Inkjet-printed disposable metal complexing indicator-displacement assay for sulphide determination in water

Ariza-Avidad, M.; Agudo-Acemel, Manuel; Salinas-Castillo, Alfonso; Capitán-Vallvey, L.F.

doi:10.1016/j.aca.2015.02.045

Cited by 33 publications

(9 citation statements)

References 44 publications

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“…The Cu-PAN complex was prepared as described in the literature [8,9] according to Scheme 1. A solution of 0.5 mmol copper(II) chloride dihydrate (≥99.99% trace metals basis, ALDRICH Chemistry, St. Louis, MO, USA) in 3 mL of distilled water was added to a solution of 0.5 mmol 1-(2-pyridylazo)-2-naphtol (H-PAN) (indicator grade, SIGMA-ALDRICH, St. Louis, MO, USA) in 75 mL of ethanol (HPLC gradient grade, ROTH, Karlsruhe, Germany).…”

Section: Methodsmentioning

confidence: 99%

Screen-Printed Sensors for Colorimetric Detection of Hydrogen Sulfide in Ambient Air

Engel

Tarantik

Pannek

et al. 2019

Sensors

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A fast and sensitive method to monitor hydrogen sulfide (H2S) in ambient air based on a visible color change of a printed disposable sensor has been developed. As gas-sensitive material, an immobilized copper(II) complex of the azo dye 1-(2-pyridylazo)-2-naphtol (H-PAN) was synthesized and prepared in an ethyl cellulose matrix for screen printing. If H2S is present in ambient air, the gas sensitive layer changes its color from purple to yellow. A pre-primed polyethylene (PE) foil and a coated offset paper served as the printing substrate. The colorimetric response to the target gas was measured by UV/Vis spectroscopy in reflection at H2S concentrations between 1 to 20 ppm. Possible cross-sensitivities of the printed sensors towards methane (CH4), formaldehyde (CH2O), carbon monoxide (CO), ammonia (NH3), and nitrogen dioxide (NO2), as well as the long-term stability was investigated. Furthermore, reflection measurements of the Cu-PAN complex on an amorphous silica powder under gas admission served as preliminary test for the subsequent paste development.

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Section: Methodsmentioning

confidence: 99%

Screen-Printed Sensors for Colorimetric Detection of Hydrogen Sulfide in Ambient Air

Engel

Tarantik

Pannek

et al. 2019

Sensors

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“…The Cu-PAN complex was prepared as described in literature [3,4]. A solution of 0.5 mmol copper(II) chloride dihydrate (≥99.99% trace metals basis, ALDRICH Chemistry) in 3 mL distilled water was added to a solution of 0.5 mmol 1-(2-pyridylazo)-2-naphtol (Indicator Grade, SIGMA-ALDRICH) in 75 mL ethanol (HPLC Gradient Grade, ROTH).…”

Section: Preparation Of the Cu-pan Test Stripesmentioning

confidence: 99%

Colorimetric Detection of Hydrogen Sulfide in Ambient Air

et al. 2018

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We present a fast method to monitor hydrogen sulfide (H2S) in ambient air based on a visible color change. Therefore, an immobilized copper(II) complex of the azo dye 1-(2-pyridylazo)-2-naphtol (H-PAN) was synthesized and prepared in a matrix for screen printing. Different materials, reaching from opaque paper to transparent foils served as substrate. The reaction of the copper(II) complex (Cu-PAN) to the target gas H2S was measured in reflection via UV/VIS spectroscopy.

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“…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. 19,20,38,40,41,43,44 …”

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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Inkjet-printed disposable metal complexing indicator-displacement assay for sulphide determination in water

Cited by 33 publications

References 44 publications

Screen-Printed Sensors for Colorimetric Detection of Hydrogen Sulfide in Ambient Air

Screen-Printed Sensors for Colorimetric Detection of Hydrogen Sulfide in Ambient Air

Colorimetric Detection of Hydrogen Sulfide in Ambient Air

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

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