期刊论文

Preparation of phenyl-modified silica nanoflake fibers and the solid-phase microextraction of polycyclic aromatic hydrocarbons

DU, Xinzhen

中文

色谱

Chinese Journal of Chromatography

1000-8713

2018

36

2

100-106

10.3724/SP.J.1123.2017.10009

国家自然科学基金(21265019).National Natural Science Foundation of China(21265019)

本校为其他机构

采用水热处理和溶胶-凝胶法在镍钛合金（ NiTi）纤维表面组装了二氧化硅纳米片（ SiO2 NFs）,成功制备了新 型 SiO： 纤维涂层,并用苯基三氯硅烷进行了自组装表面修饰,得到了可用于固相微萃取（ SPME）的 NiO/TiO2@ SiO2 NFs-Ph纤维.将制备的SPME纤维与高效液相色谱联用,通过对典型芳香化合物的分析评价了所制备纤维 的萃取性能.该纤维对多环芳烃（PAHs）具有较高的萃取率和良好的萃取选择性.实验优化了 pH值、搅拌速率、 萃取温度、萃取时间和离子强度对PAHs萃取率的影响.在优化条件下,5种 PAHs在各自的范围内呈良好的线性 关系,相关系数（r ）大于0.999,检出限为0.013~0. 108 pg/L.使用单根纤...

A novel silica-based solid-phase microextraction (SPME) fiber was successfully fabricated by the immobilization of silica nanoflakes (SiO2NFs) onto the hydrothermally treated nickel-titanium alloy (NiTi) wire using sol-gel method, followed by self-assembled surface modification of phenyltrichlorosilane. The extraction performance of the fabricated fiber was evaluated using typical aromatic compounds in direct-immersion mode of SPME. The fiber exhibited the high extraction capability and good extraction selectivity for polycyclic aromatic hydroc...