PMID- 28025454 OWN - NLM STAT- MEDLINE DCOM- 20170308 LR - 20171016 IS - 1882-1006 (Electronic) IS - 0015-6426 (Linking) VI - 57 IP - 6 DP - 2016 TI - [Determination of Diphenylamine in Agricultural Products by HPLC-FL]. PG - 201-206 LID - 10.3358/shokueishi.57.201 [doi] AB - A method for the determination of diphenylamine in agricultural products was developed. Diphenylamine was extracted with acetonitrile from a sample under an acidic condition, passed through a C18 cartridge column, re-extracted with n-hexane, cleaned up on a PSA cartridge column, determined by HPLC with fluorescence detector and confirmed by liquid chromatography with tandem mass spectrometry. Average recoveries (n=5) from brown rice, corn, soybeans, potato, cabbage, eggplant, spinach, orange, apple and green tea were in the range from 76.7 to 94.9%, and the relative standard deviations were from 0.6 to 5.8% at concentrations equal to the maximum residue limits (MRLs). The quantification limits were 0.01 mg/kg, which is the uniform limit in the positive list system for agricultural chemical residues in food in Japan. FAU - Aoyagi, Mitsutoshi AU - Aoyagi M AD - Hokkaido Institute of Public Health. FAU - Chiba, Masahiro AU - Chiba M FAU - Kakimoto, Youichiro AU - Kakimoto Y FAU - Nemoto, Satoru AU - Nemoto S LA - jpn PT - Journal Article PL - Japan TA - Shokuhin Eiseigaku Zasshi JT - Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan JID - 0142214 RN - 0 (Acetonitriles) RN - 0 (Hexanes) RN - 0 (Pesticide Residues) RN - 2DDG612ED8 (n-hexane) RN - 9N3CBB0BIQ (Diphenylamine) RN - Z072SB282N (acetonitrile) SB - IM MH - Acetonitriles MH - Chromatography, High Pressure Liquid/*methods MH - Chromatography, Liquid MH - Crops, Agricultural/*chemistry MH - Diphenylamine/*analysis/isolation & purification MH - Fluorescence MH - Food Analysis/*methods MH - Hexanes MH - Pesticide Residues/*analysis/isolation & purification MH - Tandem Mass Spectrometry EDAT- 2016/12/28 06:00 MHDA- 2017/03/09 06:00 CRDT- 2016/12/28 06:00 PHST- 2016/12/28 06:00 [entrez] PHST- 2016/12/28 06:00 [pubmed] PHST- 2017/03/09 06:00 [medline] AID - 10.3358/shokueishi.57.201 [doi] PST - ppublish SO - Shokuhin Eiseigaku Zasshi. 2016;57(6):201-206. doi: 10.3358/shokueishi.57.201.