NDLI: The Simultaneous Measurement of Phosphorus, Sulfide, and Trace Metals by Ferrihydrite/AgI/Chelex-100 DGT (Diffusive Gradients in Thin Films) Probe at Sediment/Water Interface (SWI) and Remobilization Assessment

Content Provider	Springer Nature Link
Author	Wu, Zhihao Wang, Shengrui Jiao, Lixin Wu, Fengchang
Copyright Year	2014
Abstract	A new type of ferrihydrite/AgI/Chelex-100 DGT (diffusive gradients in thin films) probe was developed for simultaneous determination of three kinds of pollutants with a high resolution at exactly the same location of the SWI (sediment/water interface) of Dianchi Lake. Sediment porewater profiles (DGT concentration/flux) of eight metals and labile P at the SWI were measured by DGT and an HR-ICP-MS (high-resolution inductively coupled plasma mass spectrometry) instrument with a spatial resolution of 2 mm. Based on the DGT-CID (computer imaging densitometry) technique, the S(−II) (sulfide) profile and grayscale image with a spatial resolution of 0.0423 mm were obtained. By the investigation of sediment porewater profiles of labile metals, P, and S(−II), the remobilization feature (Fe/Mn reduction and co-release of pollutants) and “internal P loading” character were identified and assessed. The assessment of the scanned AgI gel indicated microniche peak fluxes and the distribution character of sulfide microniches in sediment.
Starting Page	1
Ending Page	17
Page Count	17
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	225
Issue Number	11
e-ISSN	15732932
Language	English
Publisher	Springer International Publishing
Publisher Date	2014-10-16
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ferrihydrite/AgI/Chelex-100 DGT (diffusive gradients in thin films) SWI (sediment/water interface) Remobilization CID (computer imaging densitometry) Environment Water Quality/Water Pollution Atmospheric Protection/Air Quality Control/Air Pollution Soil Science & Conservation Hydrogeology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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