CAJ | 학술논문

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0.5~100.0μg/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。
목적：건립망과장중을희리잔류량적자동정공기상색보법검측방법。방법장망과장양품가입정공양품병중，가입괄량포화경양화갑용액，재80℃적조건하항온가열，경화염검측기검측산생적을희함량，외표법정량。결과을희리재0.5~100.0μg/mL농도범위내선성관계량호，상관계수균대우0.9999。첨가수평위0.02、0.05、0.10 mg/kg시，을희리적평균회수솔분별위79.9%、85.4%화86.8%，상대표준편차위3.97%~5.26%。결론해방법간편、쾌속、경제실용，괄용성강，결과준학가고，가용우양품비량쾌속검측。
ABSTRACT:Objective To establish a method for the determination of the ethephon residue in mango pu-ree by combining AutoHS headspace sampler with gas chromatography (GC).MethodsAfter charging man-go 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.ResultsThe 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%.ConclusionThe method is simple, rapid, eco-nomical and practical, and the analyzed result is accurate and reliable, which is suitable for the rapid determi-nation of sample.