School of Chemistry and Environmental Engineering, Jinan University, Jinan 250022, People's Republic of China; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, People's Republic of China.
Talanta. 2003 Feb 6;59(2):253-9. doi: 10.1016/s0039-9140(02)00498-8.
A new catalytic kinetic spectrophotometric method has been developed for the determination of trace amount of manganese (II) in nonionic microemulsion medium. The method is based on the catalytic effect of manganese (II) on the oxidation of dahlia violet by potassium periodate with nitrilotriacetic acid as an activitor in the presence of nonionic microemulsion. Under the optimum conditions, the calibration graph is linear in the range of 0.0004-0.0056 mug ml(-1) of manganese (II) at 580 nm. The detection limit achieved is 3.75x10(-5) mug ml(-1). Manganese (II) in foodstuff samples was determined with satisfactory results.
已开发出一种新的催化动力学分光光度法，用于测定非离子微乳液介质中痕量锰(II)。该方法基于锰(II)在存在非离子微乳液时对高碘酸钾氧化天竺葵紫与氮三乙酸的催化作用。在最佳条件下，在 580nm 处，锰(II)在 0.0004-0.0056μgml(-1)范围内的校准曲线呈线性。所达到的检测限为 3.75x10(-5)μgml(-1)。用该方法测定食品样品中的锰(II)，结果令人满意。
