Determination of calcium by a single-use optical sensor

Capitán-Vallvey, L.F.; Cienfuegos-Gálvez, P Alvarez de; Ramos, María Dolores Fernández; Avidad-Castañeda, R.

doi:10.1016/s0925-4005(00)00602-x

Cited by 21 publications

(8 citation statements)

References 22 publications

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“…We have studied the use of transparent membranes containing the necessary reagent in disposable sensors for the optical determination of different analytes measuring the optical property (absorption, luminescence) in transmission mode [2,[17][18][19]. In this paper we investigate the use of these disposable sensors in reflectance mode.…”

Section: Introductionmentioning

confidence: 99%

Potassium disposable optical sensor based on transflectance and cromaticity measurements

Orbe-Payá

Erenas

Capitán-Vallvey

2007

Sensors and Actuators B: Chemical

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Section: Introductionmentioning

confidence: 99%

Potassium disposable optical sensor based on transflectance and cromaticity measurements

Orbe-Payá

Erenas

Capitán-Vallvey

2007

Sensors and Actuators B: Chemical

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“…After independent full‐text review, the reviewers met to exclude articles ( n = 41) after reaching a final agreement for the following reasons: matrix is not food or potable water ( n = 32), no interference study was conducted ( n = 2), no dynamic range or limit of detection were studied ( n = 4), and previously reported sensors in prior studies ( n = 3). A total of 42 sensors (Aksuner, Henden, Yenigul, Yilmaz, & Cukurovali, ; Alexander, Dimitrakopoulos, & Hibbert, ; Bagher‐Gholivand, Babakhanian, Mohammadi, Moradi, & Kiaie, ; Bratov, Abramova, Domı́nguez, & Baldi, ; Camara‐Martos et al., ; Capitan‐Vallvey, Arroyo, Berenguer, Fernandez‐Ramos, & Avidad, ; Capitan‐Vallvey, de Cienfuegos‐Galvez, Ramos, & Avidad‐Castaneda, ; Chaiyo et al., ; Chen, Niu, Xie, Long, & Song, ; Chumbimuni‐Torres & Kubota, ; Feier et al., ; Garcia‐Reyes, Ortega‐Barrales, & Molina‐Diaz, ; Hosseini et al., ; Indyk et al., ; Indyk et al., ; L. Kong et al., ; Kumar et al., ; Lermo et al., ; W. Liu et al., ; Ma et al., ; Mahmoud, ; Merli, Ravasio, Protti, Pesavento, & Profumo, ; Motlagh, Taher, & Ahmadi, ; Mu, Zhang, Zhao, & Wang, ; Prasad, Madhuri, Tiwari, & Sharma, ; Pulido‐Tofino, Moreno, & Perez‐Conde, ; Rastegarzadeh & Rezaei, ; Sadak, Sundramoorthy, & Gunasekaran, ; Samadi‐Maybodi & Rezaei, ; Selvakumar & Thakur, ; Shamsipur, Sadeghi, Garau, & Lippolis, ; Shervedani, Hatefi‐Mehrjardi, & Asadi‐Farsani, ; Simoes da Costa, Delgadillo, & Rudnitskaya, ; Tomcik & Bustin, ; van Staden & Stefan, ; Verma & Kaur, ; Vidigal, Toth, & Rangel, ; Vlascici, Fagadar‐Cosma, Popa, Chiriac, & Gil‐Agusti, ; Weng, Chen, Wang, Xue, & Jiang, ; Zare, Shishehbore, & Nematollahi, ; Zhang et al., ; Zhu et al., ) remained for assessment against the ASSURED criteria (Figure ).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Micronutrient Sensors for Food Matrices in Resource‐Limited Settings: A Systematic Narrative Review

Waller

Lotton

Gaur

et al. 2018

Journal of Food Science

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In resource-limited settings, mass food fortification is a common strategy to ensure the population consumes appropriate quantities of essential micronutrients. Food and government organizations in these settings, however, lack tools to monitor the quality and compliance of fortified products and their efficacy to enhance nutrient status. The World Health Organization has developed general guidelines known as ASSURED (Affordable, Sensitive, Specific, User-friendly, Rapid and Robust, Equipment-free, and Deliverable to end-users) to aid the development of useful diagnostic tools for these settings. These guidelines assume performance aspects such as sufficient accuracy, reliability, and validity. The purpose of this systematic narrative review is to examine the micronutrient sensor literature on its adherence towards the ASSURED criteria along with accuracy, reliability, and validation when developing micronutrient sensors for resource-limited settings. Keyword searches were conducted in three databases: Web of Science, PubMed, and Scopus and were based on 6-point inclusion criteria. A 16-question quality assessment tool was developed to determine the adherence towards quality and performance criteria. Of the 2,365 retrieved studies, 42 sensors were included based on inclusion/exclusion criteria. Results showed that improvements to the current sensor design are necessary, especially their affordability, user-friendliness, robustness, equipment-free, and deliverability within the ASSURED criteria, and accuracy and validity of the additional criteria to be useful in resource-limited settings. Although it requires further validation, the 16-question quality assessment tool can be used as a guide in the development of sensors for resource-limited settings.

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“…From this, our research group proposed quantitative test strip methods for the determination of different chemicals, e.g. iron [7], calcium [8] or nalidixic acid [9] in waters.…”

Section: Introductionmentioning

confidence: 99%

Test strip for determination of nitrite in water

et al. 2002

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A disposable test strip is proposed for the determination of nitrite in waters. The strip is an inert rectangular strip of polyester with a 6 mm o.d. circular, transparent and colorless film attached to its surface. This film contains the chemicals required for reaction and fixation of the dye formed, sulfanilamide, N-(1-naphthyl)ethylenediamine on Nafion. When the test strip is placed in an acidified (pH 2.0) sample solution containing nitrite a red-violet color develops; the absorbance of this is measured at 536 nm. The linear range of the method depends on the time of equilibration of the test strip with the sample solution. When the equilibration time was 45 min, the linear range was 8.9-500 microg L(-1) whereas for an equilibration time of 60 min it was 4.7-200 microg L(-1). The detection limit was 1.4 microg L(-1) for an equilibration time of 60 min. The precision of the method, expressed as RSD, was 8.8 % at 100.0 microg L(-1). The method was applied, and validated chemometrically, for the determination of nitrite in different types of water (spring, mineral, tap, well, and sea).

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Determination of calcium by a single-use optical sensor

Cited by 21 publications

References 22 publications

Potassium disposable optical sensor based on transflectance and cromaticity measurements

Potassium disposable optical sensor based on transflectance and cromaticity measurements

Evaluation of Micronutrient Sensors for Food Matrices in Resource‐Limited Settings: A Systematic Narrative Review

Test strip for determination of nitrite in water

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