WO_(3)/乙炔黑修饰电极检测一滴香中乙基麦芽酚  

WO_(3)/Acetylene Black Modified Electrode for Detecting Ethyl Maltol in A Fragrance Drop

作　　者：段禹 孔大彬 王德响 王洪 李胜男 胡民康 张津铭 杜海军[1,2] DUAN Yu;KONG Da-bin;WANG De-xiang;WANG Hong;LI Sheng-nan;HU Min-kang;ZHANG Jin-ming;DU Hai-jun*(School of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China;Laboratory of Xinjiang Native Medicinal and Edible Plant Resources Chemistry,Kashi University,Kashi 844000,China)

机构地区：[1]贵州民族大学化学工程学院,贵州贵阳550025 [2]喀什大学新疆特色药食用植物资源化学实验室,新疆喀什844000

出　　处：《化学试剂》2023年第9期116-121,共6页Chemical Reagents

基　　金：国家自然科学基金资助项目(82060714);贵州高等学校创新团队项目([2022]013);新疆特色药食用植物资源化学实验室开放项目(KSUZDSYS202104)。

摘　　要：采用简单的低温化学合成法和超声处理成功制备了三氧化钨/乙炔黑复合材料(WO_(3)/AB),由于AB的加入,提高了WO_(3)的导电性和分散性,增强了对乙基麦芽酚(Ethyl maltol,EMA)氧化的催化性能,通过滴涂的方式将WO_(3)/AB复合材料修饰在玻碳电极(GCE)上,构建WO_(3)/AB/GCE传感器用于EMA的灵敏检测。所制备WO_(3)/AB传感器的浓度线性范围为1~200μmol/L,检测限为0.18μmol/L。此外,WO_(3)/AB传感器在实际样品一滴香中EMA检测时具有良好的回收率(96.3%~108.4%),相对标准偏差<5%。以上结果表明该WO_(3)/AB传感器具有较强的重复性和高稳定性,在灵敏检测食品中的调味添加剂方面具有巨大潜力。A tungsten trioxide/acetylene black composite(WO_(3)/AB)was successfully prepared by a simple low-temperature chemical synthesis and ultrasonic treatment.The addition of AB improved the electrical conductivity and dispersion of WO_(3)and enhanced the catalytic performance for ethyl maltol(EMA)oxidation,and the WO_(3)/AB composite was modified on a glassy carbon electrode(GCE)by drop coating to construct a WO_(3)/AB/GCE sensor for the sensitive detection of EMA.The linear range of the prepared WO_(3)/AB sensor was from 1 to 200μmol/L,and the detection limit was 0.18μmol/L.In addition,the WO_(3)/AB sensor had good recoveries(96.3%~108.4%)with the relative standard deviations less than 5%for the detection of EMA in a drop of actual sample.The above results indicate that this WO_(3)/AB sensor has strong reproducibility and high stability,and has great potential for sensitive detection of flavor additives in foods.

关 键 词：乙基麦芽酚 电化学传感器 三氧化钨 乙炔黑 一滴香 

分 类 号：O657.1[理学—分析化学]