自动顶空气相色谱法测定芒果浆中 乙烯利的残留量
目的 建立芒果浆中乙烯利残留量的自动顶空气相色谱法检测方法。方法 将芒果浆样品加入顶空样品瓶中, 加入适量饱和氢氧化钾溶液, 在80 ℃的条件下恒温加热, 氢火焰检测器检测产生的乙烯含量, 外标法定量。结果 乙烯利在0.5~100.0 μg/mL 浓度范围内线性关系良好, 相关系数均大于0.9999。添加水平为0.02、0.05、0.10 mg/kg时, 乙烯利的平均回收率分别为79.9%、85.4%和86.8%, 相对标准偏差为3.97%~5.26%。结论 该方法简便、快速、经济实用, 适用性强, 结果准确可靠, 可用于样品批量快速检测。
Objective To establish a method for the determination of the ethephon residue in mango puree by combining AutoHS headspace sampler with gas chromatography (GC). Methods After charging mango puree into headspace sample bottle, a certain amount of saturated KOH solution were added. Then the headspace bottle was heated up to 80 ℃ and ethylene released was detected by GC with a FID detector. The quantitation of ethephon was made by standard curve. Results The method showed a good linearity ranged from 0.5 to 100.0 μg/mL of ethephon concentration with correlation coefficients above 0.9999. The determined average recoveries were 79.9%, 85.4% and 86.8% at the spiked level of 0.02, 0.05and 0.10 mg/kg, respectively. The relative standard deviation was between 3.97%~5.26%. Conclusion The method is simple, rapid, economical and practical, and the analyzed result is accurate and reliable, which is suitable for the rapid determination of sample.
标题：自动顶空气相色谱法测定芒果浆中 乙烯利的残留量
英文标题：Determination of residue of ethephon in mango puree by capillary gas chromatography with AutoHS headspace sampler
作者：
付骋宇 陕西出入境检验检疫局
李莹 陕西出入境检验检疫局
孔祥虹 陕西出入境检验检疫局
李建华 陕西出入境检验检疫局
何强 陕西出入境检验检疫局
邹阳 陕西出入境检验检疫局
张璐 陕西出入境检验检疫局
中文关键词:顶空气相色谱法,乙烯利,芒果浆,
英文关键词:headspace gas chromatography,ethephon,mango puree,
发表日期：2015-09-01
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