摘要
金属配合物在电极上的吸附和反应机制与简单物质的吸附反应机制是不一样的,因此其理论处理方法也不同。前文提出了线性变位极谱配位吸附可逆波理论,本文推导了不可逆电极反应过程配位吸附波(CAEM过程)常规和导数极谱方程式,并以Cu^(2+)-PAR-NaOH-丙三醇体系进行了验证,理论与实验结果相符合。
The equations of adsorptive-complex irreversible waves in linearly changing poten-
tial polarography are described.
For the reaction system:
the following equations of normal and derivative polarography were obtained.
where
and n is the number of electrons involved in the reduction of complex [ML_xQ_v…]_(ads), α is
transfer coefficient, D_o is the diffusion coefficient of ML_xQ_v…, c_M is the bulk concentration
of metalion M, v is the rate of potential chang and other symbols have tho significance
commonly accorded them in electroanalytical chemistry.
Tests were carried out with JP-2 type oscillopolarograph to study the i-E curves on
dropping mercury electrode, the observed values of Cu(Ⅱ) in 0.12 mol·dm^(-3) NaOH,
2×10^(-3)mol·dm^(-3) PAR, 0.5% glycerol solution agreed with the theoretical.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
1989年第1期78-83,共6页
Acta Chimica Sinica
基金
国家自然科学基金
