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المؤلفAl-Saad, Khalid A.
المؤلفAmr, Mohammed A.
المؤلفHelal, Abdulfattah I.
تاريخ الإتاحة2019-11-11T11:13:29Z
تاريخ النشر2011-04-01
اسم المنشورBiological Trace Element Research
المعرّفhttp://dx.doi.org/10.1007/s12011-010-8677-2
الاقتباسAl-Saad, K.A., Amr, M.A. & Helal, A.I. Biol Trace Elem Res (2011) 140: 103. https://doi.org/10.1007/s12011-010-8677-2
الرقم المعياري الدولي للكتاب01634984
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=79952488061&origin=inward
معرّف المصادر الموحدhttp://hdl.handle.net/10576/12310
الملخصThe determinations of selenium isotopes in biological samples were performed using both inductively coupled plasma collision/reaction cell quadruple mass spectrometer (CRC-ICP-QMS) and inductively coupled plasma sector field mass spectrometers (SF-ICP-MS). To significantly decrease the argon-based interferences at m/z 74 (36Ar38Ar), 76 ( 38Ar38Ar, 40Ar36Ar), 78 ( 38Ar40Ar), and 80 (40Ar40Ar), the gas-flow rates of a helium and hydrogen mixture used in the collision cell were optimized to 1.0 mL/min H2 and 3.5 mL/min He. Under the optimized condition, the precisions for natural selenium isotope ratio measurements of both instruments were evaluated and compared using 100 ppb Se standard solution. A modified external calibration quantification method was applied for the simultaneous determination of clinically used enriched selinocompounds ( 77Se-selenate, 82Se-selenite, 76Se- methylseleninic acidIV, 78Se-methylselenonic acid VI) and to examine their fate in rat organs (liver, kidney, and lung). © 2010 Springer Science+Business Media, LLC.
اللغةen
الناشرHumana Press Inc
الموضوعICP-MS
Isotope ratios
Labeling
Reaction cell
Selenium
العنوانCollision/reaction cell ICP-MS with shielded torch and sector field ICP-MS for the simultaneous determination of selenium isotopes in biological matrices
النوعArticle
رقم العدد1
رقم المجلد140
dc.accessType Abstract Only


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