Cost-effective smartphone-based method for low range chemical oxygen demand analysis.

Inalmar D Barbosa Segundo, Jussara C Cardozo, Pollyana Souza Castro, Amanda D Gondim, Elisama V Dos Santos, Carlos A Martínez-Huitle

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Article in MethodsX, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Inalmar D Barbosa SegundoRenewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, Natal, RN CEP 59078-970, Brazil.

Jussara C CardozoRenewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, Natal, RN CEP 59078-970, Brazil.

Pollyana Souza CastroInstitute of Chemistry, Federal University of Rio Grande do Norte, Av. Salgado Filho 3000, Lagoa Nova, Natal, RN CEP 59078-970, Brazil.

Amanda D GondimRenewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, Natal, RN CEP 59078-970, Brazil.

Elisama V Dos SantosRenewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, Natal, RN CEP 59078-970, Brazil.

Carlos A Martínez-HuitleRenewable Energies and Environmental Sustainability Research Group, Institute of Chemistry, Federal University of Rio Grande do Norte, Campus Universitário, Av. Salgado Filho 3000, Lagoa Nova, Natal, RN CEP 59078-970, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aiming the decentralization of monitoring policies and to facilitate the work of researchers, mainly in developing countries, the present method deals with the explanation of a simple and rapid protocol for chemical oxygen demand (COD) analysis through the use of digital smartphone devices coupled with a camera and a free app available for Android operating system that recognizes HSV (hue, saturation, value). The calibration of the method is done based on the theoretical values of potassium hydrogen phthalate for a proper and reliable build of the calibration curve by using the smartphone-based technique and the digested samples of COD. The coefficient of determination (R

Indexed as

CODDigital image colorimetryHSV image processingSmartphone-based method for low range chemical oxygen demand analysisSmartphone-based technology

Identifiers

PMID37577171

DOI10.1016/j.mex.2023.102300

PMCPMC10415782

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