On-site detection of heavy metals in wastewater using a single paper strip integrated with a smartphone

Muhammad-Aree, Supattra; Teepoo, Siriwan

doi:10.1007/s00216-019-02369-x

Cited by 50 publications

(28 citation statements)

References 28 publications

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“…For example, nickel(II), chromium(VI), mercury(II), and iron(II) ions can be detected using Dimethylglyoxim [ 336 , 337 , 338 ], 1,5-diphenylcarbazide [ 336 ], Michler’s thioketone [ 336 ], bathophenanthroline [ 337 ], or 10-phenanthroline [ 338 ], respectively. To detect copper (II) ions, the following materials can be used: diethyldithiocarbamate [ 337 ], bathocuproine [ 338 ], and cuprizone [ 339 ]. Sensors with strip or micro-spot structure based on these indicators are employed to evaluate the contamination of drinking and environmental water samples [ 340 , 341 ].…”

Section: Application Of Paper Biosensors In the Detection Of Toxic Materialsmentioning

confidence: 99%

Disposable Paper-Based Biosensors for the Point-of-Care Detection of Hazardous Contaminations—A Review

Bordbar

Sheini

Hashemi³

et al. 2021

Biosensors

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The fast detection of trace amounts of hazardous contaminations can prevent serious damage to the environment. Paper-based sensors offer a new perspective on the world of analytical methods, overcoming previous limitations by fabricating a simple device with valuable benefits such as flexibility, biocompatibility, disposability, biodegradability, easy operation, large surface-to-volume ratio, and cost-effectiveness. Depending on the performance type, the device can be used to analyze the analyte in the liquid or vapor phase. For liquid samples, various structures (including a dipstick, as well as microfluidic and lateral flow) have been constructed. Paper-based 3D sensors are prepared by gluing and folding different layers of a piece of paper, being more user-friendly, due to the combination of several preparation methods, the integration of different sensor elements, and the connection between two methods of detection in a small set. Paper sensors can be used in chromatographic, electrochemical, and colorimetric processes, depending on the type of transducer. Additionally, in recent years, the applicability of these sensors has been investigated in various applications, such as food and water quality, environmental monitoring, disease diagnosis, and medical sciences. Here, we review the development (from 2010 to 2021) of paper methods in the field of the detection and determination of toxic substances.

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Section: Application Of Paper Biosensors In the Detection Of Toxic Materialsmentioning

confidence: 99%

Disposable Paper-Based Biosensors for the Point-of-Care Detection of Hazardous Contaminations—A Review

Bordbar

Sheini

Hashemi³

et al. 2021

Biosensors

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“…Furthermore, the app-based tests on real samples, such as tap water and well water, yielded satisfactory accuracy and recovery rate. Recently, this app has also been adopted for detecting antibiotic residue to monitor food safety as well as environmental pollution. , Particularly, Ye et al. reported a ratiometric fluorescent imaging platform for quantifying fluoroquinolone antibiotics in food and environmental samples, and Muhammad-aree et al fabricated a paper strip for simultaneous colorimetric detection of common heavy metals Zn, Cr, Cu, Pb, and Mn in wastewater …”

Section: Mobile App-based Molecular Sensingmentioning

confidence: 99%

“…Recently, this app has also been adopted for detecting antibiotic residue to monitor food safety as well as environmental pollution. 54,55 Particularly, Ye et al reported a ratiometric fluorescent imaging platform for quantifying fluoroquinolone antibiotics in food and environmental samples, 54 and Muhammad-aree et al fabricated a paper strip for simultaneous colorimetric detection of common heavy metals Zn, Cr, Cu, Pb, and Mn in wastewater. 55 Apart from Color Picker and Color Grab, two other commercially available apps that can differentiate colors in RGB and CMYK models are Adobe Capture and Color Detector.…”

Section: ■ Modernized Telemedicine: Mobile Phone Sensing and Beyondmentioning

confidence: 99%

Development and Application of Mobile Apps for Molecular Sensing: A Review

Sun

Zhou

et al. 2021

ACS Sens.

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Modern smartphone-based sensing devices are generally standalone detection platforms that can transduce signals (via the built-in USB port, audio jack, or camera), perform analysis through mobile applications (apps), and display results on the screen/user interface. The advancement toward this ultimate form of on-site chemical analysis and point-of-care diagnosis is tied closely with the evolution of mobile technology. Previous reviews in the field mainly focused on the physical platforms while overlooking the role of mobile apps in such devices. There exist three general stages throughout the development: (1) early generation telemedicine, (2) mobile phone-assisted clinical diagnosis (without apps), and (3) mobile app-based sensing devices for various analytes. This review presents the key breakthroughs during each stage, recent development, remaining challenges, and future perspectives of the field. Representative examples, spanning from the pioneering point-of-care testing to the latest devices with integrated mobile apps, are classified by their sensing mechanisms. The review also discusses the scarcity of open-source apps dedicated to molecular sensing. With the introduction of more open-source and commercial apps, the mobile app-based detection system is anticipated to dominate point-of-care diagnosis and on-site molecular sensing in our opinion.

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“…The implementation of colorimetric sensors is based on image processing, and the color formation can occur in solution or on a solid support. The colorimetric reaction on a solid support has been mostly reported in paper-based format [25][26][27][28][29][30][31][32], with other types of solid supports including chitosan film [33], carbon dots-sodium alginate hydrogel [34], aerogel [35], modified wood [36] and microtube containing fiber glass [37]. Despite this, the association of preconcentration features and imaging analysis has been seldom exploited [31].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the methods have been developed with controlled illumination [25,26,[30][31][32][33][34][37][38][39][40], as lighting conditions can influence color perception [23]. However, algorithms have been developed to ensure color constancy under uncontrolled illumination, and/or to simplify the retrieval of the color.…”

Section: Introductionmentioning

confidence: 99%

Development of a Screening Method for Sulfamethoxazole in Environmental Water by Digital Colorimetry Using a Mobile Device

et al. 2022

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Antibiotic resistance is a major health concern of the 21st century. The misuse of antibiotics over the years has led to their increasing presence in the environment, particularly in water resources, which can exacerbate the transmission of resistance genes and facilitate the emergence of resistant microorganisms. The objective of the present work is to develop a chemosensor for screening of sulfonamides in environmental waters, targeting sulfamethoxazole as the model analyte. The methodology was based on the retention of sulfamethoxazole in disks containing polystyrene divinylbenzene sulfonated sorbent particles and reaction with p-dimethylaminocinnamaldehyde, followed by colorimetric detection using a computer-vision algorithm. Several color spaces (RGB, HSV and CIELAB) were evaluated, with the coordinate a_star, from the CIELAB color space, providing the highest sensitivity. Moreover, in order to avoid possible errors due to variations in illumination, a color palette is included in the picture of the analytical disk, and a correction using the a_star value from one of the color patches is proposed. The methodology presented recoveries of 82–101% at 0.1 µg and 0.5 µg of sulfamethoxazole (25 mL), providing a detection limit of 0.08 µg and a quantification limit of 0.26 µg. As a proof of concept, application to in-field analysis was successfully implemented.

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On-site detection of heavy metals in wastewater using a single paper strip integrated with a smartphone

Cited by 50 publications

References 28 publications

Disposable Paper-Based Biosensors for the Point-of-Care Detection of Hazardous Contaminations—A Review

Disposable Paper-Based Biosensors for the Point-of-Care Detection of Hazardous Contaminations—A Review

Development and Application of Mobile Apps for Molecular Sensing: A Review

Development of a Screening Method for Sulfamethoxazole in Environmental Water by Digital Colorimetry Using a Mobile Device

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