- 作者: 林振霖
- 作者服務機構: Department of Chemistry, National Taiwan College of Education, Chunghua, Taiwan 500, R.O.C.
- 中文摘要: A new atomic absorption spectrophotometric method has been developed for the trace determination of copper after adsorption of its 4'-(p-methoxyphenyl)-2, 2':6', 2''-terpyridine tetraphenylborate ion-associated complex on microcrystalline naphthalene. This complex is adsorbed on microcrystalline naphthalene in the pH range 0.5-11.0 by shaking for a few seconds. The solid mass so formed is separated by filtration, dissolved in dimethylformamide and the absorbance is measured at 324.7nm. Beer's law is obeyed in the concentration range 5.0-60.0 .mu.g of copper in 10ml of the final dimethylformamide solution. The replicate determinations of a sample containing 30 .mu.g of copper gave a mean absorbance of 0.171 with a standard deviation of 0.0019 and a relative standard deviation of 1.11%. The method has been applied to the determination of copper in certain standard reference materials.
- 英文摘要: --
- 中文關鍵字: Atomic absorption spectrophotometry; Naphthalene adsorption; MPTP; TPB; Cu (I) analysis in alloys.
- 英文關鍵字: Atomic absorption spectrophotometry; Naphthalene adsorption; MPTP; TPB; Cu (I) analysis in alloys.