Species distribution of polymeric aluminium-ferrum--timed complexation colorimetric analysis method of Al-Fe-ferron.
The effects of the colorimetric buffer solutions were investigated while the two colorimetric reactions of Al-ferron complex and Fe-ferron complex occurred individually, and the effects of the testing wavelength and the pH of the solutions were also investigated. A timed complexation colorimetric analysis method of Al-Fe-ferron in view of the total concentration of (Al + Fe) was then established to determine the species distribution of polymeric Al-Fe. The testing wavelength was recommended at 362 nm and the testing pH value was 5. With a comparison of the ratios of nAl/nFe, the standard adsorption curves of the polymeric Al-Fe solutions were derived from the experimental results. Furthermore, the solutions' composition were various in both the molar nAl/nFe ratios, i.e. 0/0, 5/5, 9/1 and 0/10, and the concentrations associated with the total [Al + Fe] which ranged from 10(-5) to 10(-4) mol/L.
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College of Paper & Environmental Engineering, South China University of Technology, Guangzhou 510640. ppyyhu@suct.edu.cn
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Wu
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D000327:Adsorption; D000535:Aluminum / Q000032:analysis / Q000737:chemistry*; D003124:Colorimetry; D007501:Iron / Q000032:analysis / Q000737:chemistry*; D008962:Models, Theoretical; D011108:Polymers; D014873:Water Pollutants / Q000032:analysis
D011108:Polymers; D014873:Water Pollutants; D000535:Aluminum; D007501:Iron