Preparation of new solid phase micro extraction fiber on the basis of atrazine-molecular imprinted polymer: Application for GC and GC/MS screening of triazine herbicides in water, rice and onion

Djozan, Djavanshir; Ebrahimi, Bahram

doi:10.1016/j.aca.2008.04.037

Cited by 181 publications

(83 citation statements)

References 38 publications

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“…Koeber et al were able to detect triazine herbicides in river samples with a detection limit of 3.3 9 10 -10 mol/L for simazine by combining column size exclusion and adsorption chromatography [31]. Djozan et al reported detection of s-triazine herbicides in tap water with detection limit of 8.29 9 10 -8 mol/L using gas chromatography [37]. Electrochemical techniques have also been applied to detect herbicides in solutions, foods, and real samples.…”

Section: Probing Trace Levels Of Prometryn In Deionized and Tap Watermentioning

confidence: 99%

Probing trace levels of prometryn solutions: from test samples in the lab toward real samples with tap water

et al. 2015

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Growing food demand has been addressed by protecting crops from insects, weeds, and other organisms by increasing the application of pesticides, thus increasing the risk of environmental contamination. Many pesticides, such as the triazines, are poorly soluble in water and require trace detection methods, which are normally achieved with high-cost sophisticated chromatography techniques. Here, we combine surface-enhanced Raman scattering (SERS) with multidimensional projection techniques to detect the toxic herbicide prometryn in ultrapure, deionized, and tap waters. The SERS spectra for prometryn were recorded with good signal-to-noise ratio down to 5 9 10 -12 mol/L in ultrapure water, approaching singlemolecule levels, and 5 9 10 -9 mol/L in tap water. The latter is one order of magnitude below the threshold allowed for drinking water. In addition to providing a fingerprint of prometryn molecules at low concentrations, SERS is advantageous compared to other methods since it does not require pretreatment or chemical separation. The multidimensional projection methods and the detection procedure with SERS are entirely generic, and may be extended to any other pesticide or water contaminants, thus allowing environmental control to be potentially low cost if portable Raman spectrophotometers are used.

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Section: Probing Trace Levels Of Prometryn In Deionized and Tap Watermentioning

confidence: 99%

Probing trace levels of prometryn solutions: from test samples in the lab toward real samples with tap water

et al. 2015

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“…Other techniques that have been proposed are TLC [6,7] and GC with flame photometry or MS [5,8]. As well as the above methods, other studies based on multiresidue analysis of different pesticides, in which one or more triazines were included, have been published.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic solvent extraction and nonaqueous CE for the determination of herbicide residues in potatoes

Rodríguez‐Gonzalo

Carabias‐Martínez

Cruz

et al. 2009

J of Separation Science

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In the present work we address the development of a simple and effective method for the determination of triazine herbicide residues in horticultural products by CE in nonaqueous media (NACE). Potato samples were selected as a representative matrix of such foods with a nonfatty content. Isolation of the analytes from the sample matrix was accomplished by extraction with organic solvents, assisted by ultrasound; a clean-up step of the organic extracts was carried out with SPE, using an Oasis MCXm sorbent to retain the analytes directly from the organic medium. The detection limits achieved in spiked potatoes (1.7 -4.0 lg/kg) were lower than the default value of maximum residue level (MRL) established by current EU legislation for pesticide residues in foodstuffs. The results obtained were compared with HPLC in order to evaluate the performance of the NACE procedure.

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“…MIPs can be obtained in the format of particles, coatings, monolayers of selective compounds bound to the surface of support, monolithic packings or fibers (Oxelbark et al 2007). A fast and straightforward method for preparation and binding study of solid phase microextraction (SPME) fiber on the basis of atrazine-and ametryn-imprinted polymers has been proposed (Djozan & Ebrahimi, 2008;Djozan et al, 2009). The fabricated fibers were thermally and chemically stable and flexible enough to be placed in home-made SPME syringe and to be inserted directly into GC injection port.…”

Section: Fig 2 Schematic Representation Of Molecular Imprinting Primentioning

confidence: 99%

Solid-Phase Extraction for Enrichment and Separation of Herbicides

Pyrzyńska¹

2011

Herbicides, Theory and Applications

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Preparation of new solid phase micro extraction fiber on the basis of atrazine-molecular imprinted polymer: Application for GC and GC/MS screening of triazine herbicides in water, rice and onion

Cited by 181 publications

References 38 publications

Probing trace levels of prometryn solutions: from test samples in the lab toward real samples with tap water

Probing trace levels of prometryn solutions: from test samples in the lab toward real samples with tap water

Ultrasonic solvent extraction and nonaqueous CE for the determination of herbicide residues in potatoes

Solid-Phase Extraction for Enrichment and Separation of Herbicides

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