Rapid magnetic solid-phase extraction based on magnetic multiwalled carbon nanotubes for the determination of polycyclic aromatic hydrocarbons in edible oils.
Rapid magnetic solid-phase extraction based on magnetic multiwalled carbon nanotubes for the determination of polycyclic aromatic hydrocarbons in edible oils.
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DOI：
10.1021/jf203973s
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发表时间：
2011-11
影响因子：
6.1
通讯作者：
Qin Zhao;F. Wei;Yan-Bo Luo;Jun Ding;Neng Xiao;Yuqi Feng
中科院分区：
文献类型：
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作者：
Qin Zhao;F. Wei;Yan-Bo Luo;Jun Ding;Neng Xiao;Yuqi Feng
本研究采用简单的方法制备了磁性多壁碳纳米管，并将其应用于食用油样品中8种重分子量多环芳烃（PAHs）的磁固相萃取（MSPE），包括芘、苯并[a]蒽、苯并[b]荧光蒽、苯并[k]荧光蒽、苯并[a]芘、茚并[1,2,3-cd]芘、二苯并[a，h]蒽和苯并[g，h，i]苝。考察了脱附溶剂种类和体积、抽脱时间、洗涤溶液和吸附剂用量等因素对萃取效率的影响。在优化条件下，建立了气相色谱-质谱联用法测定食用油中多环芳烃的简便有效方法。整个预处理过程快速，可在10 min内完成。目标多环芳烃的定量限为0.34 ~ 2.9 ng/g。油样的加样回收率为87.8 ~ 122.3%，日内rsd < 6.8%，日内rsd < 9.6%。该方法成功地应用于本地市场7种食用油中多环芳烃的分析。
In this study, magnetic multiwalled carbon nanotubes were fabricated by a simple method and applied to magnetic solid-phase extraction (MSPE) of eight heavy molecular weight polycyclic aromatic hydrocarbons (PAHs) including chrysene, benzo[a]anthracene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, indeno[1,2,3-cd]pyrene, dibenzo[a,h]anthracene and benzo[g,h,i]perylene from edible oil samples. Several parameters affecting the extraction efficiency were investigated, including the type and volume of desorption solvent, extraction and desorption time, washing solution and the amount of sorbent. Under the optimized conditions, a simple and effective method for the determination of PAHs in edible oils was developed by coupling with gas chromatography-mass spectrometry (GC-MS). The whole pretreatment process was rapid, and it can be accomplished within 10 min. The limits of quantitation for the target PAHs were found to be 0.34-2.9 ng/g. The recoveries in oil sample were in the range 87.8-122.3% with the RSDs less than 6.8% (intraday) and 9.6% (interday). This method was successfully applied to the analysis of PAHs in seven kinds of edible oils from local markets.