Determination of Iron Ion in the Water of a Natural Hot Spring Using Microfluidic Paper-based Analytical Devices

Ogawa, Kishiko; Kaneta, Takashi

doi:10.2116/analsci.32.31

Cited by 40 publications

(26 citation statements)

References 24 publications

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“…A similar reagent (i.e., 1,10-phenanthroline) was used by Ogawa et al 18 in μPADs where the LOD of their system was 2-orders higher (i.e., 40 μg mL -1 ) than observed by our proposed membrane-based sensor. Recently, Youngvises et al 19 also demonstrated the rapid determination and speciation of iron on a miniaturized microfluidic setup, but the LOD was in a similar range as of our developed method.…”

Section: Figure Of Meritsmentioning

confidence: 77%

“…The LOD obtained by our developed method was lower than that observed for a similar assay performed on μPADs. [16][17][18] Designing such devices was not only complex, but also required higher analyte volumes and longer durations for completion of the assay. On the other hand, our setup is easy with the one-step addition of the analyte to the reagent area/spot.…”

Section: One-step Assay For Fe 2+ Ionsmentioning

confidence: 99%

“…The membrane-based sensor may not be as ultrasensitive as other reported methods, 7,8 as shown in Table 2, but it offers a simple one-step procedure with an easy colorimetric readout. Most of the reported methods are multistep 4 that involve complex methodologies, 2,6 or device fabrication 18,19 that require a high-degree of expertise.…”

Section: Figure Of Meritsmentioning

confidence: 99%

See 2 more Smart Citations

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

et al. 2017

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An optical assay for the rapid determination and chemical speciation of Fe 2+ /Fe 3+ species has been proposed for the first time on a polyether sulfone (PES) membrane platform. The small pore size and low wettability (θ ~82 ) of the membrane disallowed the dissipation of analyte droplets on the surface, thus localizing it onto nanoliter arrayed 1,10-phenanthroline spots. Under optimized conditions and within ~5 min, an acceptable limit of detection (0.1 μg mL -1 ) and linear dynamic range (1 -100 μg mL -1 ) were achieved. The proposed method was also successfully applied for indirect determination of Fe 3+ ions in synthetic samples after reduction to Fe 2+ using SO2. The performance of the proposed sensor was validated for its robustness and stability. Due to high selectivity and accuracy, the method was satisfactorily applied for the analysis of Fe 2+ /Fe 3+ species in marine water samples. The proposed method is an easy and low-cost system coupled with good reproducibility and ruggedness, applicable for point-of-use testing.

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Section: Figure Of Meritsmentioning

confidence: 77%

Section: One-step Assay For Fe 2+ Ionsmentioning

confidence: 99%

See 1 more Smart Citation

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

et al. 2017

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“…[12][13][14][15][16] To date, μPADs have been used as elegant analytical tools for a variety of applications, including medical diagnosis, [17][18][19][20][21] food testing, 22 and environmental monitoring. [23][24][25][26][27][28][29] A lot of detection methods have been used for μPADs. The most common detection method for μPADs is colorimetry because analysis is relatively simple.…”

Section: Crmentioning

confidence: 99%

“…The most common detection method for μPADs is colorimetry because analysis is relatively simple. Moreover, there are various techniques of the fabrication of μPADs, such as wax printing, 23,26,27,[29][30][31][32] inkjet printing, 17 screen printing, 18,22 and photolithography. 24 With regard to Cr analysis using μPADs, several methods have been reported.…”

Section: Crmentioning

confidence: 99%

Microfluidic Paper-based Analytical Device for the Determination of Hexavalent Chromium by Photolithographic Fabrication Using a Photomask Printed with 3D Printer

Asano

Shiraishi

2018

ANAL. SCI.

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This article describes a simple and inexpensive microfluidic paper-based analytical device (μPAD) for the determination of hexavalent chromium (Cr VI ) in water samples. The μPADs were fabricated on paper by photolithography using a photomask printed with a 3D printer and functionalized with reagents for a colorimetric assay. In the μPAD, Cr VI reacts with 1,5-diphenylcarbazide to form a violet-colored complex. Images of μPADs were captured with a digital camera; then the red, green, and blue color intensity of each detection zone were measured using images processing software. The green intensity analysis was the best sensitive among the RGB color. A linear working range (40 -400 ppm; R 2 = 0.981) between the Cr VI and green intensity was obtained with a detection limit of 30 ppm. All of the recoveries were between 94 and 109% in recovery studies on water samples, and good results were obtained.

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Recent advances of environmental pollutants detection via paper‐based sensing strategy

Zou

et al. 2021

Luminescence

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Paper has become one of the most promising substrates for building low‐cost and powerful sensing platforms due to its self‐pumping ability and compatibility with multiple patterning methods. Paper‐based sensors have been greatly developed in the field of environmental monitoring. In this review, we introduced the research and application of paper‐based sensors in environmental monitoring, focusing on the deposition and patterning methods of building paper‐based sensors, and summarized the applications of detecting environmental pollutants, including metal ions, anions, explosives, neurotoxins, volatile organic compounds, and small molecules. In addition, the development prospects and challenges of promoting paper‐based sensors are also discussed. The current review will provide references for the construction of portable paper‐based sensors, and has implications for the field of on‐site real‐time detection of the environment.

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Determination of Iron Ion in the Water of a Natural Hot Spring Using Microfluidic Paper-based Analytical Devices

Cited by 40 publications

References 24 publications

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

A Highly Structured 1,10-Phenanthroline Arrayed Hydrophobic Sulfone Membrane Platform for the Rapid Determination and Speciation of Fe2+/Fe3+ Ions in Water

Microfluidic Paper-based Analytical Device for the Determination of Hexavalent Chromium by Photolithographic Fabrication Using a Photomask Printed with 3D Printer

Recent advances of environmental pollutants detection via paper‐based sensing strategy

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