2,2′-Dihydroxyazobenzene derivatives as reagents for trace metal determination by ion-pair reversed-phase high-performance liquid chromatography with spectrophotometric detection

2,2′-Dihydroxyazobenzene derivatives as reagents for trace metal determination by ion-pair reversed-phase high-performance liquid chromatography with spectrophotometric detection
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2,2′-二羟基偶氮苯衍生物作为离子对反相高效液相色谱分光光度检测法测定痕量金属的试剂

DOI:
10.1039/an9901500133
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发表时间:
1990
期刊:
影响因子:
4.2
通讯作者:
T. Yotsuyanagi
T. Yotsuyanagi
中科院分区:
化学2区
文献类型:
--
作者:
H. Hoshino;Kouji Nakano;T. Yotsuyanagi

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本文研究了2,2 ′-二羟基偶氮苯及其5种取代类似物作为柱前螯合剂,用反相高效液相色谱(RP-HPLC)光度法测定痕量金属离子。七种金属离子,即,铝III,钴III,铜II,铁III,钼VI,VV和锌II,被检测为它们的偶氮螯合物在离子对RP模式。考察了各试剂的最佳显色条件,包括显色pH值、色谱柱、移动的相参数和检测波长。方法用于粉煤灰中铝和铁的测定。的动力学性质和形式的螯合物负责RP-HPLC对金属离子的选择性进行了讨论,在“动力学分化”与离子对RP分区现象。
2,2′-Dihydroxyazobenzene and five substituted analogues have been examined as pre-column chelating agents for the determination of trace metal ions by reversed-phase high-performance liquid chromatography (RP-HPLC) with spectrophotometric detection. Seven metal ions, viz., AlIII, CoIII, CuII, FeIII, MoVI, VV and ZnII, were detected as their azo chelates in the ion-pair RP mode. The optimum conditions, including pH for colour formation, column used, mobile phase parameters and detection wavelength, were investigated for each individual reagent. The method was applied to the determination of Al and Fe in coal fly ash samples. The kinetic nature and the forms of the chelates responsible for the selectivity of RP-HPLC towards metal ions are discussed in terms of “kinetic differentiation” together with ion-pair RP partition phenomena.
DOI: 10.1016/s0021-9673(01)94596-0
发表时间: 1987
影响因子: 4.1
作者:
M. Kanbayashi;H. Hoshino;T. Yotsuyanagi
通讯作者: M. Kanbayashi;H. Hoshino;T. Yotsuyanagi
DOI: --
发表时间: 2006
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