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Inter-laboratory Study to Define the Temperature Interval for a Thermoluminescence Heating Unit Used to Identify Irradiated Food

Ahn, Jae-Jun ; Akram, Kashif ; Baek, Ji-Yeong ; Kim, Yeon-Joo ; Kim, Moon-Young ; Jeong, Il-Yun ; Kwon, Joong-Ho

Food science and biotechnology, 2012, Vol.21 (3), p.853-857 [Periódico revisado por pares]

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  • Título:
    Inter-laboratory Study to Define the Temperature Interval for a Thermoluminescence Heating Unit Used to Identify Irradiated Food
  • Autor: Ahn, Jae-Jun ; Akram, Kashif ; Baek, Ji-Yeong ; Kim, Yeon-Joo ; Kim, Moon-Young ; Jeong, Il-Yun ; Kwon, Joong-Ho
  • É parte de: Food science and biotechnology, 2012, Vol.21 (3), p.853-857
  • Notas: KISTI1.1003/JNL.JAKO201224237134376
  • Descrição: EN 1788:2001 suggests defining the temperature range for the thermoluminescence (TL) heating unit to calculate the TL ratio ($TL_1/TL_2$). In the present study, practical temperature ranges were established by using well-characterized lithium fluoride (LiF, TLD-$100^{(R)}$) at 4 different research institutes in Korea. Temperature ranges differed according to models of TLD heating unit, which were wide in the case of $RIS{\emptyset}$ ($160-249^{\circ}C$) as compared with Harshaw ($155-232^{\circ}C$) TLD readers. The silicate minerals separated from irradiated turmeric samples were measured to check these intervals on a practical basis. The X-ray diffraction (XRD) analysis of separated minerals showed that quartz and feldspar minerals were the main source of well-characterized TL glow curve following irradiation. The TL glow peaks from the separated minerals were narrower in Harshaw than $RIS{\emptyset}$ TLD readers. The TL ratios determined after re-irradiation (1 kGy) for the tested minerals, using the pre-defined temperature intervals, provided the satisfactory results.
  • Idioma: Coreano
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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