基于DNA与单层二硫化钨的相互作用荧光法检测汞(Ⅱ)离子
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摘要
采用荧光法检测汞(Ⅱ)离子(Hg2+).讨论了该方法的可行性,研究了二硫化钨(WS2)的浓度对实验的影响.对不同浓度的Hg2+离子进行检测,随后,又研究了其选择性,以及其他金属离子对检测Hg2+离子过程中是否有干扰.实验结果表明该方法具有操作简单、成本低、选择性好等优点.
Fluorescence was used to detect mercury( Ⅱ) ions( Hg2+). The feasibility of this method was discussed and the effect of tungsten disulfide( WS2) concentration on the experiment was studied. Different concentrations of Hg2+ions were detected,followed by their selectivity,and whether other metal ions interfered with the detection of Hg2+ions. The experimental results show that this method has the advantages of simple operation,low cost and good selectivity.
Fluorescence was used to detect mercury( Ⅱ) ions( Hg2+). The feasibility of this method was discussed and the effect of tungsten disulfide( WS2) concentration on the experiment was studied. Different concentrations of Hg2+ions were detected,followed by their selectivity,and whether other metal ions interfered with the detection of Hg2+ions. The experimental results show that this method has the advantages of simple operation,low cost and good selectivity.
引文
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[3]韩雪,娄大伟,连丽丽,等.新型絮凝剂PSAM-CTS处理松花江水的研究[J].化工新型材料,2016,44(7):237-239.
[4]Guerrero M M L,Cordero M T S,Alonso E V,et al.Cold vapour generation electrothermal atomic absorption spectrometry and solid phase extraction based on a new nanosorbent for sensitive Hg determination in environmental samples(sea water and river water)[J].Microchemical Journal,2017,132:274-279.
[5]Xiong S,Xu J,Xie F,et al.Stripping analysis of Pb(Ⅱ),Cd(Ⅱ),Hg(Ⅱ)and Cu(Ⅱ)based on irradiated attapulgite/Ionic liquid composites[J].Chemical Engineering Journal,2017,316:383-392.
[6]Cai W,Xie S,Zhang J,et al.An electrochemical impedance biosensor for Hg2+detection based on DNA hydrogel by coupling with DNAzyme-assisted target recycling and hybridization chain reaction[J].Biosensors and Bioelectronics,2017,98:466-472.
[7]Liu Y,Liu Y,Xu L,et al.Highly selective,colorimetric detection of Hg2+based on three color changes of Au NPs solution from red through sandy beige to celandine green[J].Sensors and Actuators B:Chemical,2017,249:331-338.
[8]Erdemir S,Kocyigit O.A novel dye based on phenolphthalein-fluorescein as a fluorescent probe for the dual-channel detection of Hg2+and Zn2+[J].Dyes and Pigments,2017,145:72-79.
[9]Mir N,Heidari A,Beyzaei H,et al.Detection of Hg2+in aqueous solution by pyrazole derivative-functionalized Fe3O4@Si O2fluorescent probe[J].Chemical Engineering Journal,2017,327:648-655.
[10]Hao L,Gu H,Duan N,et al.An enhanced chemiluminescence resonance energy transfer aptasensor based on rolling circle amplification and WS2nanosheet for Staphylococcus aureus detection[J].Analytica chimica acta,2017,959:83-90.
[11]张千帆,高磊,田洪镇,等.二维层状材料过渡金属硫化物[J].北京航空航天大学学报,2016(7):1311-1325.