'Uv visible' diaporamas de présentation

Absorption Spectrometry

Absorption Spectrometry. Particularly UV-Visible. One difference between certain compounds is their colour. Quinone is yellow ; Chlorophyll is green ;

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Absorption Spectrometry

Absorption Spectrometry. Particularly UV-Visible. One difference between certain compounds is their colour. Quinone is yellow ; Chlorophyll is green ;

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UV-VISIBLE MEASUREMENTS

UV-VISIBLE MEASUREMENTS. WHAT CAN WE RETRIEVE IN THE UV-VISIBLE?. Most easily retrieved (strongest features): O 3 (~300 n m), NO 2 (~300-500 nm), H 2 O (>500 nm) HCHO (250-350 nm) ClO (250-300 nm) BrO (300-380 nm) SO 2 (250-320 nm). [Gottwald et al., The SCIAMACHY Book, 2006].

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Molecular UV-Visible Spectroscopy

Molecular UV-Visible Spectroscopy. Lecture Date: January 30 th , 2013. Electronic Spectroscopy (Review). Spectroscopy of the electrons surrounding an atom or a molecule: electron energy-level transitions. Atoms: electrons are in hydrogen-like orbitals (s, p, d, f).

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Molecular UV-Visible Spectroscopy

Molecular UV-Visible Spectroscopy. Lecture Date: January 30 th , 2013. Electronic Spectroscopy (Review). Spectroscopy of the electrons surrounding an atom or a molecule: electron energy-level transitions. Atoms: electrons are in hydrogen-like orbitals (s, p, d, f).

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Drugs

Drugs. Overview Dependence and Criminal Activity Types / Classification Methods of Identification Collection and Preservation of Evidence. Drug Defined. a natural or synthetic substance produces physiological /psychological effects in humans / animals. Reasons for Drug Use Today.

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Lecture 3: Absorption - UV/Visible/IR and CD

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Ultraviolet-Visible Spectroscopy

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NeSSI Compatible Spectroscopic Flow Cells

NeSSI Compatible Spectroscopic Flow Cells. Mike Doyle Axiom Analytical, Inc. Unique Requirements of Spectroscopic Process Analysis. Use of broad spectrum optical radiation Need to couple to complex remote instruments Need to produce SPC plots from large arrays of data.

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NIR / UV-VIS Application

Requirements Consolidation of the Near-Infrared Channel of the GMES-Sentinel-5 UVNS Instrument: FP, 25 April 2014, ESTEC NIR cloud retrievals for UV/VIS trace-gases R.Siddans (RAL). NIR / UV-VIS Application. RAL Simulations based on retrieval scheme developed for Eumetsat A-band study

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Studies on synthesis, characterization and biological properties of Copper (II)-embelin complex

The present study describes, preparation, characterization and biological properties (Antioxidant & and hemolytic activity) of Copper (II)-embelin complex. Copper Nitrate from commercial source and embelin (extracted & purified from E.ribes) at 1:2 ratio were used for the preparation. About 56% yield of the complex was obtained upon purification. The characterization studies (FT-IR) revealed the shift in wavelength of C=O stretching frequency. With regard to biological properties, assessment of antioxidant profile using DPPH radical revealed, the parent compound embelin displayed 50% inhibition of DPPH radical at 26 µg/ml, whereas the complex showed only 39% inhibition at 150 µg/ml. Results on hemolytic activity emphasizes, only 40% RBC lyses was observed even at 150 µg/ml concentration for the complex, whereas it was 109 µg/ml for the parent compound embelin. The results of the study infers though Copper and embelin alone demonstrated potential biological activities, however, when they are in the form of complex the biological activities were found inferior with respect to DPPH radical scavenging activity.

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Assay of Pioglitazone HCL by Using UV Visible Spectrophotometer

Objective: The aim of study is to perform the assay of brand and active of Pioglitazone HCL (piozer 15mg) by using UV visible spectrophotometer. Methodology: Take brand of Hilton pharma Piogiltazone HCL (piozer 15mg) is compared with active of Piogiltazone HCL with brand (Piozer). Initially weighted 20 tablets of brand of Piogiltazone HCL (Piozer) then these tablets were uniformly grounded by using mortar and pestle and calculating the average weight of powder equivalent to 0.1006 gm of active i.e. Piogiltazone HCL was transferred into a volumetric flask containing 10mL of water. The solutions were sonication for 5-6 min and make up volume up to 50 ml with DI water. Result: The data result shows that the absorbance is directly proportion to concentration, it obeys to Beers lambert law and assay of brand (Piozer) and active of Piogiltazone HCL are within range of USP and British pharmacopeia linearity. The correlation coefficient for active and brand of Piogiltazone HCL (PLH) were found to be 0.9998 for brand (Piozer), 0.9915 for active (PLH). Conclusion: This method is easily used in routine Quality Control (Q.C) lab for the determination of the assay of any brand of Pioglitazone HCL by using UV spectrophotometer. This method is simple, accurate and economical.

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Vacuum Belt Filters Market- Global Industry Insights, Size, Share and Trends by 2022

Global Vacuum Belt Filters Market is expected to grow at a significant CAGR in the upcoming years as the scope and its applications are rising enormously across the globe. A vacuum belt filter is also termed as belt press filter or belt filter press, is an industrial equipment that separates filterable solids out of various different media like a cooling lubricants and process water.

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