The contents of phthalate acid esters(PAEs) BBP,DBP,DEHP,DNOP,DINP and DIDP in milk were investigated by GC/MS.According to the U.S.environmental protection agency(EPA),the extraction method of room temperature oscillation was better than ultrasonic.The milk samples pre-treatment were extracted with n-Hexane using constant temperature shocker at room temperature 1.5 h.The recovery rate of each PAEs were 85.00% to 102.14%,relative standard deviation(RSD) values were 1.88% to 5.50%.The results indicated that ...