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Title: Characterisation of medicinal aerosols
Authors: Gupta, J P
Joshi, P V
Nair, P V N
Nambi, K S V
Issue Date: Sep-1995
Publisher: NISCAIR-CSIR, India
Abstract: Four commercially available medicinal aerosol products in India have been assessed for the aerosol size distribution at two different humidities using a ten stage cascade impactor device having a quartz crystal microbalance system. An indigenously made nebulizer in use in a city hospital has also been assessed for its aerosol efficiency. The size range is between 0.05 and 25 µm. Mode in the aerosol mass size distribution is between 0.4 and 1.6 µm at 30% relative humidity (RH) and between 0.4 and 3.2 µm at 85% RH for three inhalers: the mode for powder inhaler is between 3.2 and 6.4 µm at 30% RH and 25 µm at 85% RH. The mode for indiginous nebulizer is between 0.05 and 0.1 µm. These results are discussed in the context of the deposition of aerosols in the human respiratory system.
Page(s): 281-286
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.02(5) [September 1995]

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