Ding Xinru, Zhu Jun, Zhang Yue, Xia Qian, Bi Wentao, Yang Xiaodi, Yang Jinfei
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China.
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China; Department of Preventive Medicine and Health Management & College of Pharmacy, Hebei University, Baoding 071002, China.
Talanta. 2016 Jul 1;154:119-26. doi: 10.1016/j.talanta.2016.03.065. Epub 2016 Mar 21.
Well-dispersed velvet-like graphitic carbon nitride nanoparticles with a large surface area were prepared and utilized for separation and concentration of bioactive compounds from fruit extracts by fast (20s) forced adsorption. The large surface area, enhanced non-covalent interactions of this nanoparticle with bioactive compounds and good dispersity in different solvents benefited its application as a good sorbent. To evaluate their adsorption capabilities, these carbon nitride nanoparticles were used for separation and concentration of flavonoids from fruit extracts by a forced-adsorption dispersive solid phase extraction method. The combined use of this nanoparticle and our experimental conditions showed excellent precision (3.6-4.7%) and sensitivity (limits of detection (S/N=3): 0.6-3.75ng/mL). This research provides an alternative strategy to prepare suitable sorbents for adsorption, separation and concentration of various compounds from different extracts.
制备了具有大表面积的分散良好的绒状石墨相氮化碳纳米颗粒，并通过快速（20秒）强制吸附用于从水果提取物中分离和浓缩生物活性化合物。这种纳米颗粒的大表面积、与生物活性化合物增强的非共价相互作用以及在不同溶剂中的良好分散性有利于其作为良好吸附剂的应用。为了评估它们的吸附能力，通过强制吸附分散固相萃取法将这些氮化碳纳米颗粒用于从水果提取物中分离和浓缩黄酮类化合物。这种纳米颗粒与我们的实验条件的联合使用显示出优异的精密度（3.6 - 4.7%）和灵敏度（检测限（S/N = 3）：0.6 - 3.75 ng/mL）。本研究提供了一种替代策略，用于制备合适的吸附剂，以从不同提取物中吸附、分离和浓缩各种化合物。
