Atmospheric concentration of pollen grains at human height

Malik, Pushpa ; Singh, A. B. ; Babu, C. R. ; Gangal, S. V. (1991) Atmospheric concentration of pollen grains at human height Grana, 30 (1). 129 - 135. ISSN 0017-3134

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An atmospheric survey at human height (1.5-1.8 ft) was carried out from February 1988 to January 1990, in four different ecozones of the Delhi metropolis. The samples were collected by using Burkard Personal Volumetric Sampler at weekly intervals. The sampler was operating for 15 min three times a day (07, 14, 20 hrs). Altogether, 84 pollen types were identified. Some of the dominant pollen types recorded were Poaceae (25.1%), Cheno/Amaranthaceae (14.5%) and Ricinus communis (12.3%) followed by Morus, Cannabis, Prosopis, Parthenium and Artemisia. Weekly variations were recorded for the total number of pollen of different types in different months. Two major pollen seasons 1. February - April and 2. August - October were observed, although pollen was recorded throughout the year. Significant variation in total and individual pollen concentration was recorded from different inhabited areas in the same urban locality. Any definite daily pattern in the occurrence of pollen was not recorded. The concentration at lower height was also poor.

Item Type:Article
Source:Copyright of this article belongs to Scandinavian Palynological Collegium.
ID Code:10667
Deposited On:04 Nov 2010 06:58
Last Modified:16 May 2016 20:14

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