氧化锆微球担体-8-羟基喹啉鳌合固定相的合成及其在痕量金属分析中的应用  

Synthesis of 8-hydroxyquinoline bonded ZrO_2 composition microspheres and its application by flow injection-indutively coupled plasma-mass spectrometry on the detection of trace metals lead in sea water

作　　者：宋秘钊[1] 张慧君[1] 王征[2] Frank S.CLee 王小如[2] 

机构地区：[1]齐齐哈尔大学轻纺学院,黑龙江齐齐哈尔161006 [2]国家海洋局第一研究所现代分析技术及中药标准化重点实验室,山东青岛266061

出　　处：《化学研究与应用》2007年第9期979-986,共8页Chemical Research and Application

基　　金：国家863计划(2003AA635180)项目资助;青岛科技将才计划基金(04-3-J.J-11)项目资助;黑龙江省教育厅项目(11511433)资助;国家海洋局青年基金项目(2006601)资助

摘　　要：以氧化锆微球为担体,通过mannich反应得到在氧化锆微球上键合8-羟基喹啉的痕量金属富集分离固定相,并对该固定相的键合金属离子能力进行了研究。以合成的氧化锆微球键合8-羟基喹啉金属鳌合固定相用作微柱流动注射(FIA)在线分离、富集和电感耦合等离子体质谱(ICP-MS)分析流程中的固定相,对大洋海水中的痕量铅和镉进行了在线分析,得到了较满意的结果。A new method for the synthesis of 8-hydroxyquinoline（8-HQ） bonded ZrO2 Composition Microspheres（ZrHQ） for metal chelation applications has been developed by Mannich reaction.The dynamic binding capacities of the ZrHQ towards copper（Ⅱ） has been measured by inductively coupled plasma mass spectrometry（ICP-MS）,and the result is 330μmol/g for ZrHQ,which can achieve the desire for pre-concentration of trace metals of seawater and estuary water.The ZrHQ synthesized has been used for measuring trace lead in seawater and estuary water samples using on-line flow injection（FIA）-ICP-MS.The detection limit of the method is about 10ng/L,and the relative standard deviation（s（subscript r）） is 9.1%.Using CASS-4 standard seawater samples spiked with Pb standard,the recovery of Pb from the process is about 140%.The high recovery observed is likely due to the contamination of Pb in the high purity nitric cid used in the experiments.

关 键 词：金属离子亲和色谱 氧化锆微球担体 8-羟基喹啉 电感耦合等离子体质谱 流动注射 

分 类 号：O657.7[理学—分析化学]