{"refrec":{"BRefID":311529,"RR":"<b>Zhou, C.; van de Velde, S.; Baeyens, W.; Gao, Y.</b> (2018). Comparison of Chelex based resins in diffusive gradients in thin-film for high resolution assessment of metals. <i>Talanta 186</i>: 397-405. <a href=\"https://dx.doi.org/10.1016/j.talanta.2018.04.085\" target=\"_blank\">https://dx.doi.org/10.1016/j.talanta.2018.04.085</a>","BEntID":303892,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Talanta 186</i>: 397-405. <a href=\"https://dx.doi.org/10.1016/j.talanta.2018.04.085\" target=\"_blank\">https://dx.doi.org/10.1016/j.talanta.2018.04.085</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Zhou, C.; van de Velde, S.; Baeyens, W.; Gao, Y.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Zhou, C. <i>et al.</i>","Englishabstract":"The passive sampling technique of diffusive gradients in thin-film (DGT) is widely used to determine 1D profiles (using Chelex-100 resin) and 2D images (using suspended particulate reagent-iminodiacetate resin, abbreviated as SPR-IDA resin) of metals in sediment pore waters and in oxic/anoxic soils. However, when deployed in anoxic sediments with high metal concentrations, Fe and Mn concentrations determined with the Chelex-100 resin gel were similar to 5 times higher than concentrations measured with the SPR-IDA resin gel. This discrepancy suggests that the SPR-IDA resin gel is saturated faster than the Chelex-100 resin gel. Here, we tested the adsorption capacity of the SPR-IDA resin gel and compared it to the Chelex-100 resin gel. Fe and Mn binding capacities on a SPR-IDA gel disc are less than 0.1 mu moles, which means that they are far below those on a Chelex-100 gel disc (around 3.2 mu moles), while competition with stronger binding metals such as Cu and Cd further lowers Fe and Mn capacities. This restricts the SPR-IDA resin gel to be used in contaminated marine sediments. We propose the use of a ground Chelex-100 resin, which is prepared by grinding Chelex-100 resin in a ball-mill prior to gel preparation. The capacities of Fe and Mn on a ground Chelex-100 resin gel disc are around 1.6 mu moles, more than 16 times higher than the capacity on SPR-IDA gel disc. In addition, the bead size of the ground Chelex-100 resin is small enough (similar to 10 mu m) to allow high resolution LA-ICP-MS imaging of Fe, Mn and trace metals in sediment pore waters as well as soils.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Comparison of Chelex based resins in diffusive gradients in thin-film for high resolution assessment of metals","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":"Diffusive gradients in thin-film (DGT); Chelex-100; SPR-IDA; Capacity;Ground Chelex-100; High resolution","OtherDescriptors":null,"Notes":null,"AnaPub":2018,"MonPub":null,"DateUpdate":"2019-06-06","DateCreate":"2019-05-28","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000435048800054","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.talanta.2018.04.085"},"refs":null,"anarec":{"AnaID":311529,"PubliDate":2018,"Pagination":"397-405","XtraPublOfAnaID":null,"ISBN":null,"Volume":"186","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43951,"SerRR":"Talanta. 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ISSN 0039-9140; e-ISSN 1873-3573","StandardTitleSer":"Talanta","ISSN":"0039-9140","AbbrevSer":"Talanta","StandardTitleMon":null,"StartPage":397,"Pages":9,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Zhou","Firstname":"Chunyang","Initials":"C.","Affiliation":"Analytical, Environmental and Geochemistry (AMGC), Vrije Universiteit Brussel (VUB)","Discriminator":null,"CorporateFlag":0,"BEntID":303892,"AutID":378959,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"AMGC","InsFSN":"Vrije Universiteit Brussel; Faculteit Wetenschappen & Bio-ingenieurswetenschappen; Vakgroep Chemie; Analytical, Environmental and Geochemistry","ORCID":null,"PersID":37757,"InsID":40},{"AutName":"van de Velde","Firstname":"Sebastiaan","Initials":"S.","Affiliation":"Analytical, Environmental and Geochemistry (AMGC), Vrije Universiteit Brussel (VUB)","Discriminator":null,"CorporateFlag":0,"BEntID":303892,"AutID":378960,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"AMGC","InsFSN":"Vrije Universiteit Brussel; 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