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Benzene and toluene influence with or without nitrogen dioxide on inorganic pigments of works of art- Part Ⅱ

机译:有或没有二氧化氮的苯和甲苯对艺术品无机颜料的影响-第二部分

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摘要

Air pollution has a great impact on the social and economic aspects all over the world. In order to account the human interaction with the atmospheric environment, a suitable scientific basis is needed. That is why six physicochemical quantities have been determined in a previous work for each one heterogeneous system between organic volatile pollutants and oxide-pigments of works of art. This investigation is extended in order to determine experimentally five new ones. Thus, a more precise contribution to the elucidation of the mechanism of the deterioration of various works of art in museums is achieved. These physicochemical quantities are: (1) local adsorption energies, (2) local monolayer capacities, (3) local adsorption isotherms, (4) density probability function, and (5) pollutant concentration on the oxide-pigment at equilibrium. All these adsorption parameters mentioned above have been calculated as a function of experimental time for the systems: C_6H_6/TiO_2 C_6H_6/NO_2/TiO_2 C_6H_6/Cr_2O_3 C_6H_6/NO_2/Cr_2O_3 C_6H_5CH_3/TiO_2, C_6H_5CH_3/NO_2/TiO_2, C_6H_5CH_3/Cr_2O_3, C_6H_5CH_3/NO_2/Cr_2O_3, C_6H_6/PbO, C_6H_6/NO_2/PbO, C_6H_5CH_3/ PbO, and C_6H_5CH_3/NO_2/PbO for the first time. Thus, in this work we shall stress the recent new aspect of Reversed Flow-(Inverse) Gas Chromatography (RF-GC or RF-IGC), i.e. the time-resolved chromatography related to the evaluation of some important adsorption parameters. Gas Chromatography is a promising meeting place of surface science and atmospheric chemistry.
机译:空气污染对全世界的社会和经济方面都具有重大影响。为了说明人类与大气环境的相互作用,需要适当的科学依据。这就是为什么在先前的工作中为有机挥发性污染物和艺术品的氧化物颜料之间的每个异质系统确定了六个物理化学量的原因。为了确定实验上的五个新范围,扩展了该调查范围。因此,在阐明博物馆中各种艺术作品的恶化机理方面做出了更精确的贡献。这些物理化学量为:(1)局部吸附能,(2)局部单层容量,(3)局部吸附等温线,(4)密度概率函数和(5)平衡状态下氧化物-颜料上的污染物浓度。上面提到的所有这些吸附参数均已根据系统的实验时间进行了计算:C_6H_6 / TiO_2 C_6H_6 / NO_2 / TiO_2 C_6H_6 / Cr_2O_3 C_6H_6 / NO_2 / Cr_2O_3 C_6H_5CH_3 / TiO_2,C_6H_5CH_3_NO_3 / TiO_2,C_6H_3_NO_3 / TiO_2, / NO_2 / Cr_2O_3,C_6H_6 / PbO,C_6H_6 / NO_2 / PbO,C_6H_5CH_3 / PbO和C_6H_5CH_3 / NO_2 / PbO首次。因此,在这项工作中,我们将强调逆流-(反相)气相色谱(RF-GC或RF-IGC)的最新新方面,即与某些重要吸附参数的评估有关的时间分辨色谱。气相色谱是表面科学和大气化学的一个有希望的聚会场所。

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