石墨稀／泡沫镍复合电极的制备及其测定汞离子的应用  

The manufacture of graphene/nickel foam combined electrode and its application in the determination of mercury ion

作　　者：戴虹[1] 焦晨旭[1] 侯国忠[1] 王磊[1] 

机构地区：[1]中北大学理学院,山西太原030051

出　　处：《化工中间体》2015年第6期90-91,共2页

摘　　要：以石墨稀／泡沫镍复合电极，采用循环伏安法，用于重金属离子汞的检测，研究了其电化学眭能，并优化实验条件。当在pH=10．20的NH3刊H4Cl缓冲溶液中，最佳扫描速率为100mV·s-1时，为最佳实验条件。测试图中在0．41V左右处出现明显的氧化峰，Hg2＋浓度与氧化峰电流在5．0×10-8mol·L-1～3．0×10-7mol·L-1范围内有良好线性关系，线性方程为Ipa=5．336＋1．212c（lpa为峰电流，单位mA；C为Hg2＋浓度，单位μmol·L-1），线附目关系数和检出限分别为0．9921和2．9×10-8mol·L-1。Used graphene/nickel foam combined electrode, adopted CV in the determination of heavy metal ion mercury, researched its electrochemical performances, and optimized the experimental conditions. When the pH of NH3-NH4CI buffered solution was 10.20, the optimal scan rate was 100 mV·s-1, it was the optional experimental conditions. There was a obvious oxidation peak around the 0.41V in the test pattern, Hg2＋ concentration had good linear relation with oxidation peak current in the range of 5.0×10-8 mol.L-1-3.0×10-7 mol.L-1, the linear equation was Ipa =5.336＋1.212c（Ipa is peak current, unit is mA, c is Hg2＋ concentration, unit is μmol.L-1）, the linearly dependent coefficient and detection limit were 0.9921 and 2.9×10-8 mol.L-1.

关 键 词：石墨稀/泡沫镍复合电极 循环伏安法 Hg(Ⅱ) 

分 类 号：O657.1[理学—分析化学]