Influence of nitrogen dioxide and acetylene on marbles, ceramics and pigment

The air pollution has a great impact on the social and economic aspects all over the world.
Thus, the interaction of materials with the atmosphere has received increased attention
nowadays. In order to estimate the impacts of air pollution on the solid surfaces a suitable
scientific basis is developed and the well known Reversed Flow - Inverse Gas
Chromatography, RF- IGC, is used. This dynamic experimental technique leads to very
interesting experimental results through the determination of some important physicochemical
quantities. The solids studied were Pentelic marble, white TiO2 pigment, ceramic and the
gases were NO2 and C2H2. The synergistic effects between acetylene and nitrogen dioxide
were also investigated. Through the curves obtained for each adsorption quantity determined
versus time, one can easily and accurately conclude the result of the pollution impact on
every solid mentioned above. The surface topography and the mechanism of deterioration
can also be studied. All the above answer in detail to the questions of where, when and how
the influence of gas pollutants on materials of cultural heritage takes place.