Determination of thiram in natural waters using flow‐injection with cerium(IV)–quinine chemiluminescence system

Waseem, Amir; Yaqoob, Mohammad; Nabi, Abdul

doi:10.1002/bio.1147

Cited by 34 publications

(6 citation statements)

References 26 publications

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“…34 In the second step, the photoproducts (PP) obtained are oxidised with Ce(IV) in acidic medium and in the presence of quinine. As has been reported, [35][36][37] the reduction of Ce(IV) produces excited Ce(III) which is deactivated by emitting a weak CL signal at 350 nm. Quinine, a good fluorescent substance with a emission maximum at about 450 nm, 38 has been often employed in order to increase the CL intensity via an energy-transfer excitation process.…”

Section: Picl Mechanismsupporting

confidence: 54%

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 Mechanismsupporting

confidence: 54%

Photoinduced chemiluminescence determination of carbamate pesticides

Catalá-Icardo

Lloret

Torres-Cartas

2016

Photochem Photobiol Sci

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“…When compared with those different traditional complicated and timeconsuming methods such as chromatography, UV-Vis spectrophotometry, enzyme-linked immunosorbent assay and chemiluminescence analysis (Gupta et al 2012;Rastegarzadeh et al 2013;Queffelec et al 2001;Waseem et al 2010), the analytical method based on SERS technique is promising as it can be used for rapid detection of trace thiram. Figure 7 shows the Raman spectra of thiram in ethanol with concentrations decreasing from 1 9 10 -3 to 1 9 10 -7 M using the FSA composites as SERS substrate.…”

Section: Sers Detection Of Thirammentioning

confidence: 99%

Fabrication of cube-like Fe3O4@SiO2@Ag nanocomposites with high SERS activity and their application in pesticide detection

Zhao

Wang

et al. 2016

J Nanopart Res

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The cube-like Fe 3 O 4 @SiO 2 @Ag (FSA) nanocomposites with great SERS activity have been successfully synthesized by a layer-by-layer procedure in this paper. The cube-like Fe 3 O 4 @SiO 2 coreshell structures were prepared via a new route and Ag nanoparticles were introduced onto their surface through a one-pot hydrothermal reaction. By controlling the reaction time, the coverage rate of Ag on the FSA surface could be tuned, and then a series of FSA composites were obtained. The SERS properties of these FSA composites were investigated using paminothiophenol (p-ATP) as the probe molecule. It was found that the FSA composites synthesized with a reaction time of 6 h showed the best SERS performance, and the detection limit for p-ATP could reach 1 9 10 -7 M. For practical application, the FSA composites were also used to detect thiram, one of the dithiocarbamate fungicides that has been widely used as a pesticide in agriculture. The detection limit is as low as 1 9 10 -6 M (0.24 ppm), lower than the maximal residue limit of 7 ppm in fruit prescribed by the US Environmental Protection Agency. The resulting substrate with high SERS activity, stability and strong magnetic responsivity makes the FSA composite a perfect choice for practical SERS detection applications.

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“…It is necessary to evaluate the risk of thiram residues through detection of trace quantities of thiram. Some methods have been used for the determination of thiram, such as chromatography [51], enzyme linked immunosorbent assay [52] and chemiluminescence analysis [53]. SERS is one effective method to determine the trace residue of thiram [48, 54, 55, 56].…”

Section: Resultsmentioning

confidence: 99%

Waste Fiber Powder Functionalized with Silver Nanoprism for Enhanced Raman Scattering Analysis

et al. 2017

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Biomass disks based on fine powder produced from disposed wool fibers were prepared for surface-enhanced Raman scattering (SERS). The wool powders (WPs) were modified by silver nanoprisms via an assembly method and then pressed into disks using a hydraulic laboratory pellet press. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterize the WPs and disks before and after treatment with silver nanoparticles (AgNPs). The WPs retained porous structures after treatment with AgNPs. The silver nanoprisms on WPs were observed clearly and the localized surface plasmon resonance (LSPR) properties of silver nanoprisms led to blue color of wool powder (WP). The obtained WP disks with AgNPs were confirmed to enhance greatly the Raman signal of thiram. The SERS disks are low-cost and convenient to use, with high sensitivity. The characteristic SERS bands of 10−8 M thiram can be identified from WP disks containing silver nanoparticles.

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Determination of thiram in natural waters using flow‐injection with cerium(IV)–quinine chemiluminescence system

Cited by 34 publications

References 26 publications

Photoinduced chemiluminescence determination of carbamate pesticides

Photoinduced chemiluminescence determination of carbamate pesticides

Fabrication of cube-like Fe3O4@SiO2@Ag nanocomposites with high SERS activity and their application in pesticide detection

Waste Fiber Powder Functionalized with Silver Nanoprism for Enhanced Raman Scattering Analysis

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