Photoluminescence Property of Co3O4 Nanowires

Co3O4 nanowire arrays are fabricated by electrodeposition with following heat-treatment in atmosphere ambient. Photoluminescence is investigated at 295K. In the experiment, when increasing the excitation light wavelength from 260 nm to 360 nm, two kinds of emissions corresponding to the increasing excitation light wavelength are observed. One of them alters the excited emission position, another keeps its emission position. The distinct behaviour of excited emissions related to the increasing excitation wavelength indicates that the mechanism of them must be different. According to the experimental comparison and first-principle calculation, the two kinds of emissions are discussed.     

用于ICP－AES双套可拆式循环喷雾系统

研制了一种用于ＩＣＰ－ＡＥＳ小体积样品分析的循环喷雾系统，该系统是将同心喷雾器垂直安装在可拆式双套筒雾室中，具有测定精密度好，检出限低，样品溶波消耗少，喷雾系统易于清洗等特点。     

流动注射在线萃取—火焰原子吸收光谱法测定钢样中痕量钴和镍

提出了一种流动注射成线萃取－火焰原子吸收光谱法测定钢样中痕量钴和镍的分析方法，研究了在线萃取流程中各项最佳参数，检出限钴为０．０１０μｇ．ｍｌ＾－１镍为０．０２１μｇ．ｍｌ＾－１，分析速度为２０～３０次．ｈ＾－１。经钢标准样品分析验证结果可靠。     

溶剂萃取非水介质氢化物发生-无色散原子荧光光谱法测定痕量锑

本文提出了用乙醇作为NaBH_4的溶剂,APDC-MIBK萃取,有机相氢化物发生原子荧光光谱法测定水样中痕量锑的新方法。与已报道的二甲基甲酰胺(DMF)作为NaBH_4的溶剂相比较,乙醇具有价廉、无毒性以及荧光背景小和可以在较低酸度下发生氢化物的特点。对非水介质氢化物发生法的推广应用具有一定的实用价值。     

Abnormal Photoluminescence Properties of Polycrystalline ZnO Nanowire Arrays Synthesized by Electrodeposition

Large-scale ZnO nanowire arrays are synthesized by electrodeposition with subsequent heat treatment in atmosphere ambient at 450-650℃. Photoluminescence （PL） is investigated at 295K. Abnormal PL properties of an unusual sharp emission at 485 nm and a broad ultraviolet emission which are different from the other works of ZnO PL before are observed. Field emission scanning electronic microscopy and transmission electron microscopy results show that the length of Zn 0 nanowires is nearly 5μm and their diameter is about 70 nm. X-ray diffraction and electron diffraction results reveal that the ZnO nanowires are a polycrystalline structure.     

硼氢化钠乙醇溶液-有机体系氢化物发生原子荧光光谱法测定饮用水中痕量砷的研究

本文提出用乙醇作为 NaBH_4的溶剂,APDC-MIBK 有机相氢化物发生原子荧光光谱法测定饮用水中砷。与 DMF 相比,乙醇溶剂具有价廉、无毒性以及荧光背景小,可以在较低酸度下发生氢化物的特点。对非水介质氢化物发生法的推广应用具有较大的实用价值。