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Actinometers

Nitrate and Nitrite Ultraviolet Actinometers

319 q 1999 American Society for Photobiology 0031-8655/99 $5.00 1 0.00 Photochemistry and Photobiology, 1999,70(3): 319-328 Nitrate and Nitrite Ultraviolet Actinometers JosephJ.

CHEMICAL ACTINOMETRY

Chemical actinometry (IUPAC Technical Report) Abstract : This document updates the first version of the IUPAC technical report on "Chemical actinometers" published in Pure Appl. Chem. 61 , 187-210 (1989).

USING PHO TOSTABILITY CHAMBERS TO MEET THE REQUIREMENTS OF ...

Spectral radiometers are cumbersome to use and awkward to integrate with photostability chamber lamp controls. t est c ompletion c ontrol i ssues Chemical actinometers are inherently limited with respect to a photostability chamber.

Photostability white paper rev 09

Test Completion Control Issues Chemical actinometers are inherently limited with respect to a photostability chamber. They do not provide a mechanism to automatically turn the lamps off or alert the operator when the desired exposure level is reached.

Performance ofasingle-monochromator diode array ...

Although filter radiometers are usually more practical and versatile than chemical actinometers, they still rely on absolute calibrations made against chemical actinometers or radiometrically against primary standards to derive photolysis frequencies.

HANDBOOK OF PHOTOCHEMISTRY, THIRD EDITION

When phenanthroline is stored in the light for a long period, its photodecomposition products inhibit color development [7601, 8302]. 12b PHOTOCHROMIC ACTINOMETERS This kind of actinometers are based on a photochromic reaction, photoreversible or thermoreversible; therefore, the actinometric solution ...

Photolysis frequency of NO

Since spectroradiometers are calibrated using an irradiance standard and the actinometers are calibrated using gas phase standards, either the uncertainty in the molecular data used in calculatingj (NO 2) and the uncertainties asso-ciatedwiththe actinometer determination have a canceling effector the ...

INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY

Gas Phase Chemical Actinometers For reviews on UV and vacuum UV actinometers, cf . Pravilov, A.M. Gas-phase actinometry for UV and vacuum UV spectral regions, High Energy Chem. 21 (1987) 243-255, (Russian: Khim. Vys. Energ.

PURE AND APPLIED CHEMISTRY - H. J. KUHN', S. E. BRASLAVSKYl ...

Chemical acti no metry Con tents I. List of Actinometers 1.1 , Chemical Systems 1.1. I. Solid Phase 1.1.2. Gas Phase 1.1.3. Liquid Phase

Conventional tools for the study of excited states

4.2 Quantum yields Rate at which a process occurs of rate of formation of a product, or of disappearence of a reactant Intensity of light, i.e. rate of light absorption Φ = From standard analytical techniques Chemical systems or physical devices called actinometers allow the determination of the number of ...