Determination of Trifluralin and Chloridazon Residues in Agricultural Lands in Elazig Province

Tutarli, Aysel; Cici, M.; Çelik, Suna Özden

doi:10.1080/09593331608616337

Cited by 3 publications

(2 citation statements)

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“…Most of herbicides measurements are based on chromatography techniques and so far, the use of DNA biosensors for detection of herbicides has not been reported ( Table 1). It seems this is due to the stronger matrix effects and difficulties in chromatographic separation, resulting in a higher uncertainty of measurements [51][52][53][54][55].…”

Section: Comparison Of the Interactions Of Ds-dna And Ss-dna With Pirmentioning

confidence: 99%

DNA-based electrochemical biosensor using chitosan–carbon nanotubes composite film for biodetection of Pirazon

Pyman

Roshanfekr

Ansari

2020

Eurasian Chem. Commun.

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The interaction of Pirazon (PIR) with calf thymus ds-DNA (double-stranded Deoxyribonucleic acid) in the solution and the immobilized DNA on chitosan-carbon nanotubes composite-modified gold electrode was investigated by electrochemical and UV-Vis spectroscopy techniques. In the solution interactions, spectroscopic results indicate non-intercalative binding of PIR. A competition study with methylene blue, as an intercalative probe, was applied to confirm the binding mode of PIR. PIR showed an oxidation peak at 1.1 V at the bare Au electrode. When ds-DNA was added into the PIR solution, its peak current decreased. Au electrode modified with single wall carbon nanotube (SWCNT) and chitosan (CS) decorated with the ds-DNA was tested to determine PIR content in solution. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) were used to characterize the electrochemical properties of the modified electrode. The modified electrode surface has good reproducibility and stability. The modified electrode exhibited linear detection range, 5×10-9 to 5×10-5 M, with a detection limit of 1×10-10 M.

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Section: Comparison Of the Interactions Of Ds-dna And Ss-dna With Pirmentioning

confidence: 99%

DNA-based electrochemical biosensor using chitosan–carbon nanotubes composite film for biodetection of Pirazon

Pyman

Roshanfekr

Ansari

2020

Eurasian Chem. Commun.

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“…Existing analytical methods (Foreman et al, 1993;Riley and Keese, 1996;Baez et al, 1997;Miliadis, 1998) for aqueous samples primarily deal with determination of trifluralin as one analyte among multiple types of herbicide residues and are not necessarily optimized for the recovery of trifluralin. Trifluralin is generally extracted from soil using an organic solvent such as ethyl acetate (Garcia-Valcarcel et al, 1996), acetonitrile (Yordy et al, 1988;An and Qian, 1992;Krause and Niemczyk, 1992), acetone (Balinova and Balinov, 1991), methanol (Lu and Xu, 1991), methylene chloride (Duc, 1992), or diethyl ether (Cabras et al, 1991) either by sonication (Lopez-Avila et al, 1991), mechanical shaking (Garcia-Valcarcel et al, 1996), or Soxhlet extraction (Tutarli et al, 1995). The extract is then cleaned by Florisil (Lu and Xu, 1991;D'Amato et al, 1993;Garcia-Valcarcel et al, 1996) or solid-phase extraction (SPE) (Yordy et al, 1988;Krause and Niemczyk, 1992;Cabras et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

Comparison among Soil Series and Extraction Methods for the Analysis of Trifluralin

Garimella

Stearman

Wells

2000

J. Agric. Food Chem.

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Accurate analytical procedures are needed to improve understanding of the fate and transport of trifluralin, a chemical widely used as a herbicide. Analytical determination of trifluralin is challenging due to its hydrophobic, yet volatile, character and its tendency to degrade into numerous metabolites. In this research, efficient analytical methods for fortified and field-incurred soils were developed for simultaneous quantitation of trifluralin, I [2,6-dinitro-N,N-dipropyl-4-(trifluoromethyl)benzenamine, CAS Registry No. 1582-09-8; CAS Registry No. have been provided by the author], a trifluralin metabolite, II [2,6-dinitro-N-propyl-4-(trifluoromethyl)benzenamine, CAS Registry No. 2077-99-8], and a related trifluoromethyldinitroaniline isomer of trifluralin, III [2,4-dinitro-N,N-dipropyl-6-(trifluoromethyl)benzenamine, CAS Registry No. 23106-20-9]. Extractions of trifluralin (0.5 and 2.5 microg/g) from silt loam, sandy loam, and silty clay soils were compared. A method was developed for the supercritical fluid extraction of trifluralin from soil using modified supercritical carbon dioxide, and the effects of cosolvent, pressure, and flow rate on recovery were evaluated. Supercritical fluid extraction was compared to liquid vortex extraction and automated Soxhlet (soxtec) extraction. Solid-phase extraction was examined for purifying soil extracts. Protocols were developed for analysis of extracts by gas and/or liquid chromatography. Immunoassay was investigated but proven to be impractical for this analysis. Soil properties and extraction methods were observed to affect the level of coextracted background interferences. Trifluralin exhibited concentration-dependent recovery regardless of soil series or extraction method.

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Simultaneous determination of nine dinitroaniline herbicides in environmental samples using a validated vortex-assisted dispersive liquid–liquid microextraction procedure coupled with GC–MS/MS

Abdallah

2020

Chem. Pap.

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Determination of Trifluralin and Chloridazon Residues in Agricultural Lands in Elazig Province

Cited by 3 publications

References 0 publications

DNA-based electrochemical biosensor using chitosan–carbon nanotubes composite film for biodetection of Pirazon

DNA-based electrochemical biosensor using chitosan–carbon nanotubes composite film for biodetection of Pirazon

Comparison among Soil Series and Extraction Methods for the Analysis of Trifluralin

Simultaneous determination of nine dinitroaniline herbicides in environmental samples using a validated vortex-assisted dispersive liquid–liquid microextraction procedure coupled with GC–MS/MS

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