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Citation: LI Xing-Yang, WEI Xiao-Ling, GONG Qi. Filter Coated with Phenyl Fluorone for Enrichment and Determination of Trace Germanium by GFAAS[J]. Chinese Journal of Applied Chemistry, ;2008, 25(4): 437-440. shu

Filter Coated with Phenyl Fluorone for Enrichment and Determination of Trace Germanium by GFAAS

1.
a Department of Biochemistry, Anhui College of Technology and Science, Wuhu 241000;
2.
b College of Chemistry and Chemical Engineering, Guangxi University, Nanning

Corresponding author: LI Xing-Yang,
Received Date: 7 April 2007
Available Online: 23 August 2007
Fund Project: 安徽工程科技学院青年科研基金(2005YQ019) (2005YQ019)

Filter fiber coated with phenyl fluorone was utilized to pre-concentrate trace amount of Germanium for determination by GFAAS.The conditions of measurement,enrichment and desorption were explored.The fibers was soaked in the pregnant solution containing trace amount of Germanium (pH=2) and stirred for 60 min at 60℃,and then the fibers were filtered and washed.A clear solution was attained after the fibers were treated with 5.0 mL of HNO₃ (98%) in a microwave digester.With pyrolytic graphite tube coated with tungsten and lanthanum as a matrix modifier,Germanium in the solution was measured by GFAAS,resulting in satisfactory results.The detection limit was 0.20 μg/L,the recovery was in the range of 95.2%~104%,and the RSD was between 2.3%~11.8%.Germanium contents in zinc headings and national standard reference samples GSS-6 and GSR-5 were measured with the established method,with good agreements with the recommended values.
- phenyl fluorine,
- coated fiber,
- enrichment,
- GFAAS,
- germanium
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