{"id":{"repo_id":"strathclyde","oai_identifier":"oai:strathclyde:j6731387r"},"canonical_url":"https://search.dev.ndltd.org/etd/strathclyde/oai:strathclyde:j6731387r","repository":{"repo_id":"strathclyde","name":"University of Strathclyde","base_url":"https://stax.strath.ac.uk/catalog/oai"},"display":{"title":"Development of analytical techniques for detection and remediation of polychlorinated biphenyls in soil and water samples","abstract":"In this study, GC-MS methods were developed for identifying and quantifying nineteenand five pre-selected PCB congeners in solution. The developed methods wererepeatable (≤ 4.9 %) and reproducible (≤ 7.7 %) with detection limits of1.25 - 15 ng µL-1. The extraction of PCBs from soil and water samples was achievedusing the ASE and C18 (EC) SPE methods with recoveries of 81 - 94 % and 41 - 49 %respectively. Although none of the target PCB congeners were detected in soil and watersamples collected from Lagos, Nigeria, similar recoveries were obtained from spikedsamples; indicating that the developed methods could be satisfactorily used to extractPCBs from environmental samples.The adsorption of PCBs from aqueous solutions onto activated carbons - PAC, GAC andEAC was examined using batch experiments. The removal efficiencies obtained forPAC (75 - 90 %), GAC (79 - 99 %) and EAC (60 - 74 %) indicated that each AC couldbe successfully used to remove PCBs from water. In contrast to EAC, which had a slightdecrease in performance as the concentration of aqueous solution increased, a significantdecrease in performance was observed for PAC and GAC. The equilibrium dataobtained for each AC was well described by the Langmuir isotherm modelcorresponding to the presence of a homogeneous surface. Amongst the three ACs, EAChad the highest maximum adsorption capacity (35 mg g-1) compared to PAC(29.4 mg g-1) and GAC (30.4 mg g-1). The adsorption kinetic data obtained for each AChad a better fit to the pseudo second-order kinetic model indicating that chemisorptionwas responsible for the sorption of PCBs onto each AC. The optimum performance ofthe three ACs was achieved at solution pH 3.","abstract_html":"In this study, GC-MS methods were developed for identifying and quantifying nineteenand five pre-selected PCB congeners in solution. The developed methods wererepeatable (≤ 4.9 %) and reproducible (≤ 7.7 %) with detection limits of1.25 - 15 ng µL-1. The extraction of PCBs from soil and water samples was achievedusing the ASE and C18 (EC) SPE methods with recoveries of 81 - 94 % and 41 - 49 %respectively. Although none of the target PCB congeners were detected in soil and watersamples collected from Lagos, Nigeria, similar recoveries were obtained from spikedsamples; indicating that the developed methods could be satisfactorily used to extractPCBs from environmental samples.The adsorption of PCBs from aqueous solutions onto activated carbons - PAC, GAC andEAC was examined using batch experiments. The removal efficiencies obtained forPAC (75 - 90 %), GAC (79 - 99 %) and EAC (60 - 74 %) indicated that each AC couldbe successfully used to remove PCBs from water. In contrast to EAC, which had a slightdecrease in performance as the concentration of aqueous solution increased, a significantdecrease in performance was observed for PAC and GAC. The equilibrium dataobtained for each AC was well described by the Langmuir isotherm modelcorresponding to the presence of a homogeneous surface. Amongst the three ACs, EAChad the highest maximum adsorption capacity (35 mg g-1) compared to PAC(29.4 mg g-1) and GAC (30.4 mg g-1). The adsorption kinetic data obtained for each AChad a better fit to the pseudo second-order kinetic model indicating that chemisorptionwas responsible for the sorption of PCBs onto each AC. The optimum performance ofthe three ACs was achieved at solution pH 3.","abstract_has_math":false,"creators":["Idialu, Ofure Ruth"],"institution":"University of Strathclyde","degree_name":"phd","degree_level":"doctoral-pg","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Gibson, Lorraine"],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016","date_published":"2016","updated_at":"2026-07-24T04:48:52Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.48730/4pv7-cv78"],"render_values":[{"text":"10.48730/4pv7-cv78","href":"https://doi.org/10.48730/4pv7-cv78","code":true}]},{"key":"dc:identifier","label":"Identifier","values":["T14461"],"render_values":[{"text":"T14461","href":null,"code":true}]},{"key":"dc:creator.authoridentifier","label":"Author Identifier","values":["201352899"],"render_values":[{"text":"201352899","href":null,"code":true}]}]},"links":{"outbound_url":"https://stax.strath.ac.uk/concern/theses/j6731387r","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Gibson, Lorraine"]},{"key":"dc:creator","label":"Author","values":["Idialu, Ofure Ruth"]},{"key":"dc:creator.authoridentifier","label":"Author Identifier","values":["201352899"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2016"]},{"key":"dc:date.issued","label":"Date","values":["2016"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Pure and Applied Chemistry"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Strathclyde"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["doctoral-pg"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["phd"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["T14461"]},{"key":"dc:identifier.doi","label":"DOI","values":["10.48730/4pv7-cv78"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://stax.strath.ac.uk/concern/theses/j6731387r"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Previously held under moratorium from 1st December 2016 until 1st December 2021.","In this study, GC-MS methods were developed for identifying and quantifying nineteenand five pre-selected PCB congeners in solution. The developed methods wererepeatable (≤ 4.9 %) and reproducible (≤ 7.7 %) with detection limits of1.25 - 15 ng µL-1. The extraction of PCBs from soil and water samples was achievedusing the ASE and C18 (EC) SPE methods with recoveries of 81 - 94 % and 41 - 49 %respectively. Although none of the target PCB congeners were detected in soil and watersamples collected from Lagos, Nigeria, similar recoveries were obtained from spikedsamples; indicating that the developed methods could be satisfactorily used to extractPCBs from environmental samples.The adsorption of PCBs from aqueous solutions onto activated carbons - PAC, GAC andEAC was examined using batch experiments. The removal efficiencies obtained forPAC (75 - 90 %), GAC (79 - 99 %) and EAC (60 - 74 %) indicated that each AC couldbe successfully used to remove PCBs from water. In contrast to EAC, which had a slightdecrease in performance as the concentration of aqueous solution increased, a significantdecrease in performance was observed for PAC and GAC. The equilibrium dataobtained for each AC was well described by the Langmuir isotherm modelcorresponding to the presence of a homogeneous surface. Amongst the three ACs, EAChad the highest maximum adsorption capacity (35 mg g-1) compared to PAC(29.4 mg g-1) and GAC (30.4 mg g-1). The adsorption kinetic data obtained for each AChad a better fit to the pseudo second-order kinetic model indicating that chemisorptionwas responsible for the sorption of PCBs onto each AC. The optimum performance ofthe three ACs was achieved at solution pH 3."]},{"key":"dc:description.abstract","label":"Abstract","values":["In this study, GC-MS methods were developed for identifying and quantifying nineteenand five pre-selected PCB congeners in solution. The developed methods wererepeatable (≤ 4.9 %) and reproducible (≤ 7.7 %) with detection limits of1.25 - 15 ng µL-1. The extraction of PCBs from soil and water samples was achievedusing the ASE and C18 (EC) SPE methods with recoveries of 81 - 94 % and 41 - 49 %respectively. Although none of the target PCB congeners were detected in soil and watersamples collected from Lagos, Nigeria, similar recoveries were obtained from spikedsamples; indicating that the developed methods could be satisfactorily used to extractPCBs from environmental samples.The adsorption of PCBs from aqueous solutions onto activated carbons - PAC, GAC andEAC was examined using batch experiments. The removal efficiencies obtained forPAC (75 - 90 %), GAC (79 - 99 %) and EAC (60 - 74 %) indicated that each AC couldbe successfully used to remove PCBs from water. In contrast to EAC, which had a slightdecrease in performance as the concentration of aqueous solution increased, a significantdecrease in performance was observed for PAC and GAC. The equilibrium dataobtained for each AC was well described by the Langmuir isotherm modelcorresponding to the presence of a homogeneous surface. Amongst the three ACs, EAChad the highest maximum adsorption capacity (35 mg g-1) compared to PAC(29.4 mg g-1) and GAC (30.4 mg g-1). The adsorption kinetic data obtained for each AChad a better fit to the pseudo second-order kinetic model indicating that chemisorptionwas responsible for the sorption of PCBs onto each AC. The optimum performance ofthe three ACs was achieved at solution pH 3."]},{"key":"dc:title","label":"Title","values":["Development of analytical techniques for detection and remediation of polychlorinated biphenyls in soil and water samples"]}]}],"canonical_facts":{"dc:contributor.advisor":["Gibson, Lorraine"],"dc:creator":["Idialu, Ofure Ruth"],"dc:creator.authoridentifier":["201352899"],"dc:date":["2016"],"dc:date.issued":["2016"],"dc:description":["Previously held under moratorium from 1st December 2016 until 1st December 2021.","In this study, GC-MS methods were developed for identifying and quantifying nineteenand five pre-selected PCB congeners in solution. The developed methods wererepeatable (≤ 4.9 %) and reproducible (≤ 7.7 %) with detection limits of1.25 - 15 ng µL-1. The extraction of PCBs from soil and water samples was achievedusing the ASE and C18 (EC) SPE methods with recoveries of 81 - 94 % and 41 - 49 %respectively. Although none of the target PCB congeners were detected in soil and watersamples collected from Lagos, Nigeria, similar recoveries were obtained from spikedsamples; indicating that the developed methods could be satisfactorily used to extractPCBs from environmental samples.The adsorption of PCBs from aqueous solutions onto activated carbons - PAC, GAC andEAC was examined using batch experiments. The removal efficiencies obtained forPAC (75 - 90 %), GAC (79 - 99 %) and EAC (60 - 74 %) indicated that each AC couldbe successfully used to remove PCBs from water. In contrast to EAC, which had a slightdecrease in performance as the concentration of aqueous solution increased, a significantdecrease in performance was observed for PAC and GAC. The equilibrium dataobtained for each AC was well described by the Langmuir isotherm modelcorresponding to the presence of a homogeneous surface. Amongst the three ACs, EAChad the highest maximum adsorption capacity (35 mg g-1) compared to PAC(29.4 mg g-1) and GAC (30.4 mg g-1). The adsorption kinetic data obtained for each AChad a better fit to the pseudo second-order kinetic model indicating that chemisorptionwas responsible for the sorption of PCBs onto each AC. The optimum performance ofthe three ACs was achieved at solution pH 3."],"dc:description.abstract":["In this study, GC-MS methods were developed for identifying and quantifying nineteenand five pre-selected PCB congeners in solution. The developed methods wererepeatable (≤ 4.9 %) and reproducible (≤ 7.7 %) with detection limits of1.25 - 15 ng µL-1. The extraction of PCBs from soil and water samples was achievedusing the ASE and C18 (EC) SPE methods with recoveries of 81 - 94 % and 41 - 49 %respectively. Although none of the target PCB congeners were detected in soil and watersamples collected from Lagos, Nigeria, similar recoveries were obtained from spikedsamples; indicating that the developed methods could be satisfactorily used to extractPCBs from environmental samples.The adsorption of PCBs from aqueous solutions onto activated carbons - PAC, GAC andEAC was examined using batch experiments. The removal efficiencies obtained forPAC (75 - 90 %), GAC (79 - 99 %) and EAC (60 - 74 %) indicated that each AC couldbe successfully used to remove PCBs from water. In contrast to EAC, which had a slightdecrease in performance as the concentration of aqueous solution increased, a significantdecrease in performance was observed for PAC and GAC. The equilibrium dataobtained for each AC was well described by the Langmuir isotherm modelcorresponding to the presence of a homogeneous surface. Amongst the three ACs, EAChad the highest maximum adsorption capacity (35 mg g-1) compared to PAC(29.4 mg g-1) and GAC (30.4 mg g-1). The adsorption kinetic data obtained for each AChad a better fit to the pseudo second-order kinetic model indicating that chemisorptionwas responsible for the sorption of PCBs onto each AC. The optimum performance ofthe three ACs was achieved at solution pH 3."],"dc:identifier":["T14461"],"dc:identifier.doi":["10.48730/4pv7-cv78"],"dc:identifier.uri":["https://stax.strath.ac.uk/concern/theses/j6731387r"],"dc:publisher.department":["Department of Pure and Applied Chemistry"],"dc:publisher.institution":["University of Strathclyde"],"dc:title":["Development of analytical techniques for detection and remediation of polychlorinated biphenyls in soil and water samples"],"dc:type.qualificationlevel":["doctoral-pg"],"dc:type.qualificationname":["phd"]},"updated_at":"2026-07-24T04:48:52Z"}