锡(Ⅳ)-邻苯三酚红-钒(Ⅳ)-十二烷基磺酸钠体系极谱吸附催化波研究  

Polarographic Adsorptive Catalytic Wave of Tin( Ⅳ)-Pyrogallol Red-Vanadium ( Ⅳ )-Sodium Dodecyl Sulfonate System

作　　者：龙晖[1] 侯小凤[1] 李益恒[1] 

机构地区：[1]湘潭大学化学系,湘潭411105

出　　处：《分析化学》1999年第3期316-319,共4页Chinese Journal of Analytical Chemistry

摘　　要：在0.1mol/L氯乙酸盐缓冲溶液(pH2.4)中,锡(Ⅳ)-邻苯三酚红(PR)-钒(Ⅳ)-十二烷基磷酸钠(SDS)体系产生一灵敏的吸附平行催化波,峰电位为-0.53V(vs.SCE),一次导数峰高与锡浓度在6.7×10^(-10)～10×10^(-6)mol/L范围内呈良好的线性关系,检测限为4×10^(-10)mol/L.方法已成功地应用于罐装食品中微量锡的测定,结果满意.In 0.1 mol/L chloroacetate buffer solution(pH 2.4), Sn( IV )-pyrogallol red-V( IV )-sodium dodecyl sulfonate system produces a sensitive polarographic adsorptive catalytic wave with peak potential at - 0.53 V( vs . SCE) . The first-order derivative peak height is proportional to the concentration of Sn (IV) over the range from 6.7×10-10 mol/L to l.0× 10-6 mol/L. The detection limit for Sn(IV) is as low as 4 * 10-10 mol/L. The method has been applied to the determination of Sn( IV) in tinned food with satisfactory results.

关 键 词：锡 邻苯三酚红 极谱吸附催化波 测定 SDS 

分 类 号：O614.432[理学—无机化学]