Fluorescence Determination of the Pesticide Asulam by Flow Injection Analysis

Súbová, I.; Assandas, A. Khenlami; Catalá-Icardo, Mónica; Calatayud, J. Martı́nez

doi:10.2116/analsci.22.21

Cited by 15 publications

(2 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 3−5,10 , 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%

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%

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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show abstract

“…Fluorescence detectors can be used as sensors for flow systems. For example, fluorescence determination of the pesticide asulam was carried out by flow injection analysis [109]. This study focused on the influence of surfactants on the native fluorescence of asulam, as an effect of ultraviolet irradiation on the fluorescence of asulam by forming photo-fragments with high intensities.…”

Section: Flow-based Optical Detectionmentioning

confidence: 99%