新的化学发光体系测定铜

A New Chemiluminescence System for Determination of Copper

中文关键词:  配合物  化学发光分析  鲁米诺  铜  水杨酸

英文关键词:complex  chemiluminscenct analysis  luminol  copper  salicylic acid

中文摘要:

      研究了水杨酸(R)与Cu(Ⅱ)配合物(CuR₂^2-)催化H₂O₂氧化鲁米诺产生化学发光反应,最低检出限为6.6×10^-11g/mL,工作曲线线性范围为1×10^-10～1×10^-7g/mL,在检测0.1μgCu(Ⅱ)的浓度时的相对标准偏差(RSD)为2.7%.铜配合物化学发光法检测病毒灵片剂(盐酸吗林胍片)中微量铜时快速地得到准确的结果.

英文摘要:

      A new complex cheminescence, i.e. Luminol H₂O₂ catalyzed by CuR₂^2- complex was reported. The linear range for the determination of Cu(Ⅱ) is 1×10^-10～1×10^-7g/mL. The detection limit is 6.6×10^-11 g/mL. The relative standard deviation (n=5) for an analytical concentration of 4×10^-8 g/mL is 2.7%. The tolerable capacity of interserence ion is relatively large.The precision, accuracy and selectivity of the method are very good.The mothod has been used to determine trace copper with satisactory results.