Solid phase reflection diffusion spectrophotometric determination of silver in geological samples loaded by filter paper
Gold Geology(2003)
摘要
This paper studied a new kind of solid phase spectrophotometry called solid phase reflection spectrophotometry,choosing filter paper as load,studying the filter paper phase reflection spectrophotometry of comples of silver and Rhodomine, the content of Ag in the sample is detected.Experiments show that silver and Rhodomine form a stable complex in acid medium with the present of surfactants SDBS.This complex can be filted to the surface of the filter paper.Its maximum absorption wave length is 590 nm, In the range of 0~12 μg/25 mL Ag there is a good linear relationship between the absorption value and the concentration of Ag.The detection limit is 005 μg/mL and the relative error is 43%.
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关键词
UV-VIS Spectroscopy
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