Graphene-based molecularly imprinted polymer for separation and pre-concentration of trace polycyclic aromatic hydrocarbons in environmental water samples

2017 ◽  
Vol 134 (37) ◽  
pp. 45300 ◽  
Author(s):  
Rose Waithiegeni Kibechu ◽  
Srinivasan Sampath ◽  
Bhekie Brilliance Mamba ◽  
Titus Alfred Makudali Msagati
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Molecularly Imprinted Polymer ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Polycyclic Aromatic

The headspace solid-phase microextraction of polycyclic aromatic hydrocarbons in environmental water samples using silica fiber modified by self assembled gold nanoparticles

2015 ◽  
Vol 7 (19) ◽  
pp. 8086-8093 ◽  
Author(s):  
Fahimeh Zare ◽  
Mehrorang Ghaedi ◽  
Ali Daneshfar
Keyword(s):  
Gold Nanoparticles ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Water Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Headspace Solid Phase Microextraction ◽  
Polycyclic Aromatic

The headspace solid phase microextraction method with modified silica fibers prepared based on self assembled gold nanoparticles and the sol–gel method is described for the determination of trace amounts of polycyclic aromatic hydrocarbons in environmental water samples..

scholarly journals Micro-Solid Phase Extraction of Polycyclic Aromatic Hydrocarbons in Water using either C18 or Molecularly Imprinted Polymer Membranes: Analytical Merits and Limitations

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
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Humic Acid ◽  
Aromatic Hydrocarbons ◽  
Solid Phase ◽  
Environmental Water ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Polycyclic Aromatic ◽  
Pre Treatment

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.

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