Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/13619
Title: Speciation studies of toxic trace elements in environmental samples by ICP-MS
Authors: YU CHUNHAI
Keywords: Speciation; arsenic; antimony; tellurium; selenium; water
Issue Date: 11-Feb-2004
Source: YU CHUNHAI (2004-02-11). Speciation studies of toxic trace elements in environmental samples by ICP-MS. ScholarBank@NUS Repository.
Abstract: This thesis deals mainly with the development of novel, simple and sensitive methods for speciation analyses of arsenic, antimony, tellurium and selenium based on selective solid phase extraction (SPE) separations of the specified species and highly sensitive detections with inductively coupled plasma mass spectrometry (ICP-MS). On the basis of selective retention on and elution from various specific silica-based SPE cartridges, different arsenic species were separated and selectively determined by ICP-MS. Based on the selective retention of Sb(III), Se(IV) and Te(IV) complexes with ammonium pyrrolidine dithiocarbamate on the SPE cartridges, speciation analyses of inorganic antimony, tellurium and selenium were achieved in water samples by ICP-MS. Factors affecting the separation and detection of As, Sb, Se and Te species were investigated. All these developed methods have been successfully applied to the speciation analyses of arsenic, inorganic antimony, tellurium and selenium in various sources of water samples with good precision and accuracy.
URI: http://scholarbank.nus.edu.sg/handle/10635/13619
Appears in Collections:Master's Theses (Open)

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