In-situ monitoring of phenol in surface waters by diffusive gradients in thin films technique based on the nanocomposites of zero-valent iron@biochar

2020 ◽  
Vol 735 ◽  
pp. 139553
Author(s):  
Nan You ◽  
Yang Chen ◽  
Qing-Xin Zhang ◽  
Ying Zhang ◽  
Zhuo Meng ◽  
...  
Keyword(s):  
Thin Films ◽  
Surface Waters ◽  
Zero Valent Iron ◽  
In Situ Monitoring ◽  
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.

Application of diffusive gradients in thin-films for in-situ monitoring of nitrochlorobenzene compounds in aquatic environments

2019 ◽  
Vol 157 ◽  
pp. 292-300 ◽  
Author(s):  
Delin Zhang ◽  
Yuanting Zhu ◽  
Xianchuan Xie ◽  
Chao Han ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
In Situ Monitoring ◽  
Aquatic Environments ◽  
Diffusive Gradients

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.

Activated Charcoal Based Diffusive Gradients in Thin Films for in Situ Monitoring of Bisphenols in Waters

2014 ◽  
Vol 87 (1) ◽  
pp. 801-807 ◽  
Author(s):  
Jian-Lun Zheng ◽  
Dong-Xing Guan ◽  
Jun Luo ◽  
Hao Zhang ◽  
William Davison ◽  
...  
Keyword(s):  
Thin Films ◽  
Activated Charcoal ◽  
In Situ Monitoring ◽  
Diffusive Gradients

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
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