scholarly journals In situ speciation of dissolved inorganic antimony in surface waters and sediment porewaters: development of a thiol-based diffusive gradients in thin films technique for SbIII

2016 ◽  
Vol 18 (8) ◽  
pp. 992-998 ◽  
Author(s):  
William W. Bennett ◽  
Maja Arsic ◽  
David T. Welsh ◽  
Peter R. Teasdale
Keyword(s):  
Thin Films ◽  
Surface Waters ◽  
Sampling Method ◽  
Sediment Porewaters ◽  
Diffusive Gradients

A new in situ sampling method enables the selective measurement of Sb(iii) in surface waters and sediment porewaters.

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.

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

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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