定向原位生长TiO2纳米条涂层及其固相微萃取性能研究  

Oriented In-situ Growth of Titanium Dioxide Nano-stripe Coating and Its Solid Phase Microextraction Performance

作　　者：张雷 杜新贞[1,2] ZHANG Lei;DU Xin-zhen(School of Chemical Engineering,Northwest Normal University,Lanzhou Gansu 730070,China;Key Laboratory of Bioelectrochemical and Environmental Analysis in Gansu,Lanzhou Gansu 730070,China)

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070 [2]甘肃省生物电化学与环境分析重点实验室,甘肃兰州730070

出　　处：《辽宁化工》2021年第5期585-588,共4页Liaoning Chemical Industry

基　　金：国家自然科学基金项目(项目编号:21765020)。

摘　　要：钛丝在乙二醇与氟化铵组成的电解液中通过阳极氧化法制备了定向原位生长的二氧化钛纳米条(Ti@TiO_(2)NSs)涂层,将其用作固相微萃取纤维与高效液相色谱-紫外检测器(HPLC-UV)联用研究了对多环芳烃(PAHs)的萃取能力。结果表明:定向排列的Ti@TiO2NSs纤维对PAHs表现出优异吸附性,在优化条件下该检测方法在0.1~200mg·L^(-1)范围内呈现线性关系,检出限(LODs)在0.027mg·L^(-1)和0.133mg·L^(-1)之间。单支纤维日内和日间进行分析所得的相对标准偏差(RSDs)分别为1.33%~3.74%和2.39%~4.64%之间。对实际水样中的PAHs检测之后所得的加标回收率在91.10%~109.7%之间。The in-situ TiO2 nanostrip(Ti@TiO_(2) NSs) coating was prepared by anodic oxidation in an electrolyte consisting of ethylene glycol and ammonium fluoride. The coating was used as a solid phase microextraction fiber combined with high performance liquid chromatography-ultraviolet detector(HPLC-UV) to study the extraction ability of polycyclic aromatic hydrocarbons(PAHs). The results showed that the directed Ti@TiO2 NSs fibers exhibited excellent adsorption for both PAHs and UVFs, but the extraction efficiency for PAHs was better. Under optimized conditions,the detection method presented linear ranges in 0.1~200 mg·L^(-1). The limit of detection(LODs) of fiber was between 0.027 mg·L^(-1) and 0.133 mg·L^(-1). The relative standard deviations(RSDs) for intra-day and intra-day analyses of a single fiber ranged from 1.33%~3.74% and 2.39%~4.64%, respectively. After detecting PAHs in real water samples, the recoveries were between 91.10% and 109.7%.

关 键 词：固相微萃取 钛丝 阳极氧化 多环芳烃 

分 类 号：TQ340.6[化学工程—化纤工业]