粮油食品科技
QuEChERS气相色谱质谱法测定花生油中17种邻苯二甲酸酯类物质
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Detection of 17 Phthalates in Peanut Oil by Advanced QuEChERS Coupled with Gas Chromatography-Mass Spectrometry
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    摘要:

    建立一种花生油中邻苯二甲酸酯类化合物检测方法,花生油样品以正己烷饱和乙腈提取,经25 mg乙二胺-N-丙基硅烷(PSA)和25 mg十八烷基硅烷键合硅胶(C18)净化,GC-MS选择离子监测(SIM)模式下检测,外标法定量。17种邻苯二甲酸酯类物质在0.02~3.0 mg/L浓度范围内呈良好线性,相关系数(r)均在0.999以上,检出限(LOD)在0.01~0.02 mg/kg之间,定量限(LQD)在0.03~0.05 mg/kg之间,加标回收率和精密度分别在76.8%~108.4%和1.10%~5.18%。方法操作简单快捷、灵敏度高、准确性好,可用以测定花生油中17种邻苯二甲酸酯类化合物。

    Abstract:

    To establish a method for the determination of phthalic acid esters in Peanut oil, Peanut oil samples were extracted with n-hexane saturated acetonitrile, purified by 25 mg PSA and 25 mg C18 and detected by GC-MS selected ion monitoring (SIM) mode detection, external standard method quantitative. The standard solution of 17 phthalates showed a good linearity in the concentration range of 0.02~3.0 mg/L, and the correlation coefficient (r) is above 0.999, the detection limit (LOD) was 0.01 mg/kg to 0.02 mg/kg, and the quantitative limit (LQD) was 0.03 mg/kg to 0.05 mg/kg. the recovery of standard addition was 92.47% to 108.72%, and the relative standard deviation was 1.10% to 5.94%.The method is simple, rapid, sensitive and accurate. and can be used for the determination of 17 phthalates in Peanut oils.

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高 霞,陈 辉,李玉秀,李文君,谭 敏. QuEChERS气相色谱质谱法测定花生油中17种邻苯二甲酸酯类物质[J].粮油食品科技,2020,28(5):138-143.

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  • 在线发布日期: 2020-09-16
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