纳米MgO催化发光检测硫化氢 |
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基金项目:国家自然科学基金(21505115);贵州省科学技术基金(黔科合LH字【2014】7406号,黔科合LH字【2016】7037号);兴义民族师范学院博士启动基金(16XYBS20) |
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中文摘要:研究了硫化氢在纳米MgO表面的催化发光现象,发现纳米MgO对硫化氢具有较好的特异性,据此设计了硫化氢催化发光传感器。通过优化设计建立了一种快速检测硫化氢的新方法,线性范围为2.00~200 ppm (r=0.999 3),检出限为0.8 ppm(信噪比S/N=3)。采用此传感器进行人工合成样品中硫化氢的加标回收分析,回收率为88.4%~97.2%。此传感器具有灵敏、快速、操作简便等优点,在硫化氢快速检测领域具有潜在应用前景。该文还探讨了硫化氢的催化发光反应机理。 |
中文关键词:硫化氢 催化发光 传感器 纳米氧化镁 |
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Detection of Hydrogen Sulfide Using a Cataluminescence Sensor Based on Nano-MgO |
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Abstract:The cataluminescent(CTL) phenomenon in the reaction of hydrogen sulfide on nano-MgO surface was studied.It was found that nano-MgO showed a good specificity towards hydrogen sulfide,a CTL sensor for hydrogen sulfide was developed on the basis of this phenomenon,then a rapid method for the detection of hydrogen sulfide was proposed after optimal design.The linear range for this method was 2.00-200 ppm(r=0.999 3),and the detection limit was 0.8 ppm at a signal to noise ratio(S/N) of 3.The sensor was applied in the spiked analysis of the artificial samples containing hydrogen sulfide with the recoveries between 88.4% and 97.2%.With the advantages of sensitivity,rapidness and easy operation,the sensor showed an application potential in the rapid detection of hydrogen sulfide.The possible CTL reaction mechanism of hydrogen sulfide was also discussed. |
Key Words:hydrogen sulfide cataluminescence sensor Nano-magnesium oxide |
引用本文:张国义,尹智伟,李飞,蒋玲,张仟春.纳米MgO催化发光检测硫化氢[J].分析测试学报,2017,36(9):1150-1154. |
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