采用固相萃取反相液相色谱法对苹果中4种新型植物生长调节剂残留量进行分离分析。方法回收率在90.1%~95.2%范围内,相对标准偏差范围为1.1%~2.4%。对氯苯氧乙酸、5-硝基愈创木酚钠、噻苯隆和氯吡脲的方法检出限分别为0.5,0.5,0.5,0.2 mg/kg。方法可实现此4种植物生长调节剂残留的定量测定。 Solid phase extraction reverse phase liquid chromatography (HPLC) was used to separate and analyze the four new plant growth regulators in apple. The recoveries of the method ranged from 90.1% to 95.2% with relative standard deviations ranging from 1.1% to 2.4%. The detection limits of p-chlorophenoxyacetic acid, 5-nitro-guaiacol sodium, thidiazuron and mevalidine were 0.5, 0.5, 0.5 and 0.2 mg / kg, respectively. The method can realize the quantitative determination of the four plant growth regulator residues.