comparison between amperometric and chemiluminescence methods in detection and dosimetry of cobalt-60 gamma ray emission
نویسندگان
چکیده
background: hydrogen peroxide (h2o2), produced by gamma ray irradiation to watery solution, was used as an analytical parameter for dosimetry of cobalt-60 (60co) radiation. materials and methods: detection of the produced h2o2 was carried out using two methods: an amperometric biosensor fabricated by immobilization of anthraquinone 2-carboxylic acid modified horseradish peroxidase on glassy carbon electrode, and chemiluminescence technique using luminol as a fluorophore and diperiodatocuprate as a catalyst. results: in the first method, at the applied potential of -550 mv (vs. ag/agcl) the biosensor showed the sensitivity of 74.46 na/gray and detection limit of 0.061 gray (r.s.d=3.67% for n=3) towards h2o2 produced by 60co. in the second method, the sensitivity and detection limit for 60co gamma ray was determined to be 2.34 (luminescence intensity/gray) and 0.069 gray (r.s.d=4.16% for n=3), respectively. conclusion: the obtained results revealed that both proposed techniques, with leaner range from 0.25 to 5 grays are applicable for detection and dosimetry of gamma ray from 60co.
منابع مشابه
Comparison between Amperometric and Chemiluminescence methods in detection and dosimetry of cobalt-60 gamma ray emission
Background: Hydrogen peroxide (H2O2), produced by gamma ray irradiation to watery solution, was used as an analytical parameter for dosimetry of cobalt-60 (60Co) radiation. Materials and Methods: Detection of the produced H2O2 was carried out using two methods: an amperometric biosensor fabricated by immobilization of anthraquinone 2-carboxylic acid modified horseradish peroxidase on glassy car...
متن کاملinvestigation of single-user and multi-user detection methods in mc-cdma systems and comparison of their performances
در این پایان نامه به بررسی روش های آشکارسازی در سیستم های mc-cdma می پردازیم. با توجه به ماهیت آشکارسازی در این سیستم ها، تکنیک های آشکارسازی را می توان به دو دسته ی اصلی تقسیم نمود: آشکارسازی سیگنال ارسالی یک کاربر مطلوب بدون در نظر گرفتن اطلاعاتی در مورد سایر کاربران تداخل کننده که از آن ها به عنوان آشکارساز های تک کاربره یاد می شود و همچنین آشکارسازی سیگنال ارسالی همه ی کاربران فعال موجود در...
comparison between conventional and alternative technique in extraction of maxillary molars
چکیده ندارد.
15 صفحه اولon the comparison of keyword and semantic-context methods of learning new vocabulary meaning
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
15 صفحه اولassessment of deep word knowledge in elementary and advanced iranian efl learners: a comparison of selective and productive wat tasks
testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...
منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
iranian journal of radiation researchجلد ۱۲، شماره ۴، صفحات ۳۷۷-۳۸۲
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023