Independent analysis of anions and cations using indirect photometric chromatography
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0186037A2
公开(公告)日:1986-07-02
An improved technique and apparatus for the indepen-. dent measurement of anions and cations in solution, wherein the sample ions are chromatographically displaced in a plurality of ion exchange columns by an eluting ion which is or is made light-absorbing and wherein the sample ions are detectable from decrements in absorbance of the eluting ions as revealed by photometric monitoring; and the sample ions, cations and anions, are further detected independently by means for monitoring eluting anion and cation absorbance differences calibrated according to characteristic absorbance ratios of the selected eluting ion species at a plurality of wavelengths.
一种用于独立测量溶液中阴离子和阳离子的改进技术和装置。其中,样品离子在多个离子交换柱中被洗脱离子色谱转移,洗脱离子具有或被洗脱后具有光吸收性,样品离子可通过光度监测显示的洗脱离子吸光度的下降进行检测;通过监测洗脱阴离子和阳离子的吸光度差异,根据所选洗脱离子种类在多个波长下的特征吸光度比进行校准,进一步独立检测样品离子、阳离子和阴离子。