{"refrec":{"BRefID":245312,"RR":"<b>Kraal, P.; Bostick, B.C.; Behrends, T.; Reichart, G.J.; Slomp, C.P.</b> (2015). Characterization of phosphorus species in sediments from the Arabian Sea oxygen minimum zone: Combining sequential extractions and X-ray spectroscopy. <i>Mar. Chem. 168</i>: 1-8. <a href=\"http://dx.doi.org/10.1016/j.marchem.2014.10.009\" target=\"_blank\">dx.doi.org/10.1016/j.marchem.2014.10.009</a>","BEntID":236997,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Mar. Chem. 168</i>: 1-8. <a href=\"https://dx.doi.org/10.1016/j.marchem.2014.10.009\" target=\"_blank\">https://dx.doi.org/10.1016/j.marchem.2014.10.009</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kraal, P.; Bostick, B.C.; Behrends, T.; Reichart, G.J.; Slomp, C.P.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kraal, P. <i>et al.</i>","Englishabstract":"The bulk phosphorus (P) distribution in sediment samples from the oxygen minimum zone of the northern Arabian Sea was determined using two methods: sequential chemical extraction (the ‘SEDEX’ procedure) and X-ray absorption near-edge structure (XANES) spectroscopy of the phosphorus K-edge. Our results show good agreement between iron (Fe-)associated P and calcium phosphate minerals (Ca-P) determined by both methods. Furthermore, we find that SEDEX exchangeable P likely represents loosely Fe-bound P, and that the SEDEX detrital fraction may consist partly of polyphosphate, i.e. microbially synthesized intracellular phosphate. Below productive waters with relatively high sedimentary organic matter and P contents, polyphosphates may represent an important P sink that is not easily identified by chemical sequential extraction. This study highlights the value of SEDEX as a generally accurate and fast P speciation technique (especially for Fe- and Ca-P) and, for the first time, demonstrates the possibilities of P K-edge XANES as a bulk P speciation tool for marine sediments.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Characterization of phosphorus species in sediments from the Arabian Sea oxygen minimum zone: Combining sequential extractions and X-ray spectroscopy","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"    Phosphorus speciation;     Marine sediments;     Sequential extraction;     SEDEX;     X-ray absorption spectroscopy","OtherDescriptors":null,"Notes":null,"AnaPub":2015,"MonPub":null,"DateUpdate":"2015-08-26","DateCreate":"2015-03-05","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000348256300001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.marchem.2014.10.009"},"refs":null,"anarec":{"AnaID":245312,"PubliDate":2015,"Pagination":"1-8","XtraPublOfAnaID":null,"ISBN":null,"Volume":"168","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43353,"SerRR":"Marine Chemistry. 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