NDLI: Evaluation of the diffusive gradients in thin films technique using a mixed binding gel for measuring iron, phosphorus and arsenic in the environment.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Sun, Qin Zhang, Liping Ding, Shiming Li, Chao Yang, Jinyan Chen, Jing Wang, Peifang
Description	Country affiliation: China Author Affiliation: Sun Q ( Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.)
Abstract	Simultaneous measurements of dissolved iron (Fe), phosphorus (P), and arsenic (As) were made using the diffusive gradients in thin films technique equipped with a mixed binding gel impregnated with zirconium oxide and Chelex-100 (ZrO-Chelex DGT). The ZrO-Chelex binding gel exhibited rapid binding dynamics to Fe(II), P(PO4(3-)), and As(III)/As(V) in mixed solutions of the three elements. The bound Fe, P, and As could be quantitatively recovered using an established four-step elution procedure. Simultaneous measurements of the three elements with ZrO-Chelex DGT were validated through time-series experiments, and there was no influence of pH (4.1 to 7.1) and ionic strength (0.01 to 800 mM). The DGT capacities for As(III) and As(V) were 69.0 µg and 186 µg per device, respectively, which were much greater than those of the widely used ferrihydrite DGT. Applications in synthesized freshwaters and in sediments further confirmed its feasibility in simultaneous measurements in the environment. The present study offered that the ZrO-Chelex DGT will be a useful tool in in situ monitoring of Fe-P-As and assessment of their interactions in the biogeochemical processes.
File Format	HTM / HTML
ISSN	20507887
Issue Number	3
Volume Number	17
e-ISSN	20507895
Journal	Environmental Science: Processes & Impacts
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2015-03-01
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Discipline Environmental Health Arsenic Analysis Environmental Monitoring Methods Iron Phosphorus Water Pollutants, Chemical Ferric Compounds Fresh Water Chemistry Osmolar Concentration Resins, Synthetic Zirconium Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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