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Showing 1 to 14 of 14 for “"ultrapure water"”.
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Oxidation of trace organic impurities in ultrapure water by UV and ozone
… and the combination of UV light and ozone in ultrapure water is discussed. Eighteen model compounds are chosen as the representative organic contaminants. Significant synergistic removal effect by the oxidation of the combination of UV light and ozone has been observed on all model compounds …
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A STUDY OF BACTERIAL ADAPTATION TO ULTRAVIOLET LIGHT IN ULTRAPURE WATER SYSTEMS
… is an essential unit operation in ultra pure water treatment systems forits efficiency in treating microbes and oxidizing organics. This research investigated allfactors that affect the ability of UV light to deactivate and kill microorganisms. Morespecifically, bacterial growth conditions and …
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The Effect of Static Pressure on the Inertial Cavitation Threshold and Collapse Strength
… threshold was measured up to 30 MPa in ultrapure water using a high quality factor spherical resonator. The threshold increased linearly with the hydrostatic pressure and was found to be temperature dependent. The strength of the bubble collapse at the threshold was measured in terms of …
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Sustainable P2 design for batch-based specialty chemical manufacture
… system, in particular the large composition of water in the waste stream which requires significant energy to distill. Substitution of NMP with dimethyl sulfoxide (DMSO) and sulfolane reduces life cycle emissions by 44% and 47%, respectively, even without recovery, due to their greener …
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Validação bioanalítica, análise farmacocinética e preparo de uma nanoemulsão do α-bisabolol
… isocratic flow of 1 ml/min of acetonitrile and ultrapure water (80:20), read at wavelengths of 201 and 240 nm.. The developed method proved to be precise, accurate, sensitive, and selective for quantifying the compound up to one month after freezing. The applicability of the method was carried …
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The development and validation of an ABL835 FLEX Blood Gas Analyser method for the quantitation of glucose, lactate, and electrolytes in post-mortem vitreous humour
… analysed directly or diluted in a 1:1 ratio with ultrapure water, when required. All analytes demonstrated acceptable bias, within-run and between-run precision at concentrations above 1.6 mmol/L. Results indicated suitable stability for K+, Na+, Cl-, glucose and lactate across all storage …
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Toxicity and detoxification of imidacloprid in mouse ovarian follicles
… through ingestion of contaminated food and water as well as through interactions with companion animals. IMI is readily absorbed in the gastrointestinal tract and undergoes phase I and phase II biotransformation in the liver prior to excretion primarily in the urine. In the liver, IMI is …
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Trace metals and nutrients in aerosols over the tropical and subtropical North Atlantic Ocean
… of nanomolar nitrate and phosphate in seawater before going on to describe in more detail a system built in our laboratory comprising liquid waveguide capillary cells connected to a conventional segmented-flow autoanalyser. This approach is suitable for routine field measurements of …
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Evaluation of collection protocols for the recovery of biological samples from crime scenes
… swab, double swab and pipetting, using distilled water TE buffer and commercial cell lysis (Qiagen) as a wetting agent. An enhancement in quantity and quality of DNA was seen when the double swab collection method was used with the commercial lysis buffer. This led to the development of an …
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In Situ Oxidation of 1,4-Dioxane with Persulfate-Based Oxidation Activated by Iron Minerals
Groundwater contaminant plumes of 1,4-dioxane (dioxane) and its co-contaminants (chlorinated solvents) have been found at many hazardous waste sites. There is increasing attention paid to the persulfate-based activation method for in situ degradation of organic contaminants due to its high …
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Investigations towards a better understanding of arsenic-sulfur speciation in aquatic environments: Formation, stability, structural characterization, and conflicting analyses
… either due to high pH or sample dilution in ultrapure water inhibits the formation of thioarsenites by SH--OH- competition. These facts make the current IC-ICP-MS method even under anoxic conditions unsuitable for thioarsenite analyses. However, thioarsenites were shown to be necessary …
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Monitoring of Persistent Organic Pollutants (POPs) in marine biota from the Catania Gulf (Sicily, Italy) and development of new sensitive analytical methods for their detection
… matrices (biota, volcanic ashes and seawater), as well as on the monitoring of these pollutants in Mullus Surmuletus of the Catania Gulf (Sicily, Italy) and on the evaluation of the potential human health risks associated to the consumption of fish. As concerns the development of more …
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Interfacial Electrochemistry and Surface Characterization: Hydrogen Terminated Silicon, Electrolessly Deposited Palladium & Platinum on Pyrolyzed Photoresist Films and Electrodeposited Copper on Iridium
… the integrated circuit (IC) industry. Ultra-pure water is extensively used for the cleaning and surface preparation of silicon surfaces. This work studies the effects of ultra-pure water on hydrogen passivated silicon surfaces in a short time frame of 120 minutes using fourier transform infrared …
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Water stability of organic and electrolyte-gated field-effect transistors
… Electro-Chemical Transistor (OECT). However, water constitutes a key factor in charge trapping and device degradation in organic materials, due to its strong dipole moment, high dielectric constant, and its omnipresence in almost all processing, environmental, and operational conditions. In …