Selective extraction of light polycyclic aromatic hydrocarbons in environmental water samples with pseudo-template thin-film molecularly imprinted polymers

2015 ◽  
Vol 7 (5) ◽  
pp. 2028-2035 ◽  
Author(s):  
Stefana N. Egli ◽  
Erika Dianne Butler ◽  
Christina S. Bottaro

Fast, low-tech fabrication of thin-film MIPs. Toluene pseudo-template MIP to uptake PAHs in distilled water, seawater and wastewater.

2021 ◽  
Vol 50 (1) ◽  
pp. 123-133
Author(s):  
Siti Nurul Umira Mohd Sabari ◽  
Saw Hong Loh ◽  
Sazlinda Kamaruzaman ◽  
Noorfatimah Yahaya ◽  
Wan Mohd Afiq Wan Mohd Khalik

Sample pre-treatment is often the bottleneck in an analytical process. Due to the drawbacks of conventional sample pre-treatment methods, microextraction utilizing lower amounts of adsorbents and organic solvents are therefore favoured. A micro-solid phase extraction (μ-SPE) technique coupled with gas chromatography-flame ionization detection (GC-FID) was successfully developed for the analysis of selected polycyclic aromatic hydrocarbons (PA Hs), namely phenanthrene, fluoranthene, and pyrene, in environmental water. In this study, μ-SPE techniques using C18 and molecularly imprinted polymer (MIP) membranes were optimized, validated, and applied to the analysis of selected PA Hs in environmental water samples. The analytical merits were compared, and the two methods were evaluated in terms of linearity, repeatability, and relative recovery. Under the optimal extraction conditions, both μ-SPE techniques using either C18 or MIP membranes as the adsorbents offered comparable ultratrace analysis of the selected PA Hs in the range of 0.003 to 0.01 μg L–1. The extraction strength of C18 membranes was superior to that of MIP membranes for the extraction of low molecular weights PA Hs from water in the presence of humic acid as a matrix factor. The C18membranes overcome the non-covalence interaction between PA Hs and humic acid and thus achieve better recovery.


Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 594
Author(s):  
Xuqin Song ◽  
Esther Turiel ◽  
Limin He ◽  
Antonio Martín-Esteban

The authors wish to make a change to the published paper [...]


RSC Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 2659-2662 ◽  
Author(s):  
Wenchao Wei ◽  
Rongning Liang ◽  
Zhuo Wang ◽  
Wei Qin

A hydrophilic molecularly imprinted polymer (H-MIP) for phenanthrene has been synthesized with higher selectivity in aqueous solution than the traditional MIP.


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