分析测试学报2025，Vol.44Issue(10)：2177-2183,7.DOI:10.12452/j.fxcsxb.24120907
基于Zn/NA-CDs荧光探针检测烟叶中游离氨基酸
Detection of Free Amino Acids in Tobacco Leaves Based on Zn/NA-CDs Fluorescent Probe
摘要
Abstract
In this study,a new type of zinc-doped carbon point(Zn/NA-CDs)was synthesized by hy-drothermal method using epinephrine and zinc chloride as precursor.The optical properties of Zn/NA-CDs were studied by UV-Vis spectrophotometry and fluorescence spectrophotometry.The struc-tural characteristics of Zn/NA-CDs were studied by X-ray photoelectron spectroscopy(XPS),trans-mission electron microscope(TEM),Fourier transform infrared spectroscopy(FT-IR),and X-ray diffraction(XRD).Zn/NA-CDs showed a relatively high photoluminescent quantum yield of about 43.28%.In this study,amino acids could react with phthalic aldehyde(OPA)to produce schiff base products,which can produce fluorescence sensitization on Zn/NA-CDs.Under the optimal analysis conditions,with glycine as the model molecule,the fluorescence intensity of the system was linear with the concentration of glycine in the range of 2.5-250 mg/L,and the detection limit was 0.6 mg/L.The method can be used for the determination of amino acids in actual tobacco samples,and satisfac-tory test results were obtained.关键词
氨基酸/席夫碱/Zn/NA-CDs/荧光探针/烟叶Key words
amino acids/schiff base/Zn/NA-CDs/colorimetric probe/tobacco leaves分类
化学化工引用本文复制引用
何彬,周渭皓,高宪辉,张海,陈敬悦,王雨童,杨德志,杨亚玲..基于Zn/NA-CDs荧光探针检测烟叶中游离氨基酸[J].分析测试学报,2025,44(10):2177-2183,7.基金项目
中国烟草总公司云南省公司一般项目(2022530000216102) （2022530000216102）
