{"id":{"repo_id":"buffalo","oai_identifier":"oai:ubir.buffalo.edu:10477/79428"},"canonical_url":"https://search.dev.ndltd.org/etd/buffalo/oai:ubir.buffalo.edu:10477/79428","repository":{"repo_id":"buffalo","name":"Buffalo","base_url":"https://ubir.buffalo.edu/oai/request"},"display":{"title":"Ultrasonic Cavitation and UV-Photogeneration of Hydrides for Improved Sample Introduction Efficiency in Atomic Spectrometry","abstract":"M.A.","abstract_html":"M.A.","abstract_has_math":false,"creators":["Lopez Velazquez, Darryl"],"institution":"State University of New York at Buffalo","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Ray, Steven","Chemistry"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-04-04T20:32:51Z","date_published":"2019-04-04T20:32:51Z","updated_at":"2026-07-27T19:05:16Z","subjects":["analytical chemistry"],"languages":["eng"],"rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10477/79428","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ray, Steven","Chemistry"]},{"key":"dc:creator","label":"Author","values":["Lopez Velazquez, Darryl"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-04-04T20:32:51Z","2019","2019-01-18 13:19:17"]},{"key":"dc:publisher","label":"Institution","values":["State University of New York at Buffalo"]},{"key":"dc:type","label":"Dc Type","values":["Text","Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["analytical chemistry"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/10477/79428"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["M.A.","Arsenic is a common and important pollutant. One common method of arsenic sample introduction is by using hydride generation. Hydride Generation is a method by which a non-volatile precursor (ionic or metal species) is made into a volatile species by reaction with hydrogen (in the form of a hydride ion). Here, we explore ultraviolet (UV) photogeneration of hydrides, where a UV-source transmits radiation to a sample containing the analyte. Reduction of the sample occurs and an analyte-hydride species is formed. This approach avoids most of the cost and chemical waste associated with conventional hydride generation. Ultrasonic cavitation is also investigated as a means of increasing the efficiency of this technique. Acoustic cavitation is the formation, growth and collapse of bubbles inside an aqueous liquid. When ultrasonic waves pass through a solution, regions of pressure encourage formation of gas cavities. When coupled with a hydride generation reaction, these cavitation bubbles contain the desired analyte. Using a peristaltic pump, a liquid reaction mixture is pumped through the tubing and past a UV-lamp for photogeneration of the hydride species. The reaction mixture is then pumped along the surface of an ultrasonic transducer, which is made of a piezoelectric material. When the piezoelectric vibrates, gas cavities are formed inside the reaction stream, extracting the gaseous analyte for subsequent analysis. Here, the construction and testing of a segmented flow analysis system, ultrasonic cavitation, and hydride generation systems are investigated."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Ultrasonic Cavitation and UV-Photogeneration of Hydrides for Improved Sample Introduction Efficiency in Atomic Spectrometry"]}]}],"canonical_facts":{"dc:contributor":["Ray, Steven","Chemistry"],"dc:creator":["Lopez Velazquez, Darryl"],"dc:date":["2019-04-04T20:32:51Z","2019","2019-01-18 13:19:17"],"dc:description":["M.A.","Arsenic is a common and important pollutant. One common method of arsenic sample introduction is by using hydride generation. Hydride Generation is a method by which a non-volatile precursor (ionic or metal species) is made into a volatile species by reaction with hydrogen (in the form of a hydride ion). Here, we explore ultraviolet (UV) photogeneration of hydrides, where a UV-source transmits radiation to a sample containing the analyte. Reduction of the sample occurs and an analyte-hydride species is formed. This approach avoids most of the cost and chemical waste associated with conventional hydride generation. Ultrasonic cavitation is also investigated as a means of increasing the efficiency of this technique. Acoustic cavitation is the formation, growth and collapse of bubbles inside an aqueous liquid. When ultrasonic waves pass through a solution, regions of pressure encourage formation of gas cavities. When coupled with a hydride generation reaction, these cavitation bubbles contain the desired analyte. Using a peristaltic pump, a liquid reaction mixture is pumped through the tubing and past a UV-lamp for photogeneration of the hydride species. The reaction mixture is then pumped along the surface of an ultrasonic transducer, which is made of a piezoelectric material. When the piezoelectric vibrates, gas cavities are formed inside the reaction stream, extracting the gaseous analyte for subsequent analysis. Here, the construction and testing of a segmented flow analysis system, ultrasonic cavitation, and hydride generation systems are investigated."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/10477/79428"],"dc:language":["eng"],"dc:publisher":["State University of New York at Buffalo"],"dc:rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"dc:subject":["analytical chemistry"],"dc:title":["Ultrasonic Cavitation and UV-Photogeneration of Hydrides for Improved Sample Introduction Efficiency in Atomic Spectrometry"],"dc:type":["Text","Thesis"]},"updated_at":"2026-07-27T19:05:16Z"}