摘要
采用分子印迹技术与g-C_(3)N_(4)材料复合修饰玻碳电极(GCE),建立了伏安法快速测定磺胺甲噁唑(SMX)的新方法。通过SEM,XRD,FT-IR表征手段对所制备的分子印迹型g-C_(3)N_(4)(MIP-g-C_(3)N_(4))电极材料进行表征,并考察了缓冲溶液p H值对电流响应的影响,确定最佳的响应条件。实验结果表明,pH为6时,电流响应最为强烈。另外,采用循环伏安法对比探究磺胺甲噁唑在裸GCE、g-C_(3)N_(4)/GCE和分子印迹型g-C_(3)N_(4)/GCE电极上的电化学行为,结果表明:分子印迹型g-C_(3)N_(4)/GCE电极对磺胺甲噁唑测定的灵敏度显著地提高。该传感器测定SMX的结果具有较宽的线性范围(0.5~103.7μmol/L)和较低的检测限(2.5μmoL/L),回收率为99.45%~100.20%。
A new voltammetry for the rapid determination of sulfamethoxazole(SMX)is established by using molecularly imprinted g-C_(3)N_(4)(MIP-g-C_(3)N_(4))modified glassy carbon electrode(GCE).The prepared MIP-g-C_(3)N_(4) electrode material is characterized by means of SEM,XRD and FT-IR.The effect of pH value of buffer solution on the current response is investigated to determine the optimal response conditions.The experimental results show that when the pH value is 6,the current response is the strongest.In addition,the electrochemical performances of sulfamethoxazole on bare GCE,g-C_(3)N_(4)/GCE and molecularly imprinted g-C_(3)N_(4)/GCE electrode are comparatively investigated by cyclic voltammetry.The results show that the combination of g-C_(3)N_(4) and molecularly imprinted material can significantly improve the sensitivity of modified electrode to the determination of sul-famethoxazole.The sensor has a wide linear range(0.5~103.7μmol/L)and a lower detection limit(2.5μmol/L).Moreover,the recovery rate is 99.45%~100.20%.
作者
王堤
武天恒
刘蕊
郎丹梅
潘陆
WANG Di;WU Tianheng;LIU Rui;LANG Dan-mei;PAN Lu(College of Pharmacy(Center for Pharmaceutical Engineering Technology),Harbin University of Commerce,Harbin 150076,China)
出处
《化学与粘合》
CAS
2023年第3期270-274,共5页
Chemistry and Adhesion
基金
黑龙江省自然基金联合引导项目(编号:.LH2022B011)
大学生创新创业训练计划项目(编号:.202210240010)。
