衡阳师范学院学报
衡暘師範學院學報
형양사범학원학보
journal of Hengyang Normal University
2011年
6期
70~73
,共null页
匡云飞 邹建陵 李玉明 许金生 冯泳兰 秦婕 谢选青 汤亚妮 郑强 谭旭
劻雲飛 鄒建陵 李玉明 許金生 馮泳蘭 秦婕 謝選青 湯亞妮 鄭彊 譚旭
광운비 추건릉 리옥명 허금생 풍영란 진첩 사선청 탕아니 정강 담욱
聚噻吩 纳米二氧化钛 对苯二酚 间苯二酚 线性扫描溶出伏安法
聚噻吩 納米二氧化鈦 對苯二酚 間苯二酚 線性掃描溶齣伏安法
취새분 납미이양화태 대분이분 간분이분 선성소묘용출복안법
polythiophene; Nano Titanium dioxide; hydroquinone; resorcinol ; linear sweep stripping voltammetry
该文利用循环伏安法(CV)和线性扫描溶出伏安法(LSSV)研究了对苯二酚(HQ)和间苯二酚(RS)在聚噻吩/纳米二氧化钛修饰玻碳电极(PTh/NTiO。/GCE)上的电化学行为。该修饰电极作为两种苯二酚传感器表现出极好的灵敏度和选择性。在0.2mol/L柠檬酸一磷酸氢二钠缓冲溶液(pH4.6),RS和HQ的氧化峰电位相距508mV,且在PTh/NTiO2/GCE上的峰比在裸GCE上的高出6.5倍。在最佳条件下,PTh/NTiO2/GCE对HQ和RS在1.0×10^-7~8.0×10^-6范围内都有较好的线性关系,混合物中的检出限(S/N一3)分别为3.3×10mol/L和3.7×10^-8mol/L。通过计算得出了一些动力学参数如电子转移数(n),质子转移数(m)。该法被用来同时测定废水中的RS和HQ结果满意。
該文利用循環伏安法(CV)和線性掃描溶齣伏安法(LSSV)研究瞭對苯二酚(HQ)和間苯二酚(RS)在聚噻吩/納米二氧化鈦脩飾玻碳電極(PTh/NTiO。/GCE)上的電化學行為。該脩飾電極作為兩種苯二酚傳感器錶現齣極好的靈敏度和選擇性。在0.2mol/L檸檬痠一燐痠氫二鈉緩遲溶液(pH4.6),RS和HQ的氧化峰電位相距508mV,且在PTh/NTiO2/GCE上的峰比在裸GCE上的高齣6.5倍。在最佳條件下,PTh/NTiO2/GCE對HQ和RS在1.0×10^-7~8.0×10^-6範圍內都有較好的線性關繫,混閤物中的檢齣限(S/N一3)分彆為3.3×10mol/L和3.7×10^-8mol/L。通過計算得齣瞭一些動力學參數如電子轉移數(n),質子轉移數(m)。該法被用來同時測定廢水中的RS和HQ結果滿意。
해문이용순배복안법(CV)화선성소묘용출복안법(LSSV)연구료대분이분(HQ)화간분이분(RS)재취새분/납미이양화태수식파탄전겁(PTh/NTiO。/GCE)상적전화학행위。해수식전겁작위량충분이분전감기표현출겁호적령민도화선택성。재0.2mol/L저몽산일린산경이납완충용액(pH4.6),RS화HQ적양화봉전위상거508mV,차재PTh/NTiO2/GCE상적봉비재라GCE상적고출6.5배。재최가조건하,PTh/NTiO2/GCE대HQ화RS재1.0×10^-7~8.0×10^-6범위내도유교호적선성관계,혼합물중적검출한(S/N일3)분별위3.3×10mol/L화3.7×10^-8mol/L。통과계산득출료일사동역학삼수여전자전이수(n),질자전이수(m)。해법피용래동시측정폐수중적RS화HQ결과만의。
In this paper, the electrochemical behavior of hydroquinone(HQ) and resorcinol(RS) on the polythiophene / Nano Ti- tanium dioxide modified glassy carbon electrode (PTh/NTiO2/GCE) were investigated by cyclic voltammetry and linear sweep stripping vohammetry(LSSV). The modified electrode showed excellent sensitivity and selectivity properties for the two di- hydroxybenzene isomers. 0.2 mol/L citric acid-disodium hydrogen phosphate buffer solution(pH 4.6), the oxidation peak po- tential difference between HQ and RS was 508 mV, and the peaks on the PTh/NTiO2/GCE were 6.5 times as high asthe ones on bare glass carbon electrode. Under optimized conditions, the PTh/NTiOz/GCE showed a good linear relationship in the range of 1.0 ×10^-7 ~8.0 ×10^-- 6 mol/L for HQ or for RS, with the detection limits 3.3 ×10^-8 mol/L for HQ and 3.7 ×10^-8 mol/L for RS (S/N =3) in mixture, respectively. Some kinetic parameters, such as the electron transfer number (n), and proton transfer number (m), were calculated. The proposed method was applied to simultaneous determine HQ and RS in real waste water samples with satisfactory results.