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Швоева, О. П.; Dedkova, V. P.; Саввин, С. Б.

doi:10.1023/a:1012976614599

Cited by 16 publications

(5 citation statements)

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“…[19] Herein, we report the sensitive optical detection of glyphosate with an immobilized Cu(II)pyrocatechol violet complex (Figure 2) by an indicator displacement assay. We have successfully applied colorimetric solid-phase [27][28] extraction [29][30][31][32][33][34] for the detection of the herbicide in tap water by naked-eye and smartphone colorimetry.…”

Section: Introductionmentioning

confidence: 99%

Detection of glyphosate with a copper(ii)-pyrocatechol violet based GlyPKit

Yadav

Zelder

2021

Anal. Methods

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Section: Introductionmentioning

confidence: 99%

Detection of glyphosate with a copper(ii)-pyrocatechol violet based GlyPKit

Yadav

Zelder

2021

Anal. Methods

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“…Herein, we report the sensitive optical detection of cyanide with immobilized corrinoids. We have successfully applied colorimetric solid phase − with spatially separated extraction and detection zones for the optical detection of cyanide and hydrogen cyanide in complex, colored samples without time-consuming sample preparation. Simultaneous optical detection of cyanide and thiocyanate is also possible following this approach.…”

Section: Introductionmentioning

confidence: 99%

Complex Samples Cyanide Detection with Immobilized Corrinoids

Männel-Croisé

Zelder

2012

ACS Appl. Mater. Interfaces

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Colorimetric solid phase with spatially separated extraction and detection zones as a rapid, effective and economic method for the optical detection of cyanide in complex samples is described. The system is seven times more sensitive for the optical detection of cyanide than the same class of chemical sensors used under homogeneous conditions. The application of the method in the detection of (i) endogenous cyanide in colored plant samples and of (ii) hydrogen cyanide in tobacco smoke is shown. The optical detection of multiple anions within a single sample has been demonstrated in principle for the detection of both CN(-) and SCN(-). Immobilized aquacyano-corrinoids and immobilized vitamin B12 are applied as chemical sensors, and cyanide is qualitatively identified by the violet color (λ(max) = 583 nm) of the corresponding dicyano-complex. Quantitative determinations with diffuse reflectance spectroscopy (DRUV-vis) are possible in the linear range up to 0.2 mg/L with a LOD of 1 μg/L. Alkyl-modified silica particles are employed for immobilization of the indicator on the surface of the solid phase (detection zone), and for removal of colored hydrophobic interferents (extraction zone).

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“…The absorbance of the red coloured, water soluble complex was measured at 515 nm spectrophotometrically. 27 The amount of lead(II) was computed from the calibration curve.…”

Section: Estimation Procedures For Lead(ii) With Parmentioning

confidence: 99%

“…Therefore, in order to increase the selectivity, a reliable separation technique like solvent extraction is necessary before the spectrophotometric determination of lead(II) by PAR. 23…”

Section: Introductionmentioning

confidence: 99%