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纳米复合材料催化发光法测定空气中的苯系物    

Determination of BTX in air utilizing cataluminescence on nanometer composite materials

文献类型:期刊文献

中文题名:纳米复合材料催化发光法测定空气中的苯系物

英文题名:Determination of BTX in air utilizing cataluminescence on nanometer composite materials

作者:周考文[1];赵艳霞[1];徐峥[1];佟岳[1]

第一作者:周考文

机构:[1]北京联合大学生物化学工程学院

第一机构:北京联合大学生物化学工程学院

年份:2006

卷号:25

期号:1

起止页码:13-16

中文期刊名:分析试验室

外文期刊名:Chinese Journal of Analysis Laboratory

收录:CSTPCD;;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;

语种:中文

中文关键词:苯系物;催化发光;纳米复合材料

外文关键词:benzene series compounds; cataluminescence (CTL) ; nanometer composite materials

摘要:基于苯系物在纳米材料上的催化发光现象,建立了一种快速测定空气中苯系物的方法。在铜锰铁复合纳米材料上的最佳测定条件为:检测波长460nm,表面温度320℃,气体流速120mL/min。方法的检出限(3σ)为0.5mg/m^3,线性范围为1~80mg/m^3,相关系数为0.9995。对常见共存物的研究表明,方法有较好的选择性。
A new method based on cataluminescence (CTL) generated on the surface of nanometer materials is proposed for direct determination of BTX (benzene, toluene, p-xylene, o-xylcnc, m-xylene) in air. The optimum experimental conditions were tested. Selective determination could be achieved at a wavelength of 460 nm. The surfacc temperature of nanosized materials is about 320℃ The flow rate of cartier air is around 120 mL/min. The limit of detection of this method is 0.5 mg/m^3 . The linear range of CTL intensity versus concentration of benzene is 1 - 80 mg/m^3 , and the correlation coefficient is 0. 9995. The recovery of testing 5 standard benzene samples by this method is 98.8 % - 101. 0%. Common coexisting matters, such as carbon monoxide, sulfur dioxide, formaldehyde, methanol and so on, do not disturb the determination of BTX. This method allows rapid determination of BTX in air.

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