Some routine and novel approaches to chemical dosimetry of far-ultraviolet light emitted by bactericidal tubes.
Detailed protocols are presented of two improved chemical procedures, based upon a photochemical decomposition of uranyl oxalate or potassium ferrioxalate, enabling a reliable measurement of the far-ultraviolet light emitted by a low-pressure mercury-vapour lamp. Besides, an original semi-quantitative method of UV dosimetry is presented and discussed, employing optical detection of a chromophore formed in the photo-oxidized glutathione. In addition to exemplary computations of UV light dose rate, a simple formula is proposed for recalculating its value while varying the distance from the lamp.
Zherebtsov
S V
SV
Institute of Cytology RAS, St. Petersburg. radcyt@mail.cytspb.rssi.ru
D002138:Calibration / Q000592:standards; D004307:Dose-Response Relationship, Radiation; D005978:Glutathione / Q000528:radiation effects; D008628:Mercury; D010070:Oxalates / Q000737:chemistry; D010084:Oxidation-Reduction; D010783:Photometry / Q000295:instrumentation* / Q000379:methods*; D011829:Radiation Dosage; D015203:Reproducibility of Results; D013997:Time Factors; D014466:Ultraviolet Rays
D010070:Oxalates; D008628:Mercury; D005978:Glutathione