Surveying iodine nutrition using kinetic spectrophotometry: an integrative laboratory experiment in analytical chemistry for population health

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dc.creatorAdriana Nori de Macedo
dc.creatorStellena Mathiaparanam
dc.creatorRitchie ly
dc.creatorPhilip Britz-Mckibbin
dc.date.accessioned2022-11-09T18:48:32Z
dc.date.accessioned2025-09-08T23:32:50Z
dc.date.available2022-11-09T18:48:32Z
dc.date.issued2018
dc.identifier.doihttps://doi.org/10.1021/acs.jchemed.7b00710
dc.identifier.issn0021-9584
dc.identifier.urihttps://hdl.handle.net/1843/47089
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Chemical Education
dc.rightsAcesso Restrito
dc.subjectQuímica analítica
dc.subjectAnatomia
dc.subjectNutrição
dc.subjectAnions
dc.subjectCalibração
dc.subjectIodo
dc.subjectEspectroscopia de ultravioleta
dc.subjectDeficiência de iodo
dc.subject.otherAnalytical chemistry
dc.subject.otherLaboratory instruction
dc.subject.otherSecond-year undergraduate
dc.subject.otherLearning/manipulatives hands-On
dc.subject.otherInquiry-based/discovery
dc.subject.otherLearning Interdisciplinary/multidisciplinary
dc.subject.otherKinetics
dc.subject.otherUV−vis spectroscopy
dc.subject.otherOxidation/reduction
dc.subject.otherQuantitative analysis
dc.titleSurveying iodine nutrition using kinetic spectrophotometry: an integrative laboratory experiment in analytical chemistry for population health
dc.typeArtigo de periódico
local.citation.epage1034
local.citation.issue6
local.citation.spage1029
local.citation.volume95
local.description.resumoNew experiments for undergraduate students are needed to stimulate experiential learning in the laboratory while providing valuable training for future career development. Iodine deficiency remains a major public health concern that is monitored by measuring the median urinary iodide concentration of a population. In this context, we have introduced a kinetic spectrophotometric experiment based on the classic Sandell–Kolthoff reaction for second-year undergraduate students in analytical chemistry. This two-day laboratory experiment incorporates principles of quantitative chemical analysis, redox chemistry, reaction kinetics, optical spectroscopy, sample pretreatment, external calibration, method validation, statistical analysis, and quality assurance. Additionally, students gain real-world experience of implementation of a reliable analytical method used in global health initiatives to combat iodine deficiency, including participation in a round-robin study with the CDC. This colorimetric assay is widely used for continuous monitoring of mandatory iodized table salt programs to prevent the risk of iodine deficiency disorders, including developmental delays and intellectual impairment in children.
local.identifier.orcidhttps://orcid.org/0000-0001-9296-3223
local.identifier.orcidhttps://orcid.org/0000-0002-4125-3755
local.identifier.orcidhttps://orcid.org/0000-0001-8524-6314
local.identifier.orcidhttps://orcid.org/0000-0003-1185-3749
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://pubs.acs.org/doi/10.1021/acs.jchemed.7b00710

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