{"id":{"repo_id":"plymouth","oai_identifier":"oai:pearl.plymouth.ac.uk:gees-theses-1558"},"canonical_url":"https://search.dev.ndltd.org/etd/plymouth/oai:pearl.plymouth.ac.uk:gees-theses-1558","repository":{"repo_id":"plymouth","name":"University of Plymouth","base_url":"https://pearl.plymouth.ac.uk/do/oai"},"display":{"title":"REACTIVE GASES IN ELECTROTHERMAL ATOMISATION ATOMIC ABSORPTION SPECTROMETRY","abstract":"A variety of gases and vapours of organic compounds have been used as matrix modifiers in electrothermal atomic absorption spectroscopy (ETAAS). Oxidising gases such as air or nitrous-oxide, introduced during the charring stage, both thermally stabilised analytes such as lead, and improved the efficiency of pyrolysis by converting the normal charring into an ashing step. A number of interferences eg. magnesium chloride on lead determinations and non-specific absorbance interferences, decreased when air was introduced. Hydrocarbon gases (< 5% v/v) introduced during charring improved sensitivity (up to 89%) for certain refractory analytes (eg. Al, Ca, Mg, Si and V), prolonged tube life and improved precision.","abstract_html":"A variety of gases and vapours of organic compounds have been used as matrix modifiers in electrothermal atomic absorption spectroscopy (ETAAS). Oxidising gases such as air or nitrous-oxide, introduced during the charring stage, both thermally stabilised analytes such as lead, and improved the efficiency of pyrolysis by converting the normal charring into an ashing step. A number of interferences eg. magnesium chloride on lead determinations and non-specific absorbance interferences, decreased when air was introduced. Hydrocarbon gases (< 5% v/v) introduced during charring improved sensitivity (up to 89%) for certain refractory analytes (eg. Al, Ca, Mg, Si and V), prolonged tube life and improved precision.","abstract_has_math":false,"creators":["Fisher, Andrew"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1991,"date_issued":"1991-01-01T08:00:00Z","date_published":"1991-01-01T08:00:00Z","updated_at":"2026-07-24T03:49:07Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://pearl.plymouth.ac.uk/gees-theses/116","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Fisher, Andrew"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["1991-01-01T08:00:00Z"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://pearl.plymouth.ac.uk/gees-theses/116"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A variety of gases and vapours of organic compounds have been used as matrix modifiers in electrothermal atomic absorption spectroscopy (ETAAS). Oxidising gases such as air or nitrous-oxide, introduced during the charring stage, both thermally stabilised analytes such as lead, and improved the efficiency of pyrolysis by converting the normal charring into an ashing step. A number of interferences eg. magnesium chloride on lead determinations and non-specific absorbance interferences, decreased when air was introduced. Hydrocarbon gases (< 5% v/v) introduced during charring improved sensitivity (up to 89%) for certain refractory analytes (eg. Al, Ca, Mg, Si and V), prolonged tube life and improved precision."]},{"key":"dc:title","label":"Title","values":["REACTIVE GASES IN ELECTROTHERMAL ATOMISATION ATOMIC ABSORPTION SPECTROMETRY"]}]}],"canonical_facts":{"dc:creator":["Fisher, Andrew"],"dc:date.issued":["1991-01-01T08:00:00Z"],"dc:description.abstract":["A variety of gases and vapours of organic compounds have been used as matrix modifiers in electrothermal atomic absorption spectroscopy (ETAAS). Oxidising gases such as air or nitrous-oxide, introduced during the charring stage, both thermally stabilised analytes such as lead, and improved the efficiency of pyrolysis by converting the normal charring into an ashing step. A number of interferences eg. magnesium chloride on lead determinations and non-specific absorbance interferences, decreased when air was introduced. Hydrocarbon gases (< 5% v/v) introduced during charring improved sensitivity (up to 89%) for certain refractory analytes (eg. Al, Ca, Mg, Si and V), prolonged tube life and improved precision."],"dc:identifier":["https://pearl.plymouth.ac.uk/gees-theses/116"],"dc:language":["eng"],"dc:title":["REACTIVE GASES IN ELECTROTHERMAL ATOMISATION ATOMIC ABSORPTION SPECTROMETRY"],"dc:type":["Thesis"]},"updated_at":"2026-07-24T03:49:07Z"}