论文部分内容阅读
本文提出痕量钴的在线流动注射离子交换预浓集火焰原子吸收测定方法,并将其应用于天然水的分析。在每小时60样次速度下检出限为0.2μg/L(30)。对40μg/L含量水平钴测定的相对标准偏差为1.7％(n=11)。文中讨论了CPG-8HQ离子交换剂,Chelex-100螯合树脂以及501螯合树脂浓集钴的效率,抗干扰能力以及对天然水样的回收率和条件参数的优选。
In this paper, an online method for the determination of trace cobalt by flow injection ion exchange pre-concentration flame atomic absorption spectrometry was proposed and applied to the analysis of natural water. The limit of detection was 0.2 μg / L (30) at a speed of 60 samples per hour. The relative standard deviation of the determination of 40 μg / L level cobalt was 1.7% (n = 11). In this paper, the efficiency, anti-interference ability of CPG-8HQ ion exchangers, Chelex-100 chelating resin and 501 chelating resin-concentrating cobalt are discussed, as well as the optimization of natural water sample recovery and condition parameters.