A paper-based device for measurement of reactive phosphate in water

Jayawardane, B. Manori; McKelvie, Ian D.; Kolev, Spas D.

doi:10.1016/j.talanta.2012.08.021

Cited by 80 publications

(57 citation statements)

References 27 publications

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“…Evaluation of the analytical performance of the μPAD (Jayawardane et al, 2012) showed that it was responsive over a wide concentration range, with excellent within‐ and between‐device repeatability, and thus is suitable for the analysis of a range of soil and natural and marine waters. However, its use as a field device was precluded by poor storage stability.…”

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confidence: 99%

Evaluation and Application of a Paper-Based Device for the Determination of Reactive Phosphate in Soil Solution

et al. 2014

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The evaluation and validation of a new low-cost microfluidic paper-based analytical device (μPAD) for the determination of reactive phosphate in soil solution is described. This device allows up to 15 replicate measurements of reactive phosphate on one credit card-sized device and requires only a desktop or hand scanner for signal detection and quantification. The proposed method showed a linear response between 0.1 and 1.0 mg L and between 1.0 and 10.0 mg L P with a limit of detection of 0.05 mg L P. When applied to the analysis of soil solution, there was excellent agreement between results obtained using the μPAD and those obtained by a reference spectrophotometric method, as indicated by the following regression equation: [P] = (0.997 ± 0.005)[P] - (0.020 ± 0.008) ( = 0.997; = 110). It was found that the ambient temperature storage stability of the μPAD could be extended to 15 d by incorporating a removable polymeric interleaving sheet between the adjacent paper layers of the device. The observed sensitivity of the μPADs to sunlight, which was manifested by photoreduction of the chromogenic molybdate reagent used in the assay, was overcome by preparing the μPADs with an ultraviolet-filtering laminating material. The proposed method is rapid, with a reaction time of only 10 min, is easy to perform, and is suitable for application in the field.

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confidence: 99%

Evaluation and Application of a Paper-Based Device for the Determination of Reactive Phosphate in Soil Solution

et al. 2014

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“…Each layer contained 15 circular hydrophilic zones. The 3 mm in diameter zones (Zone 1) had a capacity to absorb 1 µL of Fe(III) solution while the 9 mm in diameter zones Although this design is similar to that of previous µPADs developed in our laboratory for phosphate measurement [33], the µPADs exhibited various issues which resulted in low sensitivity and poor inter-and intra-card repeatability as discussed in Section 3.1. Given these limitations, the 3-layer µPAD configuration ( Fig.…”

Section: Design and Fabrication Of The µPadmentioning

confidence: 99%

Development of a microfluidic paper-based analytical device for the determination of salivary aldehydes

Ramdzan

Almeida

McCullough

et al. 2016

Analytica Chimica Acta

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“…In recent years, paper-based devices for the colorimetric determination of chemicals have attracted a great deal of attention because they offer an easy detection procedure. Jayawardane et al (2012) produced a paper-based phosphomolybdate blue method for the detection of phosphorous in water. The measurement range was 0.2-10 mg L −1 with a detection limit of 0.05 mg L −1…”

Section: Colorimetric Techniquesmentioning

confidence: 99%

Sensing Technology for Rapid Detection of Phosphorus in Water: A Review

Islam¹,

Reza²,

Jeong³

et al. 2016

Journal of Biosystems Engineering

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Purpose: Phosphorus is an essential element for water quality control. Excessive amounts of phosphorus causes algal bloom in water, which leads to eutrophication and a decline in water quality. It is necessary to maintain the optimum amount of phosphorus present. During the last decades, various studies have been conducted to determine phosphorus content in water. In this study, we present a comprehensive overview of colorimetric, electrochemical, fluorescence, microfluidic, and remote sensing technologies for the measurement of phosphorus in water, along with their working principles and limitations. Results: The colorimetric techniques determine the concentration of phosphorus through the use of colorgenerating reagents. This is specific to a single chemical species and inexpensive to use. The electrochemical techniques operate by using a reaction of the analyte of interest to generate an electrical signal that is proportional to the sample analyte concentration. They show a good linear output, good repeatability, and a high detection capacity. The fluorescence technique is a kind of spectroscopic analysis method. The particles in the sample are excited by irradiation at a specific wavelength, emitting radiation of a different wavelength. It is possible to use this for quantitative and qualitative analysis of the target analyte. The microfluidic techniques incorporate several features to control chemical reactions in a micro device of low sample volume and reagent consumption. They are cheap and rapid methods for the detection of phosphorus in water. The remote sensing technique analyzes the sample for the target analyte using an optical technique, but without direct contact. It can cover a wider area than the other techniques mentioned in this review. Conclusion: It is concluded that the sensing technologies reviewed in this study are promising for rapid detection of phosphorus in water. The measurement range and sensitivity of the sensors have been greatly improved recently.

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A paper-based device for measurement of reactive phosphate in water

Cited by 80 publications

References 27 publications

Evaluation and Application of a Paper-Based Device for the Determination of Reactive Phosphate in Soil Solution

Evaluation and Application of a Paper-Based Device for the Determination of Reactive Phosphate in Soil Solution

Development of a microfluidic paper-based analytical device for the determination of salivary aldehydes

Sensing Technology for Rapid Detection of Phosphorus in Water: A Review

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