Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, P. R. China.
J Sep Sci. 2019 Jun;42(12):2163-2170. doi: 10.1002/jssc.201801333. Epub 2019 May 7.
Polydopamine was coated onto cotton fibers as the adsorbent to improve the extraction efficiency. Polydopamine-coated cotton fibers were placed into a polyetheretherketone tube for in-tube solid-phase microextraction. To develop an online analysis system, the extraction tube was connected with high-performance liquid chromatography. The tube was evaluated with five estrogenic analytes, and the extraction and desorption conditions were optimized to get high extraction efficiency. Under the optimum conditions, the enrichment factors of five analytes were 143-1745. An online analysis method was established, it had large linear ranges (0.10-40 and 0.16-40 μg/L), low limits of detection (0.03, 0.05 μg/L) and satisfactory repeatability (≤3.2%). The analysis method was applied to detect targets in the real samples like as hot water in new plastic cup and tap water. The relative recoveries spiked at 1 and 5 μg/L in these samples were investigated and the results were in the range of 83.7-109%.
将聚多巴胺涂覆在棉纤维上作为吸附剂，以提高萃取效率。将聚多巴胺涂覆的棉纤维置于聚醚醚酮管中进行管内固相微萃取。为了开发在线分析系统，将萃取管与高效液相色谱连接。该管用五种雌激素分析物进行了评估，并优化了萃取和洗脱条件以获得高萃取效率。在最佳条件下，五种分析物的富集因子为 143-1745。建立了一种在线分析方法，其线性范围较大（0.10-40 和 0.16-40 μg/L），检测限低（0.03、0.05 μg/L），重复性好（≤3.2%）。该分析方法用于检测实际样品中的目标物，如新塑料杯中的热水和自来水中的目标物。考察了在这些样品中 1 和 5 μg/L 加标时的相对回收率，结果在 83.7-109%范围内。
