摘要
以多孔玻璃纤维滤膜基钛酸锶钡（BBST）为吸附材料,制备了手控注射式富集器;考察了该富集器对水中Zn2＋的吸附富集性能.结果表明：当介质的pH值为3-7时,多孔玻璃纤维滤膜基钛酸锶钡对水中的Zn2＋具有很强吸附能力,其静态吸附容量为24.30 mg/g;制备的富集器可实现对Zn2＋的动态吸附,被吸附的Zn2＋可用2.0%的EDTA溶液动态洗脱回收,其浓集因子可达500.提出了手控注射式钛酸锶钡富集器富集,火焰原子吸收光谱法测定水中痕量Zn2＋的新方法.方法检出限为0.09μg/L.应用于一次蒸馏水和纯净水中痕量Zn2＋的富集,用火焰原子吸收法测定,回收率为93.0%-102.0%.
By using porous barium-strontium titanate based on glass fiber filter（BBST） as sorbent,a new manual-controlled injection separator was prepared,and the concentrative potential of the manual-controlled injection enricher for zinc ion was investigated.The results showed that the porous BBST had adsorption capacity towards the zinc ion when the pH value ranges between 3-7.The adsorption capacity of porous BBST for zinc ion was found to be 24.30 mg·g-1.Packed with porous BBST,the micro-column had been joined together injector.The manual-controlled injection separator could adsorb for zinc ion in flowing.The zinc iron could be completely eluted by using 2.0% EDTA.The zinc iron was concentrated successfully,and the pre-concentration factor was 500.A new method for determination of trace zinc ion in water based on the manual-controlled injection enricher and FAAS determination were proposed.The detection limit of this method for zinc was 0.09 μg·L-1.The method has been applied to the determination of trace zinc ion in distilled water and pure water,the recoveries were 93.0%-102.0%.
出处
《沈阳理工大学学报》
CAS
2010年第2期44-47,69,共5页
Journal of Shenyang Ligong University
关键词
钛酸锶钡
玻璃纤维滤膜
手控注射式富集器
富集
锌
火焰原子吸收光谱法
barium-strontium titanate
glass fiber filter
manual-controlled injection enricher
pre-concentration
zinc
flame atomic absorption spectrometry
