Determination of iodide based on dynamic gas extraction and colorimetric detection by paper modified with silver triangular nanoplates

Gorbunova, M. O.; Baulina, Anastasiya A.; Kulyaginova, Margarita S.; Apyari, V. V.; Furletov, Aleksei A.; Гаршев, А.В.; Дмитриенко, С. Г.

doi:10.1016/j.microc.2018.11.046

Cited by 20 publications

(6 citation statements)

References 44 publications

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“…As is known, the spectral characteristics of RIP samples and the intensity of their coloration are affected by the content of nanoparticles [ 22 , 24 , 42 , 44 , 45 , 46 , 47 , 48 , 49 ]. This point is important from the point of view of chemical analysis, since it is well known that the color intensity of any test strip, as well as the content of the reagent in it, has a strong influence on the metrological characteristics of the determination, such as the limit of detection (LOD) and the limits of quantification (LOQs).…”

Section: Resultsmentioning

confidence: 99%

Preparation of Reactive Indicator Papers Based on Silver-Containing Nanocomposites for the Analysis of Chloride Ions

Gorbunova,

Uflyand,

Zhinzhilo

et al. 2023

Micromachines

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In recent decades, metal-containing nanocomposites have attracted considerable attention from researchers. In this work, for the first time, a detailed analysis of the preparation of reactive indicator papers (RIPs) based on silver-containing nanocomposites derived from silver fumarate was carried out. Thermolysis products are silver-containing nanocomposites containing silver nanoparticles uniformly distributed in a stabilizing carbon matrix. The study of the optical properties of silver-containing nanocomposites made it possible to outline the prospects for their application in chemical analysis. RIPs were made by impregnating a cellulose carrier with synthesized silver fumarate-derived nanocomposites, which change their color when interacting with chlorine vapor. This made it possible to propose a method for the determination of chloride ions with preliminary oxidation to molecular chlorine, which is then separated from the solution by gas extraction. The subsequent detection of the active zone of RIPs using colorimetry makes it possible to identify mathematical dependences of color coordinates on the concentration of chloride ions. The red (R) color coordinate in the RGB (red-green-blue) system was chosen as the most sensitive and promising analytical signal. Calibration plots of exponential and linear form and their equations are presented. The limit of detection is 0.036 mg/L, the limits of quantification are 0.15–2.4 mg/L, and the time of a single determination is 25 min. The prospects of the developed technique have been successfully shown in the example of the analysis of the natural waters of the Don River, pharmaceuticals, and food products.

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Section: Resultsmentioning

confidence: 99%

Preparation of Reactive Indicator Papers Based on Silver-Containing Nanocomposites for the Analysis of Chloride Ions

Gorbunova,

Uflyand,

Zhinzhilo

et al. 2023

Micromachines

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“…Previously, we described the use of silver NPs in the analysis of halides [ 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. In continuation of these studies, this work is devoted to the thermolysis of silver itaconate, the composition and structure of the resulting NPs, and their use for the analysis of chloride ions.…”

Section: Introductionmentioning

confidence: 99%

Silver Itaconate as Single-Source Precursor of Nanocomposites for the Analysis of Chloride Ions

et al. 2022

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At present, conjugated thermolysis of metal-containing monomers is widely used as single-source precursors to obtain new metal- and metal oxide-containing nanocomposites. In this study, a detailed analysis of the main stages of conjugated thermolysis of silver itaconate was carried out. The obtained nanocomposites containing silver nanoparticles are evenly distributed in a stabilizing carbon matrix. The structural characteristics and properties of the resulting nanomaterials were studied using X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy (EDS). We have developed a method of test analysis of chlorides using paper modified with the obtained silver-containing nanocomposites. The analysis technique is based on the in situ conversion of chlorides to molecular chlorine, its dynamic release, and colorimetric detection using NP-modified paper test strips. A simple installation device is described that allows this combination to be realized. The proposed approach seems promising for nanoparticle-based determinations of other analytes that can be converted into volatile derivatives.

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“…Downsized extraction approaches combined with miniaturized UV–vis spectrophotometers ,− and probes , have demonstrated their convenience for determination of target analytes at trace levels. More recently, nonconventional detection devices such as digital cameras and smartphones have received much interest for on-site analysis, mainly in combination with paper-based analytical devices (PADs). − These systems proved suitable when combined with both drops and cellulose substrates as platforms for enrichment of volatiles with subsequent colorimetric detection. − However, the use of PADs modified with plasmonic NPs for analyte sensing suffers from certain limitations, including potential aggregation and nonuniform distribution issues, as well as a reduced retention efficiency of NPs on cellulose substrates . While certain NPs are conveniently retained in PADs by drop casting, the retention of NPs at the surface of cellulose substrates is commonly limited, leading to faintly colored detection areas in PADs that can affect their sensitivity when applied for colorimetric sensing.…”

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Waterproof Cellulose-Based Substrates for In-Drop Plasmonic Colorimetric Sensing of Volatiles: Application to Acid-Labile Sulfide Determination in Waters

et al. 2022

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The present work reports on the assessment of widely available waterproof cellulose-based substrates for the development of sensitive in-drop plasmonic sensing approaches. The applicability of three inexpensive substrates, namely, Whatman 1PS, polyethylene-coated filter paper, and tracing paper, as holders for microvolumes of colloidal solutions was evaluated. Waterproof cellulose-based substrates demonstrated to be highly convenient platforms for analytical purposes, as they enabled in situ generation of volatiles and syringeless drop exposure unlike conventional single-drop microextraction approaches and can behave as sample compartments for smartphone-based colorimetric sensing in an integrated way. Remarkably, large drop volumes (≥20 μL) of colloidal solutions can be employed for enrichment processes when using Whatman 1PS as holder. In addition, the stability and potential applicability of spherical, rod-shaped, and core–shell metallic NPs onto waterproof cellulose-based substrates was evaluated. In particular, Au@AgNPs showed potential for the colorimetric detection of in situ generated H 2 S, I 2 , and Br 2 , whereas AuNRs hold promise for I 2 , Br 2 , and Hg 0 colorimetric sensing. As a proof of concept, a smartphone-based colorimetric assay for determination of acid-labile sulfide in environmental water samples was developed with the proposed approach taking advantage of the ability of Au@AgNPs for H 2 S sensing. The assay showed a limit of detection of 0.46 μM and a repeatability of 4.4% ( N = 8), yielding satisfactory recoveries (91–107%) when applied to the analysis of environmental waters.

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Determination of iodide based on dynamic gas extraction and colorimetric detection by paper modified with silver triangular nanoplates

Cited by 20 publications

References 44 publications

Preparation of Reactive Indicator Papers Based on Silver-Containing Nanocomposites for the Analysis of Chloride Ions

Preparation of Reactive Indicator Papers Based on Silver-Containing Nanocomposites for the Analysis of Chloride Ions

Silver Itaconate as Single-Source Precursor of Nanocomposites for the Analysis of Chloride Ions

Waterproof Cellulose-Based Substrates for In-Drop Plasmonic Colorimetric Sensing of Volatiles: Application to Acid-Labile Sulfide Determination in Waters

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