Insights in groundwater organic matter from liquid chromatography-organic carbon detection

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dc.contributor.authorRutlidge, Hen_AU
dc.contributor.authorOudone, PPen_AU
dc.contributor.authorMcDonough, LKen_AU
dc.contributor.authorAndersen, MSen_AU
dc.contributor.authorBaker, AAen_AU
dc.contributor.authorMeredith, KTen_AU
dc.contributor.authorO'Carroll, DMen_AU
dc.date.accessioned2023-01-19T04:56:57Zen_AU
dc.date.available2023-01-19T04:56:57Zen_AU
dc.date.issued2017-12-14en_AU
dc.date.statistics2022-11-28en_AU
dc.description.abstractUnderstanding the processes that control the concentration and characteristics of organic matter in groundwater has important implications for the terrestrial global carbon budget. Liquid Chromatography – Organic Carbon Detection (LC-OCD) is a size-exclusion based chromatography technique that separates the organic carbon into molecular weight size fractions of biopolymers, humic substances, building blocks (degradation products of humic substances), low molecular weight acids and low molecular weight neutrals. Groundwater and surface water samples were collected from a range of locations in Australia representing different surface soil, land cover, recharge type and hydrological properties. At one site hyporheic zone samples were also collected from beneath a stream. The results showed a general decrease in the aromaticity and molecular weight indices going from surface water, hyporheic downwelling and groundwater samples. The aquifer substrate also affected the organic composition. For example, groundwater samples collected from a zone of fractured rock showed a relative decrease in the proportion of humic substances, suggestive of sorption or degradation of humic substances. This work demonstrates the potential for using LC-OCD in elucidating the processes that control the concentration and characteristics of organic matter in groundwater.en_AU
dc.identifier.articlenumberB42B-06)en_AU
dc.identifier.booktitleAGU Fall Meeting Abstractsen_AU
dc.identifier.citationRutlidge, H., Oudone, P., McDonough, L., Andersen, M. S., Baker, A., Meredith, K., & O'Carroll, D. M. (2017). Insights in groundwater organic matter from liquid chromatography-organic carbon detection. Poster presented at the AGU Fall Meeting, 2017, New Orleans, Louisiana, USA, 11-15 December 2017. In AGU Fall Meeting Abstracts (Vol. 2017, B42B-06). Retrieved from: https://agu.confex.com/agu/fm17/meetingapp.cgi/Paper/248451en_AU
dc.identifier.conferenceenddate15 December 2017en_AU
dc.identifier.conferencenameAGU Fall Meeting, 2017en_AU
dc.identifier.conferenceplaceNew Orleans, Louisiana, USAen_AU
dc.identifier.conferencestartdate11 December 2017en_AU
dc.identifier.urihttps://agu.confex.com/agu/fm17/meetingapp.cgi/Paper/248451en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14408en_AU
dc.identifier.volume2017en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Union (AGU)en_AU
dc.subjectGround wateren_AU
dc.subjectAquifersen_AU
dc.subjectCarbonen_AU
dc.subjectChromatographyen_AU
dc.subjectSurface watersen_AU
dc.subjectSorptionen_AU
dc.titleInsights in groundwater organic matter from liquid chromatography-organic carbon detectionen_AU
dc.typeConference Posteren_AU
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