using silicon nanowires array fabricated by spontaneous electrochemical reaction
In order to prevent overexposure to volatile organic solvents (VOCs), a simple sensing device with high sensitivity is needed in the common workplace. Meanwhile, silicon nanowires carrying the high surface–bulk ratio as a unique characteristic could be used for VOCs sensing. This study utilised spontaneous electrochemical reaction, which involves etching of silicon wafer in a silver nitrate and ...
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Neelanjan Carbon Offers-Granular Active Carbon
NC - Granular Active Carbon Characteristic: Mainly applicable to the refrigerator-swimming pool deodorization, air purification, refinement and purification of industrial raw gases, also to the recovery of alcoholic, hydrocarbon and aromatic organic solvents. The product features high absorptive capacity, high strength and easy ...
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ENVI-Carb Plus for the Extraction of Propylene Glycol and Ethylene Glycol from Water
ENVI-Carb Plus reversible cartridges were able to extract both propylene and ethylene glycol from water, and the method was demonstrated to be both quantitative and reproducible. Elution was achieved with a combination of organic solvents, offering further options for GC analysis such as sample concentration or solvent exchange. Direct injection of the elution solvent offered an improvement in ...
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Hielscher Ultrasonics: Dispersing Individual Single-Walled Carbon Nanotubes by Ultrasonication
Hielscher Ultrasonics offers powerful ultrasonic devices for detangling, dispersing, and the deagglomeration of nano-sized particles, such as Carbon Nanotubes. Single-Walled Carbon Nanotubes (SWCNTs) are highly cohesive, so one of the major obstacles in processing SWCNTs is the inherent insolubility of the tubes in organic solvents or water. To use the full potential of SWCNTs, a simple, reliable ...
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H.E.J. Research Institute of Chemistry, Pakistan - Case Study
“The Industrial Rotavapor R-250 is a complete package for all industrial labs, working on the isolation of natural products.” Company / Institution H.E.J. Research Institute of Chemistry, Pakistan Product lines Industrial Evaporation Industries Environmental Food & Beverage Customer: H.E.J. Research Institute of Chemistry, Pakistan H.E.J. Research Institute of Chemistry ...
By BUCHI
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Effects of pH and coexisting chemicals on photolysis of perfluorooctane sulfonate using an excited xenon dimer lamp
Vacuum ultraviolet (VUV) photolysis at the wavelength of 172 nm in a sulfate solution was introduced as a more efficient process for perfluorooctane sulfonate (PFOS) degradation than ultraviolet (UV) photolysis at 254 nm. The effects of pH and coexisting chemicals on VUV photolysis under the coexistence of 100 mM sulfate were investigated. VUV irradiation successfully degraded PFOS, and the ...
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Photodegradation of the benzothiostrobin in solution and on soil and glass surface
The photolytic characteristics of benzothiostrobin were investigated in solution and on soil and glass surface. The main influence factors such as initial concentration, organic solvent and the aqueous environmental substances, including NO2–, NO3–, Fe2+, Fe3+, H2O2 and turbidity were investigated. Three photodegradation products of benzothiostrobin were identified by ultra-performance liquid ...
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Kollidon® 30 as a suitable encapsulant for nano spray drying processes in water and organic solvent
In order to improve the dissolution property of poorly water-soluble drugs, solid dispersion methods have been used and described in the recent years such as fusion, solvent evaporation or spray drying. Kollidon® 30 is a polyvinylpyrrolidone polymer soluble in water and many organic solvents. It is used as excipient in the pharmaceutical industry for the microencapsulation of drugs. It is ...
By BUCHI
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Neelanjan Carbon Offers - Solvent Recovery Activated Carbon
NC - Solvent Recovery Activated Carbon Characteristics: This product features high specific surface area, developed pores, superior wear existence and pressure resistance, strong absorptive capacity, stable properties and high recovery rate. Purposes: Applicable to the recovery of benzenes, alcohols, ether, carbon tetra-chloride, chloroform and other organic solvents, gasoline and light ...
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Graphite Ring reinforced with ss304
Flexible graphite ring produced by Adtech is compressed with expanded graphite tape. It is also called Expanded Graphite Ring, Die-formed Graphite Ring, Flexible Graphite Moulded Ring. It keeps all the characteristics of flexible graphite. Flexible Graphite Ring reinforced with ss304, steel mesh, nickel or platinum to enhance the compression resistance. It is used as sealing gasket, packing in ...
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Kimre Inc. LIQUI-NOMIX oil-water separators
Liquid - liquid mixtures of contaminant oils (or organic solvents) in water (or aqueous solvents) can be separated economically and efficiently with gravity settlers or decanters. To achieve high efficiency separations, the settling unit must include a coalescing stage for removal of small droplets of oil. Kimre Inc.'s LIQUI-NOMIX coalescers provide high efficiency polishing of liquid streams and ...
By Kimre Inc.
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Concentration and solvent recovery of environmental samples in dichloromethane
Environmental samples are usually extracted with an organic solvent which is then concentrated prior to final analysis. In this short note, initial conditions and evaporation settings for the parallel concentration of samples dissolved in dichloromethane (DCM) having different starting volumes are presented. These settings have been optimized for high analyte and high solvent recoveries. ...
By BUCHI
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The synthesis and use of steric–stabilised titania nanoparticles in Pickering–emulsion preparation
We employed the well–accepted sol–gel process to synthesise spherical titania nanoparticles of narrow size range 290 nm to 1,600 nm by mixing reactants such as titanium tetra isopropoxide (precursor), organic solvents (ethanol and isopropanol) and for the steric stabilisation, commercial surfactants (Brij 30, Brij 72, Brij 76 and Marlinat 242/28). Experimentally, the size distribution of ...
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VOC`s oxidation
Real Decreto 117/2003, dated 31st January related to Volatile Organic Compounds emission limits, due to organic solvents, as well as Law 16/2002, dated 1st July, related to prevention and integrated control of pollution (IPPC), came into force, which will impel many industries to set devices for the treatment and elimination of gases effluents with different organic compounds content. Here, we ...
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The Extraction of Glycols From Water Using ENVI-Carb™ Plus Solid Phase Extraction Cartridges
The analysis of glycols such as propylene and ethylene glycol from water samples is traditionally done by direct aqueous injection into a gas chromatograph. Aqueous injections are problematic in GC analysis due to issues such as the large expansion volume of water in the inlet, increased carryover, and elevated detection limits. In this work, we have evaluated a unique carbon adsorbent, ENVI-Carb ...
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New Discoveries of Sanitary Fittings
Design The latest sanitary fittings feature cutting-edge technological concepts meant to curb bacterium and polytetrafluoroethylene liners. This is made possible by the fact that screw threads of fittings do not directly touch the production material. Keep in mind that the fittings can withstand high temperatures as well as corrosive liquids. That explains why they are ideal for organic solvents, ...
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