FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W856061925> ?p ?o ?g. }

• W856061925 abstract "Over a hundred million people across the globe, and particularly in Asia, are chronicallyexposed to high concentrations (>10 ppb) of geogenic arsenic (As) in shallow reducinggroundwaters utilised as drinking water. It is widely accepted that As mobilisation fromsediments into these groundwater requires active metal-reducing microbes and electrondonors such as organic matter (OM). Although OM have been characterised in fewaquifers, there is a dearth of data on other As rich aquifers.In this work, we further investigate the correlation between As release from aquifers andthe OM/microbial communities present. The key findings of this work are:i. OM in Vietnamese and Taiwanese As hotspot areas originates from multiple sources.This is comparable to previous studies in Cambodia and West Bengal, indicating thatOM originates from similar sources in all the areas studied up to date, regardless ofthe age (Holocene/Pleistocene) and the sediment source (Himalayas/non-Himalayas).This suggests that similar electron donors, such as petroleum derived HMW nalkanes,are present in all these groundwater aquifer sediments.ii. No noticeable differences in OM biomarker distribution patterns were observedbetween sediments from two contrasting groundwater As concentration sites (e.g. <10 ppb; Pleistocene and up to 600 ppb; Holocene) in Vietnam, suggesting thatarsenic mobilisation is not associated with a specific OM source at these sites. Inaddition, no microbial activity was determined in these two sites suggesting thatother abiotic factors could lead to As release.iii. Microbiological process of dissimilatory As(V) reduction is active in microcosmexperiments using non-Himalayan Taiwanese sediments, despite low groundwaterAs concentrations, causing the release of As into the groundwater. However, Asrelease in these sediment slurries is not controlled by a specific source of the lipidderived OM, suggesting that other electron donors, not analysed in present studycould be contributing/controlling the rate of As release; and/or that multiple fractionsof the lipid derived OM are used as electron donors in this process.iv. Artificial maturation experiments indicated that a fully 13C-lablled kerogen analoguecan be obtained by using 13C-labelled cyanobacteria biomass as a starting material.However, this kerogen analogue had some differences when compared to the naturalmaterial, suggesting that an artificial degradation precursor step, prior to the actualmaturation process, might be required to generate analogues that better resemble thenatural kerogen.v. 13C-labelled substrates (hexadecane and kerogen) incubation experiments revealedthat As(III) release in all microcosms was microbially driven. Very low 13C-n-alkaneincorporation was observed in association with As release, suggesting that otherelectron donors could be mediating this process. In contrast, kerogen did not haveany effect on As release. Moreover, As(V) amendments enhanced the degradation ofthe shorter carbon chain length n-alkanes more than the longer ones, suggesting thatthese are more important electron donors in the process of As release than the longerones." @default.
• W856061925 created "2016-06-24" @default.
• W856061925 creator A5055208602 @default.
• W856061925 creator A5077795771 @default.
• W856061925 date "2012-08-17" @default.
• W856061925 modified "2023-09-28" @default.
• W856061925 title "The role of organics in the mobilization of arsenic in shallow aquifers" @default.
• W856061925 hasPublicationYear "2012" @default.
• W856061925 type Work @default.
• W856061925 sameAs 856061925 @default.
• W856061925 citedByCount "0" @default.
• W856061925 crossrefType "dissertation" @default.
• W856061925 hasAuthorship W856061925A5055208602 @default.
• W856061925 hasAuthorship W856061925A5077795771 @default.
• W856061925 hasConcept C107872376 @default.
• W856061925 hasConcept C111368507 @default.
• W856061925 hasConcept C114793014 @default.
• W856061925 hasConcept C127313418 @default.
• W856061925 hasConcept C132215390 @default.
• W856061925 hasConcept C140345934 @default.
• W856061925 hasConcept C151730666 @default.
• W856061925 hasConcept C17409809 @default.
• W856061925 hasConcept C178790620 @default.
• W856061925 hasConcept C185592680 @default.
• W856061925 hasConcept C187320778 @default.
• W856061925 hasConcept C18903297 @default.
• W856061925 hasConcept C2816523 @default.
• W856061925 hasConcept C39432304 @default.
• W856061925 hasConcept C48743137 @default.
• W856061925 hasConcept C502230775 @default.
• W856061925 hasConcept C53570757 @default.
• W856061925 hasConcept C75622301 @default.
• W856061925 hasConcept C76177295 @default.
• W856061925 hasConcept C86803240 @default.
• W856061925 hasConceptScore W856061925C107872376 @default.
• W856061925 hasConceptScore W856061925C111368507 @default.
• W856061925 hasConceptScore W856061925C114793014 @default.
• W856061925 hasConceptScore W856061925C127313418 @default.
• W856061925 hasConceptScore W856061925C132215390 @default.
• W856061925 hasConceptScore W856061925C140345934 @default.
• W856061925 hasConceptScore W856061925C151730666 @default.
• W856061925 hasConceptScore W856061925C17409809 @default.
• W856061925 hasConceptScore W856061925C178790620 @default.
• W856061925 hasConceptScore W856061925C185592680 @default.
• W856061925 hasConceptScore W856061925C187320778 @default.
• W856061925 hasConceptScore W856061925C18903297 @default.
• W856061925 hasConceptScore W856061925C2816523 @default.
• W856061925 hasConceptScore W856061925C39432304 @default.
• W856061925 hasConceptScore W856061925C48743137 @default.
• W856061925 hasConceptScore W856061925C502230775 @default.
• W856061925 hasConceptScore W856061925C53570757 @default.
• W856061925 hasConceptScore W856061925C75622301 @default.
• W856061925 hasConceptScore W856061925C76177295 @default.
• W856061925 hasConceptScore W856061925C86803240 @default.
• W856061925 hasLocation W8560619251 @default.
• W856061925 hasOpenAccess W856061925 @default.
• W856061925 hasPrimaryLocation W8560619251 @default.
• W856061925 hasRelatedWork W1583489166 @default.
• W856061925 hasRelatedWork W1777307219 @default.
• W856061925 hasRelatedWork W2050370465 @default.
• W856061925 hasRelatedWork W2056541363 @default.
• W856061925 hasRelatedWork W2057925734 @default.
• W856061925 hasRelatedWork W2097274728 @default.
• W856061925 hasRelatedWork W2145670353 @default.
• W856061925 hasRelatedWork W2165728721 @default.
• W856061925 hasRelatedWork W2461701788 @default.
• W856061925 hasRelatedWork W2670730318 @default.
• W856061925 hasRelatedWork W2735182719 @default.
• W856061925 hasRelatedWork W2769556065 @default.
• W856061925 hasRelatedWork W2799300411 @default.
• W856061925 hasRelatedWork W2804174302 @default.
• W856061925 hasRelatedWork W2828301687 @default.
• W856061925 hasRelatedWork W2907746665 @default.
• W856061925 hasRelatedWork W2947574879 @default.
• W856061925 hasRelatedWork W2969792695 @default.
• W856061925 hasRelatedWork W306980014 @default.
• W856061925 hasRelatedWork W368566185 @default.
• W856061925 isParatext "false" @default.
• W856061925 isRetracted "false" @default.
• W856061925 magId "856061925" @default.
• W856061925 workType "dissertation" @default.