caa a22 4500 378863525 CHVBK 20180305123352.0 cr unu---uuuuu 161128e200303 xx s 000 0 eng 10.1515/REST.2003.46 doi (NATIONALLICENCE)gruyter-10.1515/REST.2003.46 Prajapati C. L. Scientific officer, National Archives of India, Janpath, New Delhi-01 Accumulation of Solid Particles on Documents, A Threat for Preservation of Documentary Heritage: The Example of the National Archives of India [Elektronische Daten] [C. L. Prajapati] L'accumulation de particules solides sur les documents. L'exemple des Archives Nationales de l'Inde Die Ansammlung von Feststoffpartikeln auf Dokumenten. Das Beispiel des Nationalarchivs von Indien Dust of various origins in the environment of tropical and subtropical regions is a common phenomenon and the Indian sub-continent is no exception. These particles adversely affect documentary cultural heritage in various ways. To find out more relevant facts a study was conducted in the National Archives of India. The dust accumulated in the repositories of the NAI was composed of heavy and light particles, most probably of inorganic and organic origin. Its colour was black, while that found in libraries located in small cities was brown and almost completely inorganic. The dust of metropolitan cities was sticky while that of small cities was not. The rate of dust accumulation during the year was highly dependent on the rainfall, being highest in the dry summer and lowest during the rainy period July-September. The total dust accumulated in the repositories of the NAI varied in different stack areas from 6.07 to 7.14mg/m2 per annum. These numbers are alarming. Advice is given as to how they can be reduced.   © 2003 K. G. Saur Verlag GmbH, Ortlerstr. 8, D-81373 München Restaurator Walter de Gruyter GmbH & Co. KG 24/1(2003-03), 46-54 0034-5806 24:1<46 2003 24 REST https://doi.org/10.1515/REST.2003.46 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/REST.2003.46 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Prajapati C. L. Scientific officer, National Archives of India, Janpath, New Delhi-01 NATIONALLICENCE 773 0- Restaurator Walter de Gruyter GmbH & Co. KG 24/1(2003-03), 46-54 0034-5806 24:1<46 2003 24 REST CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter