Use my Search Websuite to scan PubMed, PMCentral, Journal Hosts and Journal Archives, FullText. Kick-your-searchterm to multiple Engines kick-your-query now !>

A dictionary by aggregated review articles of nephrology, medicine and the life sciences Your one-stop-run pathway from word to the immediate pdf of peer-reviewed on-topic knowledge.

10.1021/acs.est.5c12024 http://scihub22266oqcxt.onion/10.1021/acs.est.5c12024 41391016!?!41391016 Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=41391016&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215       Environ+Sci+Technol 2025 ; ? (?): ? Nephropedia Template TP {{tp|p=41391016|t=2025. Technetium Retention and Remobilization Potential after Prolonged Reaction in Fe(III)- and Sulfate-Reducing Model Aquifer Systems |pdf=|usr=}}{{41391016}} gab.com Text Technetium Retention and Remobilization Potential after Prolonged Reaction in Fe(III)- and Sulfate-Reducing Model Aquifer Systems JO: Environ Sci Technol http://www.kidney.de/pget.php?&tw=1&pmid=41391016 #FOAvip (99)Tc is a long-lived radioactive fission product whose subsurface mobility is governed by redox conditions. Under oxic conditions, soluble Tc(VII)O(4)(-) is mobile, whereas under reducing conditions, poorly soluble Tc(IV) phases limit transport. Microcosm studies have frequently reported TcO(2)-like solids and, less consistently, Tc(IV)-sulfides. The stability of Tc(IV)-sulfides under environmentally relevant conditions remains unclear. Here, we used flowing sediment columns representative of the Sellafield subsurface to examine Tc speciation and stability over approximately 1 year. Under reducing conditions, >90% of added TcO(4)(-) (400 mug) was retained under both Fe(III)- and sulfate-reducing conditions. X-ray absorption spectroscopy showed TcO(2)-like phases dominated in Fe(III)-reducing columns, while Tc(IV)-sulfides dominated after sustained sulfate reduction. Sequential extractions indicated that Tc in sulfidic sediments was more recalcitrant (</=23% released by weak acids) than in Fe(III)-reducing systems ( approximately 60% released). With oxic groundwater pumping, effluent Tc sourced from the sediments rose rapidly. Over 160 days, the sulfidic columns remobilized approximately 25% of their Tc inventory compared to approximately 50% in Fe(III)-reducing columns. The Tc(IV)-sulfides also gradually oxidized to form TcO(2) phases. While Tc(IV)-sulfides may enhance Tc retention under reducing conditions, TcO(2) phases more likely govern (99)Tc mobility during long-term redox cycling. Our findings provide new constraints for modeling Tc fate at contaminated sites and in radioactive waste disposal. Twit Text FOAVip Technetium Retention and Remobilization Potential after Prolonged Reaction in Fe(III)- and Sulfate-Reducing Model Aquifer Systems ????Environ Sci Technol http://www.kidney.de/pget.php?&tw=1&pmid=41391016 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=41391016 #FOAvip English Wikipedia <ref>{{Cite pmid|41391016}}</ref> Technetium Retention and Remobilization Potential after Prolonged Reaction in Fe(III)- and Sulfate-Reducing Model Aquifer Systems #MMPMID41391016 Ho MS; Vettese GF; Morris K; Lloyd JR; Boothman C; Shaw S; Dardenne K; Pearce C; Law GTW Environ Sci Technol 2025[Dec]; ? (?): ? PMID41391016show ga (99)Tc is a long-lived radioactive fission product whose subsurface mobility is governed by redox conditions. Under oxic conditions, soluble Tc(VII)O(4)(-) is mobile, whereas under reducing conditions, poorly soluble Tc(IV) phases limit transport. Microcosm studies have frequently reported TcO(2)-like solids and, less consistently, Tc(IV)-sulfides. The stability of Tc(IV)-sulfides under environmentally relevant conditions remains unclear. Here, we used flowing sediment columns representative of the Sellafield subsurface to examine Tc speciation and stability over approximately 1 year. Under reducing conditions, >90% of added TcO(4)(-) (400 mug) was retained under both Fe(III)- and sulfate-reducing conditions. X-ray absorption spectroscopy showed TcO(2)-like phases dominated in Fe(III)-reducing columns, while Tc(IV)-sulfides dominated after sustained sulfate reduction. Sequential extractions indicated that Tc in sulfidic sediments was more recalcitrant ( ?Technetium Retention and Remobilization Potential after Prolonged Reac(epmc).pdf DeepDyve Pubget Overpricing