Jiang Qiong, Zhang Shuwu, Feng Juanjuan, Sun Min
College of Plant Protection, Gansu Agricultural University/Biocontrol Engineering Laboratory of Crop Diseases and Pests of Gansu Province, Lanzhou 730070, China.
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
Nanomaterials (Basel). 2022 May 22;12(10):1766. doi: 10.3390/nano12101766.
To improve the extraction performance of the silica aerogel, a melamine-terephthalaldehyde polymer was used to hybridize silica aerogel, and the hybridized aerogel was coated on the surface of stainless steel wire to prepare a fiber-filled extraction tube through placing four wires into a polyetheretherketone tube. The tube was combined with high-performance liquid chromatography, then the online extraction and detection were established. Several polycyclic aromatic hydrocarbons (PAHs) were selected as the target analytes. Under the optimum extraction and desorption conditions, the limit of detection was as low as 3.0 ng L, and the linear range was 0.01-20.0 μg L. The enrichment factors of PAHs were in the range of 1724-2393. Three environmental water samples of mineral water, tap water and river water were analyzed by this method, and the recoveries that spiked at 1.0-10.0 μg L were between 80.5-126%. It showed many advantages compared with other methods, such as better sensitivity, faster detection and online analysis.
为提高二氧化硅气凝胶的萃取性能，采用三聚氰胺-对苯二甲醛聚合物对二氧化硅气凝胶进行杂化，并将杂化后的气凝胶涂覆在不锈钢丝表面，通过将四根钢丝放入聚醚醚酮管中制备纤维填充萃取管。该管与高效液相色谱联用，建立了在线萃取和检测方法。选择了几种多环芳烃（PAHs）作为目标分析物。在最佳萃取和解吸条件下，检测限低至3.0 ng/L，线性范围为0.01-20.0 μg/L。PAHs的富集因子在1724-2393范围内。采用该方法对矿泉水、自来水和河水三种环境水样进行了分析，加标浓度为1.0-10.0 μg/L时的回收率在80.5%-126%之间。与其他方法相比，它具有许多优点，如灵敏度更高、检测速度更快和可在线分析。
