[Preparation of samples for proficiency testing of pesticide residue analysis in processed foods].
To conduct proficiency testing for the analysis of pesticide residues in processed foods, fortified samples of retort curry and pancake were examined. In the case of retort curry, heating and mixing were necessary at the time of preparation to provide a homogenous analytical sample. A mixture of 4 carbamates and 11 organophosphorus pesticides was spiked and 14 of them showed consistent results in the samples. In the case of pancake, 10 kinds of pesticides were added to the pastry. The prepared pastry was them cooked. The relative concentrations of most of the pesticides in the pancake were not affected and all the pesticides showed consistent results in the samples. These results showed that the two tested samples were suitable for proficiency testing.
Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan. okihasi@iph.pref.osaka.jp
Masahiro
M
Okihashi
Masakazu
M
Osakada
Kotaro
K
Uchida
Haruna
H
Nagayoshi
Takahiro
T
Yamaguchi
Kensaku
K
Kakimoto
Yukiko
Y
Nakayama
Hirotaka
H
Obana
D002219:Carbamates / Q000302:isolation & purification; D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D057140:Fast Foods / Q000032:analysis*; D005504:Food Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D059021:Laboratory Proficiency Testing / Q000379:methods*; D009943:Organophosphorus Compounds / Q000302:isolation & purification; D010573:Pesticide Residues / Q000302:isolation & purification*
D002219:Carbamates; D009943:Organophosphorus Compounds; D010573:Pesticide Residues