A study to characterize the suspended particulate matter in an indoor environment in Delhi, India

2007 ◽  
Vol 42 (5) ◽  
pp. 2046-2052 ◽  
Author(s):  
Arun Srivastava ◽  
V.K. Jain
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Indoor Environment ◽  
Suspended Particulate

scholarly journals Particulate matter investigation in indoor environment

2013 ◽  
Vol 12 (1) ◽  
pp. 20-26
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
Indoor Environment ◽  
Absorption Spectrometry ◽  
Adverse Health Effects ◽  
Premature Deaths ◽  
Suspended Particulate ◽  
Iron And Zinc ◽  
Indoor Air Pollutants ◽  
The City

Particulate matter is one of the most important indoor air pollutants involved in a number of adverse health effects, such as premature deaths and increased mortality of infants and other parts of sensitive population. This paper focuses on investigation of metal substances of suspended as well as settled particulate matter in indoor environment. The monitoring of particulate matter concentration was carried out in three rooms of a selected flat building in the city of Košice, Slovakia. The sampling of settled particulate matter was carried out by passive methods during the period of 28 days. The investigation of suspended particulate matter investigation focused on total suspended particles (TSP) and thoracic fraction called PM10. The presence of selected metals in the samples was detected by atomic absorption spectrometry. The surface concentrations of settled particulate matter were detected in the range from 276.43 μg cm-2 to 570.70 μg cm-2, mass concentrations of total suspended particulate matter from 59.028 to 114.583 μg m-3. PM10 concentration values reached about half of the TSP concentration values (PM10/TSP ratio was from 0.48 to 0.6). Higher percentage of metals was detected in suspended particulate matter in comparison to the settled particles. Higher values were detected for all metals (except iron and zinc) in each measured room.

Physical and bacterial processes affecting suspended particulate matter in a tidal river

1998 ◽  
Vol 38 (6) ◽  
pp. 327-335
Author(s):  
Yasunori Kozuki ◽  
Yoshihiko Hosoi ◽  
Hitoshi Murakami ◽  
Katuhiro Kawamoto
Keyword(s):  
Particle Size ◽  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
River Mouth ◽  
Tidal River ◽  
Natural Soil ◽  
Size Change ◽  
Run Off ◽  
Suspended Particulate ◽  
And Behavior

In order to clarify the origin and behavior of suspended particulate matter (SPM) in a tidal river, variation of SPM in a tidal river was investigated with regard to its size and constituents. SPM was separated into three groups according to size. Change of contents of titanium and organic substances of each group of SPM was examined. SPM which was discharged by run-off was transported with decomposition and sedimentation in a tidal river. Concentration of SPM with a particle size greater than 0.45 μm increased due to resuspension in a tidal river. Origin of SPM with a size of less than 0.45 μm at upstream areas was from natural soil and most of such SPM which had been transported settled near a river mouth. It was determined from examination of the CN ratio and the ratio of the number of attached bacteria to free bacteria that SPM with a size greater than 1.0 μm at upstream areas was decomposing intensively. At the downstream areas, SPM with a size of less than 0.45 μm came from the sea. SPM with particle size greater than 1.0 μm consisted of plankton and substances which were decomposed sufficiently while flowing.

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