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250731s2025 xx |||||o 00| ||eng c |
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|a 10.2166/wst.2025.107
|2 doi
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|a pubmed25n1514.xml
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|a (DE-627)NLM390347124
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|a (NLM)40739822
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|a DE-627
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|a eng
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|a Yu, Shaobo
|e verfasserin
|4 aut
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|a An improved method for phosphate oxygen isotope analysis in water using zirconium-loaded resin enrichment
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|c 2025
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 31.07.2025
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|a Date Revised 31.07.2025
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2025 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY-NC 4.0), which permits copying, adaptation and redistribution for non-commercial purposes, provided the original work is properly cited (http://creativecommons.org/licenses/by-nc/4.0/).
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|a The phosphate oxygen isotope (δ18OP) tracing analysis method is crucial for identifying the sources of phosphorus pollution in water bodies. However, existing methods face challenges in areas such as presample collection, which demands substantial water volumes, as well as in processing, separation, and purification. This study developed a new δ18OP testing method using zirconium (Zr)-loaded resin for in situ enrichment, elution, and purification (ZR-ISEEP). The Zr-IRC748 resin, made by loading Amberlite IRC-748 with Zr, shows phosphate adsorption behavior consistent with the Freundlich isotherm (R2 = 0.98) and the pseudo-second-order kinetic model (R2 = 0.99). In addition, its phosphate adsorption is not significantly affected by common water anions (Cl-, F-, NO3-, and SO42-). The addition of same phosphorus source, X-ray diffraction analysis, and comparison with the conventional method confirm that the ZR-ISEEP method produces high-purity Ag3PO4 without significant isotope fractionation, verifying its feasibility. Furthermore, in a river with phosphate concentrations of 0.047-0.056 mg/L, using 100 mL of resin for 4 days' enrichment, yielded high-purity Ag3PO4. No significant differences were observed between instantaneous sampling and ZR-ISEEP method results (P > 0.05). These findings offer a new approach for δ18OP monitoring in water bodies, providing a solid foundation for future studies
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|a Journal Article
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|a Amberlite IRC-748 resin
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|a phosphate oxygen isotope
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|a phosphorus
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|a zirconium oxychloride octahydrate
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|a Zirconium
|2 NLM
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|a C6V6S92N3C
|2 NLM
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|a Phosphates
|2 NLM
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|a Oxygen Isotopes
|2 NLM
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| 650 |
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|a Water Pollutants, Chemical
|2 NLM
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| 700 |
1 |
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|a Meng, Cen
|e verfasserin
|4 aut
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1 |
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|a Liao, Liren
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Yuyuan
|e verfasserin
|4 aut
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1 |
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|a Yuan, Hongzhao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Xianli
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 92(2025), 2 vom: 31. Juli, Seite 235-250
|w (DE-627)NLM098149431
|x 0273-1223
|7 nnas
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| 773 |
1 |
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|g volume:92
|g year:2025
|g number:2
|g day:31
|g month:07
|g pages:235-250
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|u http://dx.doi.org/10.2166/wst.2025.107
|3 Volltext
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|h 235-250
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