Karlson U, Frankenberger W
J Chromatogr. 1986 Oct 10;368(1):153-61. doi: 10.1016/s0021-9673(00)91056-2.
Chromatographic parameters were optimized to determine selenate (SeO4(2-)) by single-column ion chromatography with the simultaneous detection of Cl-, NO2-, NO3- and SO4(2-). Separation was conducted on a low-capacity anion-exchange column, and anions were quantified by conductimetric detection. The eluent stream consisted of 4 mM phthalic acid adjusted to pH 4.6 with sodium borate. Accurate measurement of trace amounts of SeO4(2-) was evident in the presence of high background levels of other ions including Cl-, NO-3 and up to 40 mg l-1 SO4(2-). Resolution of SeO4(2-) and SO2-4 was demonstrated up to 80 mg l-1 SO4(2-). The detection limit of SeO4(2-) was 18 micrograms l-1 with a relative standard deviation of 1.46%.
优化了色谱参数，采用单柱离子色谱法同时测定硒酸盐（SeO4(2-)）以及Cl-、NO2-、NO3-和SO4(2-)。在低容量阴离子交换柱上进行分离，通过电导检测对阴离子进行定量。洗脱液由4 mM邻苯二甲酸组成，用硼酸钠调节至pH 4.6。在存在包括Cl-、NO3-和高达40 mg l-1 SO4(2-)等其他离子的高背景水平下，能够准确测量痕量的SeO4(2-)。在高达80 mg l-1 SO4(2-)的情况下，证明了SeO4(2-)和SO4(2-)的分离度。SeO4(2-)的检测限为18微克 l-1，相对标准偏差为1.46%。
