Determination of tsumacide residues in vegetable samples using a flow‐injection chemiluminescence method

Liu, Haiyan; Hao, Yuhong; Ren, Juanjuan; He, Pingang; Fang, Yuzhi

doi:10.1002/bio.963

Cited by 16 publications

(7 citation statements)

References 25 publications

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“…CL determination employing strong oxidants of some carbamates without sulphur in their chemical structures have been reported [24][25][26][27][28][29] in FI and multicommutation systems, but this CL behaviour was only observed in one case after UV irradiation. 29 However, as mentioned above, in the assayed conditions only the carbamate pesticides containing sulphur in their chemical structure showed a PICL response.…”

Section: Picl Mechanismmentioning

confidence: 99%

Photoinduced chemiluminescence determination of carbamate pesticides

Catalá-Icardo

Lloret

Torres-Cartas

2016

Photochem Photobiol Sci

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Royal Society of ChemistryCatalá-Icardo, M.; Meseguer-Lloret, S.; Torres-Cartas, S. (2016 A liquid chromatography method with post-column photoinduced chemiluminescence (PICL) detection is proposed for the simultaneous determination of eight carbamate pesticides, namely aldicarb, butocarboxim, ethiofencarb, methomyl, methiocarb, thiodicarb, thiofanox and thiophanate-methyl. After chromatographic separation, quinine (sensitizer) was incorporated and the flow passed through an UV lamp (67 s of irradiation time) to obtain the photoproducts, which reacted qith acidic Ce(IV) and provided a CL emission. The PICL method showed great selectivity for carbamate pesticides containing sulphur in their chemical structure. A solid-phase extraction process increased sensitivity (LODs ranging from 0.06 to 0.27 ng mL -1) and allowed the carbamate pesticides in surface and ground water samples to be determined, with recoveries in the range 87-110% (except for thiophanate-methyl, whose recoveries were between 60 and 75%). The intraand inter-day precision was evaluated, with RSD ranging from 1.1 to 7.5% and from 2.6 to 12.3%, respectively. A discussion about the PICL mechanism is also included.

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Section: Picl Mechanismmentioning

confidence: 99%

Photoinduced chemiluminescence determination of carbamate pesticides

Catalá-Icardo

Lloret

Torres-Cartas

2016

Photochem Photobiol Sci

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“…Rh6‐G has been used as an enhancer in FI CL systems with Ag(III), Ce(IV) and KMnO 4 in acidic conditions for cefazolin, total phenolic compounds and tsumacide assays. Rh6‐G has been oxidized to an excited state by hydroxyl radicals generated in the presence of Fe(III) with H 2 O 2 for ascorbic acid detection and transferred energy to an non‐oxidized Rh6‐G molecule that generated strong CL emission monitored at 560 nm .…”

Section: Resultsmentioning

confidence: 99%

Flow‐injection determination of manganese (II) using surfactant enhanced diperiodatonickelate (IV)‐rhodamine 6G chemiluminescence

et al. 2019

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Chemiluminescence (CL) of the rhodamine 6-G-diperiodatonickelate (IV) (Rh6-G-Ni(IV) complex) in the presence of Brij-35 was examined in an alkaline medium and implemented using flow-injection analysis to analyze Mn(II) in natural waters. Brij-35 was identified as the surfactant of choice that enhanced CL intensity by about 62% of the reaction. The calibration curves were linear in the range 1.7 × 10 −3 -0.2 (0.9990, n = 7) and 8.0 × 10 −4 -0.1 μg ml −1 (0.9990, n = 7) with limits of detection (LODs) (S:N = 3) of 5.0 × 10 −4 and 2.4 × 10 −4 μg ml −1 without and with using an in-line 8hydroxyquinoline (8-HQ) resin mini-column, respectively. The sample throughput and relative standard deviation were 200 h −1 and 1.7-2.2% in the range studied respectively. Mn(II) concentrations in certified reference materials and natural water samples was successfully determined. A brief discussion about the possible CL reaction mechanism is also given. In addition, analysis of V(III), Cr(III) and Fe(II) was also performed without and with using an in-line 8-HQ column and selective elution of each metal ion was achieved by adjusting the pH of the sample carrier stream with aqueous HCl solution.

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“…The performance of R6G as an enhancer during the CL reaction has been used with several oxidizing agents under acidic conditions, such as the complex of silver(III), [46] cerium(IV) [47,48] and KMnO 4 [49] to determine various analytes. The hydroxyl radicals formed during the Fenton reaction oxidized R6G in an electronically excited state.…”

Section: R6g-silver(iii) Complex CL Reaction Mechanismmentioning

confidence: 99%

Determination of lansoprazole in pharmaceuticals using flow injection with rhodamine 6G–diperiodatoargentate(III) chemiluminescence detection

et al. 2022

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A chemiluminescence (CL) method based on rhodamine 6G (R6G)diperiodatoargentate(III) (silver(III) complex) reaction in acid solution is reported for the determination of lansoprazole (LNP) combined with a flow injection (FI) technique. The most likely mechanism for CL reaction was elucidated considering reported data, spectrophotometric and spectrofluorimetric studies. The weak CL reaction between R6G and silver(III) complex could be magnanimously increased in the presence of LNP with a limit of detection (LOD) of 0.002 mg L À1 (S/N = 3), a linear range of 0.01 to 10 mg L À1 (R 2 = 0.9997, n = 7), a relative standard deviation (RSD) of 1.2 to 3.2% (n = 4) and an injection throughput of 140 h À1 . No interference activity of commonly found excipients in LNP was detected. After LNP extraction from pharmaceutical samples, the recovery rate ranging from 93 to 110% (RSD, 1.4-3.3%, n = 4) was calculated. The results of the proposed flow CL method were assessed with a spectrophotometric approach applying paired Student's t-test and the calculated value (0.178) was lower than the distributed value (2.20) at a 95% confidence limit.

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Determination of tsumacide residues in vegetable samples using a flow‐injection chemiluminescence method

Cited by 16 publications

References 25 publications

Photoinduced chemiluminescence determination of carbamate pesticides

Photoinduced chemiluminescence determination of carbamate pesticides

Flow‐injection determination of manganese (II) using surfactant enhanced diperiodatonickelate (IV)‐rhodamine 6G chemiluminescence

Determination of lansoprazole in pharmaceuticals using flow injection with rhodamine 6G–diperiodatoargentate(III) chemiluminescence detection

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