High-resolution measurement and mapping of tungstate in waters, soils and sediments using the low-disturbance DGT sampling technique

Abstract

This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits distribution and reproduction for non-commercial purposes, provided the author and source are cited. General rightsCopyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights.Take down policy The Research Portal is Queen's institutional repository that provides access to Queen's research output. Every effort has been made to ensure that content in the Research Portal does not infringe any person's rights, or applicable UK laws. If you discover content in the Research Portal that you believe breaches copyright or violates any law, please contact openaccess@qub.ac.uk. high-resolution W profiling across sedimentwater and hotspotbulk media interfaces from Lake Taihu was obtained using PZ DGT coupled with laser ablation ICPMS measurement, and the apparent diffusion fluxes across the interfaces were calculated using a numerical model. KEY WORDS: diffusive gradients in thin-films (DGT); tungsten; precipitated zirconia (PZ) gel; sub-mm high resolution; hotspotbulk media interface.

In situ sampling and speciation method for measuring dissolved phosphite at ultratrace concentrations in the natural environment

“…Furthermore, PZ-DGT was originally developed for measuring various oxyanions including P +V and As +V simultaneously owing to its high capacity. 28,43 Combined to a routine procedure, 47 there is the possibility of using this method for simultaneously capturing the co-distributions of P +III and P +V , which is particularly important in helping to elucidate the complexity of P speciation and biogeochemistry in soil and aqueous environments.…”

A diffusive gradients in thin-films technique for the assessment of bisphenols desorption from soils

“…These drawbacks can be overcome by using the in situ approach of diffusive gradients in thin-films (DGT). DGT is recognized as a useful tool for advancing the understanding of mobility, availability and lability of chemicals in soils and sediments while minimally disturbing soil/sediment structure [25][26][27][28].…”

Diffusive gradients in thin films: devices, materials and applications

“…Dryland soil must be moisturized prior to DGT deployment, but the water content has not been standardized in the literature (Kalkhajeh et al 2018;Luo et al 2014). Some researchers adjusted the water content at a high level (over 90% of the maximum water holding capacity) (Guan et al 2016;Gao et al 2017;Kalkhajeh et al 2018;Zhang et al 2004). This may result in anoxic condition in soils and cause the bias of the measurement from the field.…”