Page 17 - Shimadzu Journal vol.1
P. 17

Food safety                                                                                                                                            17





                               5. US Environmental Protection Agency, Electronic code of federal
                                  regulation: Title 40: Part 180 - tolerances and exemptions for









                                    pesticide chemical residues in food.  http://www.ecfr.gov/cgi-bin/text-idx?c=ecfr&tpl=/ecfrbrows e/Title40/40cfr180_main_02.tpl 6. Japanese Ministry of Health, Labour and Welfare, Department of  Food Safety. 2006. Director Notice about Analytical Methods for  Residual Compositional Substances of Agricultural Chemicals, Feed  Additives, and Veterinary Drugs in Food (Syoku-An No. 0124001  January 24, 2005; amendments May 26, 2006).   7. Republic of China National Standard GB 2763-2005. 2005.  Maximum residue limits for pesticides in food, Ministry of Health  of the People's Republic of China and Ministry of Agriculture of  the People's Republic of China.  8. Republic of China National Standard GB 28260-20







































                               4. Conclusion  The results of the developed methodology show that the Shimadzu  LCMS-8040 triple quadrupole can achieve excellent sensitivity, linearity  and repeatability in food extracts for over 200 commonly analysed  pesticides. Limits of detection were less than 0.01 mg kg -1  (10 ppb) for  both the quantifying and qualifying transitions for all compounds  studied, while for 90% of compounds was less than 0.001 mg kg -1  (1ppb) (quantifying transition) and 0.002 mg kg -1  (2 ppb) (qualifying  transition); therefore providing excellent response, especially given  that the injection volume was only 2 µL. The sensitivity of the  LCMS-8040 was able to meet the 0.01 mg kg -1  (10 ppb) requirements  of regula



































































           global w430×h280                                                                                                                                          Fig. 3 Calibration curves, 0.005ʙ0.2mgkg-1  5ʙ200ppb , of eight pesticides in pear matrix








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