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Offline and online solid phase extraction/preconcentration of inorganics

Shodhganga@INFLIBNET

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Title Offline and online solid phase extraction/preconcentration of inorganics
 
Contributor Rao, T Prasada
 
Description Solid phase extraction (SPE) is a powerful technique for
preconcentration/removal or separation of trace and ultra trace amounts of toxic
and nutrient elements. SPE effectively simplifies the labour intensive sample
preparation, increase its reliability and eliminate the clean up step by using more
selective extraction procedures. The synthesis of sorbents with a simplified
procedure and diminution of the risks of errors shows the interest in the areas of
environmental monitoring, geochemical exploration, food, agricultural,
pharmaceutical, biochemical industry and high purity metal designing, etc.
There is no universal SPE method because the sample pretreatment
depends strongly on the analytical demand. But there is always an increasing
demand for more sensitive, selective, rapid and reliable analytical procedures.
Among the various materials, chelate modified naphthalene, activated carbon and
chelate functionalized highly cross linked polymers are most important. In the
biological and environmental field, large numbers of samples are to be analysed
within a short span of time. Hence, online flow injection methods are preferred as
they allow extraction, separation, identification and quantification of many
numbers of analytes.
Chapter 1 deals with general introduction to solid phase extractive
preconcentration and techniques adopted for the preconcentration.
Chapter 2 describes the determination of mercury (II) in Biological
samples, such as hair using quinolin-8-thiol modified naphthalene as a solid phase
extractant. The preparation of above mentioned material is very simple and the
mercury (II) coprecipitated on naphthalene is simply dissolved in acetone for
subsequent determination using dithizone procedure. Various parameters that
influence the preconcentration of mercury (II) by solid phase extraction are
systematically optimized and results obtained are discussed in this chapter.
List of Publications 144p.
 
Date 2011-04-13T05:14:49Z
2011-04-13T05:14:49Z
2011-04-13
July 2005
 
Type Ph.D.
 
Identifier http://hdl.handle.net/10603/1958
 
Language English
 
Rights university
 
Format v, 144p.
DVD
 
Publisher Cochin
Cochin University of Science and Technology
Regional Research Laboratory
 
Source INFLIBNET