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目的了解吉林省内市售水果中植物生长调节剂的残留情况,通过对监测数据的分析,为制定食品安全政策法规提供科学依据。方法 2015年从吉林省9个地区采集75份水果样品,采用BEH C18(2.1 mm×100mm,1.7μm)色谱柱,以乙腈和0.01%氨水为流动相,梯度洗脱,流速为0.3 m L/min,柱温35℃,多效唑,ESI(+);赤霉素、2,4-D、噻苯隆、氯吡脲和4-氯苯氧乙酸,ESI(-),在此色谱质谱条件下进行检测。结果 4-氯苯氧乙酸检出率为6.67%,赤霉素检出率10.67%,氯吡脲检出率为18.67%,多效唑检出率为16%,2,4-D检出率为16%,噻苯隆检出率0%。结论市售水果中植物生长调节剂残留量检出率比较高,应加大监测力度,通过监测数据的结果分析,采取相应措施以提高食品安全性。
Objective To understand the residues of plant growth regulators in commercial fruits in Jilin Province and to provide scientific evidence for the formulation of food safety policies and regulations through the analysis of monitoring data. Methods Seventy-five samples of fruits were collected from 9 areas of Jilin Province in 2015. The samples were eluted with BEH C18 (2.1 mm × 100 mm, 1.7 μm) column with acetonitrile and 0.01% aqueous ammonia as mobile phase at a flow rate of 0.3 m L / min, column temperature 35 ℃, paclobutrazol, ESI (+); gibberellin, 2,4-D, thidiazuron, mevalidine and 4-chlorophenoxyacetic acid, ESI Test. Results The detection rate of 4-chlorophenoxyacetic acid was 6.67%, the detection rate of gibberellin was 10.67%, the detection rate of chlorpheniramine was 18.67%, the detection rate of paclobutrazol was 16%, the detection rate of 2,4-D was 16%, thidiazuron detection rate of 0%. Conclusion The detection rate of plant growth regulators residues in commercial fruits is relatively high. Monitoring efforts should be intensified. Through the analysis of the results of monitoring data, measures should be taken to improve food safety.