| 硅胶G基纳米钛酸锶钡吸附富集-火焰原子吸收法对水中Pb2+的测定 |
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| 引用本文： | 张东,张俭,关欣,张文杰.硅胶G基纳米钛酸锶钡吸附富集-火焰原子吸收法对水中Pb2+的测定[J].离子交换与吸附,2009,25(4). |
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| 作者姓名： | 张东 张俭 关欣 张文杰 |
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| 作者单位： | 沈阳理工大学环境与化学工程学院,沈阳,110168;吉林化工学院化学与制药工程学院,吉林,132022 |
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| 摘 要： | 采用溶胶-凝胶法制备了硅胶G基纳米钛酸锶钡,并且用X射线衍射(XRD)、扫描电镜(SEM)和傅立叶变换红外光谱(FTIR)进行了表征.系统地研究了该物质对水中铅的吸附性能.提出了硅胶G负载纳米钛酸锶钡分离富集,FAAS法测定水中痕量铅的新方法.结果表明,纳米钛酸锶钡能够负载于硅胶G表面,制成蚕茧状颗粒吸附材料.在pH值为4～6时,该吸附剂对水中的铅离子具有很强的吸附能力,静态吸附容量达到86.28m/g.吸附在硅胶G负载纳米钛酸锶钡上的铅离子可用1mol/L的硝酸完全洗脱下来,经硅胶G负载纳米钛酸锶钡富集10倍后,方法检出限为7.4μg/L.用于河水和自来水中痕量铅的测定,结果满意.
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| 关 键 词： | 硅胶G基纳米钛酸锶钡 富集 铅 河水 自来水 火焰原子吸收光谱法 |
DETERMINATION OF TRACE LEAD ION IN WATER BY FAAS AFTER PRECONCENTRATION BY THE NANO-BARIUM-STRONTIUM TITANATE IMMOBILIZED ON SILICA GEL G |
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| ZHANG Dong,ZHANG Jian,GUAN Xin,ZHANG Wenjie.DETERMINATION OF TRACE LEAD ION IN WATER BY FAAS AFTER PRECONCENTRATION BY THE NANO-BARIUM-STRONTIUM TITANATE IMMOBILIZED ON SILICA GEL G[J].Ion Exchange and Adsorption,2009,25(4). |
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| Authors: | ZHANG Dong ZHANG Jian GUAN Xin ZHANG Wenjie |
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| Institution: | ZHANG Dong1 ZHANG Jian2 GUAN Xin1 ZHANG Wenjie1 1. School of Environmental , Chemical Engineering,Shenyang Ligong University,Shenyang 110168,China 2. School of Chemical , Pharmaceutical Engineering Jilin Institute of Chemical Technology,Jilin 132022,China |
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| Abstract: | Nanometer barium-strontium titanate immobilized on silica gel G was successfully prepared,and characterized by using XRD,SEM and FT-IR. The adsorptive potential of immobilized nanometer barium-strontium titanate for lead ion was investigated. A new method for determination of trace lead ion in water based on this immobilized nanometer barium-strontium titanate preconcentration and FAAS determination was proposed. The results showed that the nanometer barium-strontium titanate was immobilized on the silica g... |
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| Keywords: | Nanometer barium-strontium titanate immobilized on silica gel G Preconcentration Lead River water Tap water FAAS |
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