High temperature mass detection using a carbon nanotube bilayer modified quartz crystal microbalance as a GC detector.
High temperature mass detection using a carbon nanotube bilayer modified quartz crystal microbalance as a GC detector.
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DOI：
10.1021/ac504101a
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发表时间：
2015-03-03
影响因子：
7.4
通讯作者：
Patel SV
中科院分区：
文献类型：
--
作者：
Benz M;Benz L;Patel SV
采用新型石英晶体微天平传感器（QCM）组装了一台小型便携式气相色谱仪（GC），用于痕量管制物质的检测。QCM晶体表面改性与各种吸附材料，以增加吸附，从而放大质量检测。单一聚合物薄膜涂层将QCM响应提高了1-2个数量级，同时在100 °C以上工作。与未涂覆的晶体相比，在这样的膜上添加一层碳质纳米材料（石墨烯或碳纳米管）显著地将灵敏度提高了3个数量级。通过使用GC柱和检测器温度升至220 °C，在数分钟内分离和检测亚微克量的受控物质。通过对样品导入过程中使用的样品拭子进行机械磨损，实现了灵敏度的额外10倍增强。这项研究证明了一种新的使用聚合物复合材料改性QCM作为化学传感器在高温下。
A small, portable gas chromatograph (GC) was assembled for the trace detection of controlled substances using a novel quartz crystal microbalance sensor (QCM). The QCM crystal surface was modified with a variety of sorption materials to increase adsorption thereby amplifying mass detection. Single polymer thin film coatings increased the QCM response by 1–2 orders of magnitude, while operating at over 100 °C. Adding a layer of carbonaceous nanomaterial (graphene or carbon nanotubes) above such a film dramatically increased sensitivity by up to 3 orders of magnitude compared to uncoated crystals. Separation and detection of submicrogram quantities of controlled substances was carried out within minutes by employing a GC column and detector temperature ramp up to 220 °C. An additional 10-fold enhancement in sensitivity was achieved by mechanical abrasion of the sample swabs used in the sample introduction process. This study demonstrated a novel use of a polymer composite modified QCM as a chemical sensor at high temperatures.
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影响因子：
8.4
作者：
Lucklum, R;Hauptmann, P
通讯作者：
Hauptmann, P
影响因子：
--
作者：
Demessence, Aude;Boissiere, Cedric;Sanchez, Clement
通讯作者：
Sanchez, Clement
通过聚合物涂层 QCM 传感器选择性检测痕量对二甲苯
影响因子：
8.4
作者：
Fan, Xiao;Du, Binyang
通讯作者：
Du, Binyang
影响因子：
1.3
作者：
KARASEK, FW;GIBBINS, KR
通讯作者：
GIBBINS, KR
影响因子：
8.4
作者：
Kikuchi, M;Shiratori, S
通讯作者：
Shiratori, S