高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (12): 1865.

• 研究简报 • 上一篇    下一篇

蓝藻预富集-悬浮液进样GFAAS测定水中痕量银的研究

汤又文, 宋健怡, 莫胜钧   

  1. 华南师范大学化学系, 广州, 510637
  • 收稿日期:1994-12-07 修回日期:1995-05-10 出版日期:1995-12-24 发布日期:1995-12-24
  • 通讯作者: 汤又文,男,41岁,硕士,副教授.
  • 作者简介:汤又文,男,41岁,硕士,副教授.

Preconcentration of Silver on Blue Algae Determination by Slurry Graphite Furnace Atomic Absorption Spectrometry

TANG You-Wen, SONG Jian-Yi, MO Sheng-Jun   

  1. Department of Chemistry, South China Normal University, Guangzhou, 510631
  • Received:1994-12-07 Revised:1995-05-10 Online:1995-12-24 Published:1995-12-24

PDF (PC)

被引次数

12

关键词: 藻, 富集, 银, 悬浮液, 石墨炉

Abstract: This work studied the ability and conditions of a pure blue algae to preconcentrate Ag ions of 10-3level from 10～50 mLwater samples. This preconcentration is achieved by mixing 8mg of dried algae with 50 mLof a Ag containing solution and subsequent separation by centrifugation.The algae pellet is then suspended in 1mL of solution and analysed as a slurry by GFAAS.It is shown that after the algae are rinsed with 5%HCl solution, Ag adsorption on the alga is improved.The optimum pHrange of absorption extraction is between 4～6,and the absorption extraction efficiency is 88 ± 2%.After agitated with ultrasonic wave for 4 min,the preconcentration can come up to the highest recovery.

Key words: Algae, Preconcentration, Silver, Slurry, Graphite furnace

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