Loading...
The application of differential pulse anodic stripping voltammetry for the determination of copper, lead, zinc and cadmium in airborne particulate matter
Author(s)
Jahed, Mohammed Nazeem
Date Issued
1995
Type
Thesis
Publisher
Peninsula Technikon
Abstract
An analytical method using Differential Pulse Anodic Stripping Voltammetry was
developed for determining trace quantities of Cu, Pb, Cd and Zn in airborne
particulate matter. The levels of the metallic pollutants were evaluated against
meteorological data.
Instrumental parameters and sample processing were optimised for determining
the metals in the concentration range 1 to 40 μg/l with a percentage relative
standard deviation (%RSD) less than 10%.
Airborne particulate matter was decomposed by heating in a mixture of
Hydrochloric and Sulphuric acids. Recovery studies were used to evaluate the
digestion procedure, in the absence of a suitable reference material. The
percentage recovery for the metals were between 95% and 100%. A total of 77
air samples were collected from January to December 1992, on the campus of the
Peninsula Technikon. The samples were collected over 24 hour periods by
filtration at a sampling rate of 20 liters per minute. The total average concentration
for the metals was 25.3μg/m³. . No Cd was detected in any of the samples.
developed for determining trace quantities of Cu, Pb, Cd and Zn in airborne
particulate matter. The levels of the metallic pollutants were evaluated against
meteorological data.
Instrumental parameters and sample processing were optimised for determining
the metals in the concentration range 1 to 40 μg/l with a percentage relative
standard deviation (%RSD) less than 10%.
Airborne particulate matter was decomposed by heating in a mixture of
Hydrochloric and Sulphuric acids. Recovery studies were used to evaluate the
digestion procedure, in the absence of a suitable reference material. The
percentage recovery for the metals were between 95% and 100%. A total of 77
air samples were collected from January to December 1992, on the campus of the
Peninsula Technikon. The samples were collected over 24 hour periods by
filtration at a sampling rate of 20 liters per minute. The total average concentration
for the metals was 25.3μg/m³. . No Cd was detected in any of the samples.
Additional information
Thesis (MTech (Chemistry))--Peninsula Technikon, Cape Town, 1995
File(s)![Thumbnail Image]()
Loading...
Name
193065541_Jahed_MN_1995.pdf
Size
1.34 MB
Format
Adobe PDF
Checksum
(MD5):2fa891b17d23652cb334ae091dfb361e