CAJ | 학술논문

采用线性扫描伏安法和循环伏安法研究了芦丁在亲水性离子液体1-丁基-3-甲基四氟硼酸盐([bmim]BF_4)中的电化学行为, 讨论了扫描速度、富集时间及温度等因素对其电化学行为的影响. 结果表明, 芦丁在[bmim]BF_4中的电极过程是一个受吸附控制的准可逆过程, 电子转移数为2, 标准速率常数k_s=0.126 s~(-1). 同时, 分别考察了水及乙醇对芦丁氧化还原特性的影响, 结果发现, 随着水或乙醇含量的增加, 芦丁的峰电位负移, 峰电流增加, 且水的影响比乙醇的影响明显. 在离子液体-水体系中, 芦丁的峰电流与浓度在4.0×10~(-5)～1.4×10~(-4) mol/L范围内呈良好的线性关系, 检出限为1.0×10~(-5) mol/L, 有望用于芦丁含量的分析测定.
채용선성소묘복안법화순배복안법연구료호정재친수성리자액체1-정기-3-갑기사불붕산염([bmim]BF_4)중적전화학행위, 토론료소묘속도、 부집시간급온도등인소대기전화학행위적영향. 결과표명, 호정재[bmim]BF_4중적전겁과정시일개수흡부공제적준가역과정, 전자전이수위2, 표준속솔상수k_s=0.126 s~(-1). 동시, 분별고찰료수급을순대호정양화환원특성적영향, 결과발현, 수착수혹을순함량적증가, 호정적봉전위부이, 봉전류증가, 차수적영향비을순적영향명현. 재리자액체-수체계중, 호정적봉전류여농도재4.0×10~(-5)～1.4×10~(-4) mol/L범위내정량호적선성관계, 검출한위1.0×10~(-5) mol/L, 유망용우호정함량적분석측정.
In the medium hydrophilic ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate ( [bmim] BF_4) , the electrochemical behaviors of rutin( Rt) were studied by linear sweep voltammetry and cyclic voltammetry. The influences of scan rate, accumulation time and temperature on the electrochemical characteristics of Rt were also discussed. The experimental results indicated that the electrode process of Rt was a quasi-reversible process with absorption, and the electron transfer number was 2. The standard rate constant k_s of Rt was 0.126 s~(-1) in [bmim] BF_4. The effects of water or ethanol on the electrochemical behavior of Rt were investigated systematically. With the increasing of amount of water or ethanol, the peak potential of Rt shifted negatively and the peak current increased, and water affected the system more obviously than ethanol. In the [bmim]BF_4-H_2O system, a linear dependence of oxidation current on Rt concentration was obtained in the range of 4.0×10~(-5)-1.4×10~(-4) mol/L, the detection limit was 1.0×10~(-5) mol/L. This method could be applied to the determination of rutin content.