Simultaneously determination of bisphenol A and uric acid by zinc/aluminum-layered double hydroxide-2-(2,4- dichlorophenoxy) propionate paste electrode
Simultaneously determination of bisphenol A and uric acid by zinc/aluminum-layered double hydroxide-2-(2,4- dichlorophenoxy) propionate paste electrode
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DOI：
10.20964/2019.08.75
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发表时间：
2019-08
影响因子：
1.5
通讯作者：
Nurul Syahida Mat Rais
中科院分区：
文献类型：
--
作者：
Nurul Syahida Mat Rais
制备了一种新型锌/铝-层状双氢氧化物-2-（2，4-二氯苯氧基）丙酸酯（Zn/Al-LDH-DPPA）纳米复合物修饰多壁碳纳米管（MWCNT）糊电极，用于同时测定尿酸和双酚A。采用扫描电镜和透射电镜对Zn/Al-LDH-DPPA/MWCNT的形貌进行了表征，采用电化学阻抗谱和方波伏安法对电极-电解质界面特性进行了研究。该电极对尿酸和双酚A的线性范围分别为5.0 × 10 - 6 M ~ 7.0 × 10 - 4 M（R2 = 0.9980和R2 = 0.9960），检出限分别为7.95 × 10 - 7 M和8.71 × 10 - 7 M（S/N=3）。该传感器重现性好、稳定性高、灵敏度高、抗干扰能力强。Zn/Al-LDH-DPPA/MWCNT电极适用于湖泊、河流和尿样中UA和BPA的同时测定，回收率良好。
A novel zinc/aluminium-layered double hydroxide-2-(2,4-dichlorophenoxy) propionate (Zn/Al-LDH-DPPA) nanocomposite to modify with multi-walled carbon nanotube (MWCNT) paste electrode for simultaneously determination of uric acid and bisphenol A. The Zn/Al-LDH-DPPA/MWCNT morphology was carried out by a scanning electron microscope and transmission electron microscope, electrode-electrolyte interface properties were examined by electrochemical impedance spectroscopy, and electrochemical responses thoroughly investigated by square-wave voltammetry. The electrode established linear plot for uric acid and bisphenol A from 5.0 x 10 —6 M to 7.0 x 10 —4 M (R 2 = 0.9980) and (R 2 = 0.9960) and the detection limits were 7.95 x 10 —7 M and 8.71 x 10 —7 M (S/N=3). The as-prepared sensor is reproducible, highly stable, sensitive as well as ascribed good anti-interference ability. The Zn/Al-LDH-DPPA/MWCNT electrode is applicable to evaluate simultaneously determination of UA and BPA in lake, river and, urine samples with good percentage recovery.