色谱2018，Vol.36Issue(2)：100-106,7.DOI:10.3724/SP.J.1123.2017.10009
苯基修饰二氧化硅纳米片纤维的制备及其对多环芳烃的固相微萃取
Preparation of phenyl-modified silica nanoflake fibers and the solid-phase microextraction of polycyclic aromatic hydrocarbons
摘要
Abstract
A novel silica-based solid-phase microextraction(SPME)fiber was successfully fab-ricated 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 hydrocarbons(PAHs)in water samples. The influences of stirring rate,extraction tempera-ture,extraction time and ionic strength on the extraction efficiencies were optimized coupled to HPLC with UV detection. Under the optimized conditions,the five PAHs presented good linearity in the certain mass concentration ranges with correlation coefficients(r)greater than 0.999, and LODs ranged from 0.013 to 0.108 μg/L. The intra-day and inter-day RSDs were from 4.1%to 5.9% and 4.8% to 6.8% for the PAHs at the spiked level of 50 μg/L with the single fiber, respectively. The recoveries of the five PAHs in real water samples spiked at 10 μg/L and 30 μg/L ranged from 90.8% to 105.7% and 93.6% to 103.1%,respectively. Moreover,the phenyl-modified SiO2NFs coated NiTi fiber has high stability and good preparation reproducibility. The developed method is suitable for the concentration and determination of the target PAHs in environmental water samples.关键词
固相微萃取/二氧化硅纳米片/镍钛合金丝/多环芳烃Key words
solid-phase microextraction(SPME)/silica nanoflakes(SiO2NFs)/nickel-titanium alloy(NiTi)wire/polycyclic aromatic hydrocarbons(PAHs)分类
化学化工引用本文复制引用
周珊珊,金盼霞,王子宜,王雪梅,杜新贞..苯基修饰二氧化硅纳米片纤维的制备及其对多环芳烃的固相微萃取[J].色谱,2018,36(2):100-106,7.基金项目
国家自然科学基金(21265019).National Natural Science Foundation of China(No. 21265019). （21265019）
