In Situ Investigation the Photolysis of the PAHs Adsorbed on Mangrove Leaf Surfaces by Synchronous Solid Surface FluorimetryReportar como inadecuado




In Situ Investigation the Photolysis of the PAHs Adsorbed on Mangrove Leaf Surfaces by Synchronous Solid Surface Fluorimetry - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

An established synchronous solid surface fluorimetry S-SSF was utilized for in situ study the photolysis processes of anthracene An and pyrene Py adsorbed on the leaf surfaces of Kandelia obovata seedlings Ko and Aegiceras corniculata L. Blanco seedlings Ac. Experimental results demonstrated that the photolysis of An and Py adsorbed on the leaf surfaces of two mangrove species under the laboratory conditions, followed first-order kinetics with their photolysis rates in the order of Ac>Ko. In addition, with the same amount of substances, the photolysis rate of An adsorbed on the same mangrove leaf surfaces was much faster than the adsorbed Py. In order to investigate further, the photolysis processes of An and Py in water were also studied for comparison. And the photolysis of An and Py in water also followed first-order kinetics. Moreover, for the same initial amount, the photolysis rate of the PAH in water was faster than that adsorbed on the leaf surfaces of two mangrove species. Therefore, photochemical behaviors of PAHs were dependent not only on their molecular structures but also the physical-chemical properties of the substrates on which they are adsorbed.



Autor: Ping Wang, Tun-Hua Wu, Yong Zhang

Fuente: http://plos.srce.hr/



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