کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1882532 1533538 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiation sensitive indicator based on tetrabromophenol blue dyed poly(vinyl alcohol)
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
Radiation sensitive indicator based on tetrabromophenol blue dyed poly(vinyl alcohol)
چکیده انگلیسی

Radiation sensitive indicators based on dyed polyvinyl alcohol (PVA) containing acid- sensitive dye (tetrabromophenol blue, TBPB) and chloral hydrate (CCl3·CH·(OH)2, 2,2,2-trichloroethane-1,1-diol) have been developed. These plastic film dosimeters undergo color change from blue (the alkaline form of TBPB) to yellow (the acidic form of TBPB), indicating acid formation. The concentration of radiation formed acids in the films containing different concentrations of chloral hydrate was calculated at different doses. These films can be used as dosimeters for food irradiation applications where the maximum of the useful dose ranges are between 1 and 8 kGy depending on chloral hydrate concentration in the film.The films have the advantage of negligible humidity effects on response in the intermediate range of relative humidity from 0 to 70% as good post irradiation stability when stored in the dark at room temperature. The overall combined uncertainty (at 2σ) associated with measurement of response (ΔA mm−1) at 623 nm for dose range 1–8 kGy is 4.53%.


► On irradiating TBPB/PVA films the color change from blue to green and yellow.
► The amount of acid formed depends on dose and concentration of chloral hydrate.
► The dose range 1–8 kGy the film can be used for food irradiation applications.
► The response of these films has negligible humidity effects from 0 to 70%.
► The combined uncertainty at 2σ using TBPB/PVA films was found to be 4.53%.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 86, May 2013, Pages 129–135
نویسندگان
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