Abstract
An analysis of water-soluble samples collected from marble and sandstone of monuments for different ions have been done. The combustion, manufacturing and other polluting operations existing within Agra area have been investigated. The measurements of flue gases amounting to 3.63 × 10 9 S.C.F. indicate atmospheric contamination and deterioration of archaeological monuments of Agra. It has been found that the principal sources of air contamination are the 325 iron foundries and 3 railway shunting yards located within 0.3 to 3.0 Km. of the main monuments. The topographical and micrometeorological conditions of the city have tended to favour and aggravate the concentration of effluents in the surrounding air of the monuments. The annual average existing level of SO 2 ranges from 16 to 20 micrograms/m 3. The seasonal distribution of SO 2 and suspended particulate matter in the air at Taj Mahal, Red Fort and Sikandra have been discussed and illustrated. It has been observed that there is substantial sulphur dioxide contamination existing at Agra. The maximum concentration of SO 4 2− and NO 3 − amounting 0.46 and 0.38 respectively by weight percentage found existing at Red Fort cause efflorescences of sandstone.
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