A novel Mg(OH)2 binding layer-based DGT technique for measuring phosphorus in water and sediment

2020 ◽  
Vol 22 (2) ◽  
pp. 340-349
Author(s):  
Fazhi Xie ◽  
Lu Li ◽  
Xiaoyan Sun ◽  
Tingting Hu ◽  
Kang Song ◽  
...  
Keyword(s):  
Thin Films ◽  
Natural Water ◽  
Phosphorus Species ◽  
Water And Sediment ◽  
Reactive Phosphorus ◽  
Diffusive Gradients

Diffusive gradients in thin films (DGT) have gained wide attention for in situ measurement of reactive phosphorus species (PO4) in natural water, sediments and potentially soils.

In situ measurement of perfluoroalkyl substances in aquatic systems using diffusive gradients in thin-films technique

2018 ◽  
Vol 144 ◽  
pp. 162-171 ◽  
Author(s):  
Dong-Xing Guan ◽  
Ya-Qing Li ◽  
Nan-Yang Yu ◽  
Guang-Hui Yu ◽  
Si Wei ◽  
...  
Keyword(s):  
Thin Films ◽  
In Situ Measurement ◽  
Aquatic Systems ◽  
Perfluoroalkyl Substances ◽  
Diffusive Gradients

scholarly journals Diffusive gradients in thin-films (DGT) for in situ sampling of selected endocrine disrupting chemicals (EDCs) in waters

2018 ◽  
Vol 137 ◽  
pp. 211-219 ◽  
Author(s):  
Wei Chen ◽  
Suhong Pan ◽  
Hao Cheng ◽  
Andrew J. Sweetman ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting ◽  
Diffusive Gradients

scholarly journals In Situ Measurement of Thallium in Natural Waters by a Technique Based on Diffusive Gradients in Thin Films Containing a δ-MnO2 Gel Layer

2018 ◽  
Vol 91 (2) ◽  
pp. 1344-1352 ◽  
Author(s):  
Hongmei Deng ◽  
Mengting Luo ◽  
Xinyao Shi ◽  
Paul N. Williams ◽  
Kexin Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Natural Waters ◽  
In Situ Measurement ◽  
Gel Layer ◽  
Diffusive Gradients

scholarly journals A new method based on diffusive gradients in thin films for in situ monitoring microcystin-LR in waters

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Lei Yao ◽  
Alan D. Steinman ◽  
Xiang Wan ◽  
Xiubo Shu ◽  
Liqiang Xie
Keyword(s):  
Thin Films ◽  
Passive Sampling ◽  
Sampling Method ◽  
Binding Capacity ◽  
Accurate Method ◽  
In Situ Monitoring ◽  
Active Sampling ◽  
Binding Agent ◽  
Diffusive Gradients

AbstractThe passive sampling method of diffusive gradients in thin-films (DGT) was developed to provide a quantitative and time-integrated measurement of microcystin-LR (MC-LR) in waters. The DGT method in this study used HLB (hydrophilic-lipophilic-balanced) material as a binding agent, and methanol as an eluent. The diffusion coefficient of MC-LR was 5.01 × 10−6 cm2 s−1 at 25 °C in 0.45 mm thick diffusion layer. This DGT method had a binding capacity of 4.24 μg per binding gel disk (3.14 cm2), ensuring sufficient capacity to measure MC-LR in most water matrices. The detection limit of HLB DGT was 0.48 ng L−1. DGT coupled to analysis by HPLC appears to be an accurate method for MC-LR monitoring. Comparison of DGT measurements for MC-LR in water and a conventional active sampling method showed little difference. This study demonstrates that HLB-based DGT is a useful tool for in situ monitoring of MC-LR in fresh waters.

Field Evaluation and in Situ Stress Testing of the Organic-Diffusive Gradients in Thin-Films Passive Sampler

2018 ◽  
Vol 52 (21) ◽  
pp. 12573-12582 ◽  
Author(s):  
Jonathan K. Challis ◽  
Kevin M. Stroski ◽  
Kim H. Luong ◽  
Mark L. Hanson ◽  
Charles S. Wong
Keyword(s):  
Thin Films ◽  
Stress Testing ◽  
Field Evaluation ◽  
In Situ Stress ◽  
Passive Sampler ◽  
Diffusive Gradients
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