TY - JOUR
T1 - Detection of Irradiated In-Shell Peanuts (Arachis hypogaea) by Screening PPSL and Confirmatory TL Luminescence Methods
AU - Roman-Lopez, J.
AU - Lozano, I. B.
AU - Diaz-Góngora, J. A.I.
AU - Guzman-Castañeda, J. I.
AU - Cruz-Zaragoza, E.
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/9/15
Y1 - 2019/9/15
N2 - In this work, the luminescence methods of pulsed photo-stimulated luminescence (PPSL, as screening) and thermoluminescence (TL, as confirmatory) were used for identification of non-irradiated and low-dose irradiated (1–5 kGy) in-shell peanuts from light emissions of silicate minerals incorporated in the shell. The minerals were irradiated with 90Sr beta particles, 60Co and 137Cs gamma rays. Screening PPSL response detected peanut shell as irradiated from 80 Gy for 60Co and 30 Gy for 137Cs gamma rays. Irradiated (60Co and 137Cs) peanut shell samples were positively detected with PPSL after 4.5 and 14 months. A complex TL glow curve composed of at least two maxima was exhibited by the minerals. Using the TL1/TL2 ratio, the in-shell peanuts were identified as irradiated from 50, 120, and 100 Gy of 90Sr, 60Co, and 137Cs radiation, respectively. Moreover, the TL glow curve shape was also used to identify the peanut shell minerals as irradiated at lower dose of radiation. After 34 days of storage, the peanut shell minerals showed enough TL emissions for their identification as irradiated.
AB - In this work, the luminescence methods of pulsed photo-stimulated luminescence (PPSL, as screening) and thermoluminescence (TL, as confirmatory) were used for identification of non-irradiated and low-dose irradiated (1–5 kGy) in-shell peanuts from light emissions of silicate minerals incorporated in the shell. The minerals were irradiated with 90Sr beta particles, 60Co and 137Cs gamma rays. Screening PPSL response detected peanut shell as irradiated from 80 Gy for 60Co and 30 Gy for 137Cs gamma rays. Irradiated (60Co and 137Cs) peanut shell samples were positively detected with PPSL after 4.5 and 14 months. A complex TL glow curve composed of at least two maxima was exhibited by the minerals. Using the TL1/TL2 ratio, the in-shell peanuts were identified as irradiated from 50, 120, and 100 Gy of 90Sr, 60Co, and 137Cs radiation, respectively. Moreover, the TL glow curve shape was also used to identify the peanut shell minerals as irradiated at lower dose of radiation. After 34 days of storage, the peanut shell minerals showed enough TL emissions for their identification as irradiated.
KW - Confirmatory TL
KW - Gamma rays
KW - In-shell peanuts
KW - Screening PPSL
KW - Sr beta radiation
UR - http://www.scopus.com/inward/record.url?scp=85067678371&partnerID=8YFLogxK
U2 - 10.1007/s12161-019-01557-w
DO - 10.1007/s12161-019-01557-w
M3 - Artículo
SN - 1936-9751
VL - 12
SP - 2069
EP - 2077
JO - Food Analytical Methods
JF - Food Analytical Methods
IS - 9
ER -