资料摘要
资料下载利用HS-SPDE/GC/MS/MS技术测定头发中毒品含量。A new method combination, headspace solid-phase dynamic extraction coupled with gas chromatography/ tandem mass spectrometry (HS-SPDE/GC/MS/MS), is introduced to determine drugs of abuse in hair samples. This highly automated procedure utilizes SPDE for pre-concentration and on-coating derivatization as well as GC and triple quadrupole MS/MS for selective and sensitive detection. All these steps, apart from washing and cutting of the hair samples, are performed without manual intervention on a robot-like autosampler. SPDE is a solventless extraction technique related to solid-phase microextraction (SPME). The analytes are absorbed from the sample headspace directly into a hollow needle with an internal coating of polydimethylsiloxane by repeated aspirate/dispense cycles. The HS-SPDE/GC/MS/MS procedure was applied to the analysis of methadone, the trimethylsilyl derivatives of cannabinoids and the trifluoroacetyl derivatives of amphetamines and designer drugs. The method was shown to be sensitive with detection limits between 6 and 52 pg/mg hair matrix and precision between 0.4 and 7.8% by the use of an internal standard technique. Linearity was obtained from 0.1–20 ng/mg with coefficients of correlation between 0.995 and 0.999. Compared with conventional methods of hair analysis, HS-SPDE/GC/MS/MS is easier to use, substantially faster, with the degree of sensitivity and reproducibility demanded in clinical and forensic toxicology. The main advantage of the SPDE technique in relation to SPME is the robustness of the capillary. Copyright # 2003 John Wiley & Sons, Ltd.
瑞士CTC进样器各型号耗材
简介:Syringe Kits 4 Syringes and Syringe Plungers 5 Trays, Traysets and Stacks 6 Thermostatted Trayholders 7 - 8 PAL Dilutor 8 FlowCell, Washstations and Consumables 9 - 10 SPME Options 10 ITEX-2, Headspace and xt- Upgrade Kits 11 GC Mounting Kits and MHE Tool 12 Barcode Reader 13 Software, IQ/OQ Protocols and Tools 13
CTC进样器维护手册
简介:1. 任何时候不要触碰控制面板中,不知道含义的按钮、部件,以免引起机器错误操作。 2. 机器运动中如果发生异响,或发生碰撞立刻关机,查明原因后再重启 3. 长时间停机后,或使用中,最好能隔一段时间取下进样针,手动检查推杆是否顺畅, 吸液检查针头是否堵塞。推杆被堵塞是其最常见的故障。 4. 如需清洁轨道,用软布,无尘纸即可,可用少量酒精擦拭 5. 任何情况下,不要向机器任何部位加润滑油。CTC 为无润滑油设计。
瑞士CTC多功能自动进样器中文产品手册
简介:瑞士CTC分析仪器股份公司(CTC Analytics AG) 是世界领先的专业色谱进样设备厂商,其HPLC/LC MS、GC/GC MS 精密进样系统,因其独特的机械设计、可靠的运行性能,被ABI、Waters、Agilent、Varian等众多厂商所推崇。
CSI 300详解
简介:CSI 300设计原理,分析实列。 300系列是一个新设计的快速气相色谱仪来自英国ACS /CSI。300系列色谱仪并不是像常规气相色谱仪那样使用柱温箱加热,而是直接对色谱柱进行直接加热,该设计可以实现更快的升温和降温,这样就可以实现非常显著色谱快速分析优势,由于300系列不需要较大的柱温箱和额外的加热设备,所以它自身可以设计的比常规气相色谱仪更紧凑, 300系列尺寸仅为320x370 x340毫米。
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