Pre-concentration Capability for Trace Heavy Metal Ions with Manual．controlled Injection Porous Nano-barium-strontium Titanate Microspheres Enricher
The micro-column packed with porous nano-barium-strontinm titanate microspheres，joining with injector,a new manual-controlled injection porous nano-bariuIm- strontium titanate microspheres enricher (PBSTME) was prepared．The enrichment capability of the PBSTME for the heavy metal ions, such as zinc,nickel copper, manganes cobalt and silver was investigated The results showed that all the heavy metals studied could be quantitatively retained by the PBSTM E in the pH range of 5-8, and then eluted completely with 2 mol·L-1 HNO3.The detection limits of this method for zinc，nickel,copper,manganese, cobalt and silver jons were 0.028 μg·L-1，0.2μg·L-1， 0.031 μg·L-1, 0.022 μg·L-1,O.057μg·L-1 and 0.039 μg·L-1 with an enrichment factor of 50,respectively．A new method has been developed for the determination of trace heavy metal ions based on pre-concentration with a PBSTME prior to their determination by flame atomic absorption spectrometry．The method has been applied to the simultaneous determination of trace amounts of zinc，nickel， copper’manganese．cobalt and silver ions in water sample with satisfactory results．
porous nano-barium-strontiunt titante microspheres manual-controlled injection enricher pre-concentration capabifity heavymetal ion flame atomic absorption spectrometry
Dong Zhang
School of Environmental and Chemical Engineering Shenyang Li-gong University Shenyang 110159 PR China
国际会议
海口
英文
130-132
2011-02-22（万方平台首次上网日期，不代表论文的发表时间）