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鲁米诺化学发光法同注流技术与离子色谱法结合,测定钴(Ⅱ)已达到pg/ml的水平。在离子色谱中,用氯化钙作淋洗液将钴(Ⅱ)同干扰物分开。浓度为30pg/ml的钴(Ⅱ)的十次重复测定的相对标准偏差为3.8%。本实验使用带有100μl环式进样器的HLC-803E离子色谱仪,用阳离子分离柱,柱后连接K-1000注流分析仪。在分析系统中,鲁米诺试剂首先与H_2O_2溶剂混合,随后与分离柱的流出液混匀。一并进入石英流体管,由F-1000无波长分辩力的荧光分光光度仪进行测
Luminol chemiluminescence with the same injection technique and ion chromatography, cobalt (Ⅱ) has been determined pg / ml level. In ion chromatography, calcium (II) is separated from interference by calcium chloride as an eluent. The relative standard deviation of 10 replicates of cobalt (II) at a concentration of 30 pg / ml was 3.8%. In this experiment, a HLC-803E ion chromatograph with a 100 μl loop sampler was used. The cation separation column was used. The column was connected to a K-1000 flow injection analyzer. In the analytical system, the luminol reagent is first mixed with H 2 O 2 solvent and then with the effluent of the separation column. Enter the quartz fluid tube together with the F-1000 fluorescence-free spectrophotometer