文献类型：期刊文献

英文题名：On-chip solid phase extraction and in situ optical detection

作者：Li, Long[1];Iqbal, Jibran[2];Li, Hui[3];Zhang, Yuan[1];Sun, Lin[1];Zhu, Ying[1];Chen, Wanchao[1];Xi, Yongqing[1];Wu, Ting[1];Du, Yiping[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Zayed Univ, Coll Nat & Hlth Sci, Abu Dhabi, U Arab Emirates;[3]Dehong Teachers Coll, Dept Sci & Engn, Xianchi Rd 14, Mangshi 678400, Peoples R China

年份：2019

卷号：197

起止页码：299

外文期刊名：TALANTA

收录：;EI(收录号：20190306378736);WOS:【SCI-EXPANDED(收录号:WOS:000460710200040)】；

基金：This work was supported by Science and Technology Commission of Shanghai Municipality (No. 17142201100) and the Fundamental Research Funds for the Central Universities (No. 222201817022).

语种：英文

外文关键词：On-chip SPE; Optical detection; In situ; UV-Vis spectroscopy; Fluorescence spectroscopy

摘要：A device was designed integrating solid phase extraction (SPE) and in situ optical detection techniques. A chip assembled in the device to carry out SPE was enclosed in a fully reflective aluminum box to avoid loss of radiation flux in the optical measurement. The spectrum was measured on the SPE material directly after SPE. The device offers simple analytical operation without any elution step comparing with the traditional analytical methods with complicated procedures. The device and the developed analytical technique was used for the determination of rhodamine B and benzo[a]pyrene with UV-visible diffuse reflectance and solid phase fluorescence spectroscopies, respectively. Under optimal conditions, standard curves of rhodamine B and benzo[a] pyrene showed a linear relationship in concentration ranges of 10-800 mu g L-1 (R-2 = 0.99) and 0.07-3.33 mu g.L-1 (R-2 = 0.99), respectively. The limit of detections (LOD) were 7 mu g L-1 and 0.02 mu g L-1. The proposed device was successfully employed to quantify rhodamine B and benzo[a]pyrene in tap water samples. The results showed that the recoveries were 90-105% and the relative standard deviations (RSDs) were 2.53-5.55%, indicating that the device and analytical method is capable of trace analytes for rapid quantitative analysis in various samples.