New flow-multicommutation method for the photo-chemiluminometric determination of the carbamate pesticide asulam

Chivulescu, A; Catalá-Icardo, Mónica; Mateo, J. V. García; Calatayud, J. Martı́nez

doi:10.1016/j.aca.2004.05.046

Cited by 44 publications

(21 citation statements)

References 28 publications

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“…Compared with the presented asulam determination method, the methods in Table 5 show some disadvantages in the limit of detection, 1,4,5,7,8,12,37 linear dynamic range [3][4][5]10 , and the range of the sample analyzed. [1][2][3][4][5][6][7][8][9][10]12,37 Moreover, the analytical characteristics of the presented sulfide determination method were compared with the others as shown in Table 6. Compared with the presented sulfide enrichment/determination method, the others show some limitations in the limit of detection, 19,20,38−44 linear dynamic range, 20,42 and the range of the sample analyzed.…”

Section: Comparison With the Other Methodsmentioning

confidence: 99%

“…This justifies asulam control in the environment in an accurate, sensitive, and selective manner. 1 Various analytical methods have been introduced for asulam determination in different samples. Some of the methods are chemiluminometric methods based on enhancing or inhibiting effects of asulam on the luminol/peroxidase system 2,3 and UV photoreaction-oxidation system, 1 electrocatalytic detection using nickel (II) phthalocyanine-multiwall carbon nanotubes (MWCNTs) 4 and cobalt(II) phthalocyanine modified MWCNTs, 5 an immunoassay method using a specific reactive antibody, 6 micellar electrokinetic capillary chromatography by UV and electrochemical detection, 7 capillary electrophoresis by UV and electrochemical detection, 8 ultra-HPLC-tandem MS 9 and spectrofluorimetry after derivatization with fluorescamine.…”

Section: Introductionmentioning

confidence: 99%

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Ionic liquid based microextraction combined with derivatization for efficient enrichment/determination of asulam and sulfide

Eskandari¹,

SHAHBAZI-RAZ²

2016

Turk J Chem

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This study reports 2 new simple derivatization-based dispersive liquid-liquid microextraction (DLLME) methods for spectrophotometric ultratrace determination of asulam and sulfide. 1-Naphthol (in the presence of nitrite) and N,N-diethyl-p-phenylenediamine (in the presence of Fe(III)) were used to derivatize asulam and sulfide, respectively.In the enrichment methods, the formed derivatives were preconcentrated into microdroplets of the in situ formed water insoluble ionic liquid (IL), 1-hexyl-3-methylimidazolium hexafluorophosphate. Monitoring was performed at 526 nm for asulam and at 664 nm for sulfide, after dissolution of the IL-rich phases into the basic ethanolic solution and ethanol for asulam and sulfide, respectively. Beer's law was obeyed in the ranges of 1.0-80.0 and 0.1-5.0 ng mL −1 for asulam and sulfide, respectively. Limits of detection for asulam and sulfide determination by the DLLME methods were 0.18 and 0.019 ng mL −1 , respectively. Various foreign cations, anions, organics, and pesticides were tested to evaluate the selectivity of the DLLME methods. The methods were successfully applied to the determination of asulam and sulfide in various environmental, wastewater, and urine samples.

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Section: Comparison With the Other Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ionic liquid based microextraction combined with derivatization for efficient enrichment/determination of asulam and sulfide

Eskandari¹,

SHAHBAZI-RAZ²

2016

Turk J Chem

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“…This solution was stable for at least for one week. 24 The working standard solutions were prepared daily by diluting the stock solution and protected against light.…”

Section: Solution Preparationmentioning

confidence: 99%

Fluorescence Determination of the Pesticide Asulam by Flow Injection Analysis

et al. 2006

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“…The UV irradiation proved to be an easy and clean way of derivatization to obtain fluorometric [27][28][29] or chemiluminescent structures. [30][31][32] A discussion of possible photoproducts is included. In order to automate the method, a flow injection analysis (FIA) manifold was developed.…”

Section: Introductionmentioning

confidence: 99%

Chemiluminescent Determination of the Pesticide Bromoxynil by On-line Photodegradation in a Flow-Injection System

et al. 2006

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IntroductionBromoxynil (3,5-dibromo-4-hydroxybenzonitrile) is a nitrile herbicide 1 that is used for the post-emergent control of annual broad-leaf weeds, especially in cereal, corn, sorghum, flax, onions, mint and non-cropland. This pesticide acts to inhibit photosynthesis in the target plants. The molecular structure is shown in Fig. 1.Most of the reported analytical methods for the determination of Bromoxynil are chromatographic, often in tandem with mass spectrometry, with UV detection, or even a combination of both.2 There are methods for the determination in atmospheric samples (gas and particles), 3 crops, 4 water, 5-11 from biological origins, 12 wines with a solid-phase extraction (SPE), 13 soils, [14][15][16] foodstuffs 17,18 or plants. 15 Electrochemical detection has been combined with HPLC for the determination of Bromoxynil and Ioxynil in barley. 19Two capillary electrophoresis methods 20,21 provided with solid-phase extraction have been proposed for Bromoxynil determination in the analysis of water samples.Although separative methods are by far the most commonly used; some attempts for direct determination have been published. Abubaker et al. 22 proposed peroxyoxalate chemiluminescence for the determination of phenol herbicides in soil. An ester is formed by a reaction with anhydride triethylamine and oxalyl chloride in tetrahydrofuran (THF). After eliminating of the supernatant liquid phase under a vacuum, a re-dissolution in THF containing 9,10-diphenylanthracene was implemented and the injection of H2O2 into a standard quartz spectrophotometer cell yielded light emission, which was measured at two different time intervals of 1 and 3 s. However, the linear range was observed for quite high concentrations, over the range of 10 -100 mg l -1 .Phosphorescence has been also used. 23 The spectra (264 and 420 nm for excitation and emission, respectively) were recorded in ether-isopentane-ethanol (5:5:2) at 77 K. A linear behavior was found in the range from 0.2 (quantitation limit) to 7.5 mg l -1 of Bromoxynil. Finally, a Photosystem II-based biosensor have been proposed by Koblizek et al. 24 This present paper contributes to the non-separation methods for the Bromoxynil determination. The selected detector was a luminometer; due to direct chemiluminescence, it provides a strong oxidant and has proved to be a highly sensitive method that is applicable over a wide range of concentrations and with very low detection limits. 25,26 To obtain the emitter product, online irradiation with UV light was used, as a clean reactive for derivatization. The UV irradiation proved to be an easy and clean way of derivatization to obtain fluorometric 27-29 or chemiluminescent structures. 30-32 A discussion of possible photoproducts is included. In order to automate the method, a flow injection analysis (FIA) manifold was developed. A new, robust and simple method is proposed for the chemiluminescent determination of the pesticide Bromoxynil. The empirical procedure is performed with the aid of a flow-injection manifol...

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New flow-multicommutation method for the photo-chemiluminometric determination of the carbamate pesticide asulam

Cited by 44 publications

References 28 publications

Ionic liquid based microextraction combined with derivatization for efficient enrichment/determination of asulam and sulfide

Ionic liquid based microextraction combined with derivatization for efficient enrichment/determination of asulam and sulfide

Fluorescence Determination of the Pesticide Asulam by Flow Injection Analysis

Chemiluminescent Determination of the Pesticide Bromoxynil by On-line Photodegradation in a Flow-Injection System

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