摘要
重金属污染目前已非常严重,因此识别检测重金属离子显得尤为重要。合成了基于藏红T(ST)与2-羟基-1-萘甲醛(N)的席夫碱配体ST-N,该配体在水溶液中对Hg(Ⅱ)、Pb(Ⅱ)、Ca(Ⅱ)、Fe(Ⅱ)、Fe(Ⅲ)、Co(Ⅱ)等18种常见金属离子中的Fe(Ⅲ)有很好的专一选择性识别,其最低检测限为1 mg/L,符合《GB/T14848-2017地下水质量标准》中铁Ⅳ类检测标准≤2. 0 mg/L,且检测Fe(Ⅲ)的RSD≤1. 17%,加标回收率在95. 7%~103%之间。
Heavy metal pollution is now very serious,so it is particularly important to identify and detect heavy metal ions.The ligand ST-N was synthesized by the reaction of safranine T( ST) with 2-hydroxy-1-naphthalaldehyde(N).The ligand has a good selective recognition for Fe(Ⅲ) in 18 common metal ions such as Hg(Ⅱ),Pb(Ⅱ),Ca(Ⅱ),Fe(Ⅱ),Fe(Ⅲ),Co(Ⅱ) in aqueous solution.The detection limit is 1 mg/L,which meets the detection standard of iron Fe(Ⅲ) in groundwater quality standard( GB/T 14848-2017).The detection limit is less than 2. 0 mg/L.The RSD of Fe(Ⅲ) was less than 1. 17% and the recovery was between 95. 7% and 103%.
作者
付晓伟
牟涛
吴晓
FU Xiao-wei;MU Tao;WU Xiao(Department of Chemical and Environmental Engineering, Yingkou Institute of Technology, Yingkou 115014, China)
出处
《化学试剂》
CAS
北大核心
2019年第7期734-737,共4页
Chemical Reagents
基金
辽宁省自然科学基金资助项目(L20180550492)
营口理工学院院级科研基金项目(QNL201803、QNL201806)
