A review on iodine speciation for environmental, biological and nutrition fields

Moreda-Piñeiro, Antonio; Romarís–Hortas, Vanessa; Bermejo-Barrera, Pilar

doi:10.1039/c0ja00272k

Cited by 102 publications

(66 citation statements)

References 214 publications

(236 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[16,17] However, LC has a wider range of application than CE due to the possible selection of variable stationary phases and mobile phases. Speciation analysis of iodine using LC and ICP-MS coupling, especially in water samples, was recently described by many authors.…”

Section: Instrumentationmentioning

confidence: 99%

Analysis of iodine and its species in animal tissues

Kaňa

Hrubá

Vosmanská

et al. 2015

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

A method allowing the determination of the total iodine content and iodine species in samples of animal tissues using inductively coupled plasma mass spectrometry (ICP-MS) as an elementspecific detector was developed. The total iodine content was determined after microwave digestion with 25% (w/w) water solution of tetramethylammonium hydroxide. The detection limit was 26.9 μg kg −1 I, and the accuracy of the determination was proven through the analysis of SRM "Non-Fat Milk Powder, " porcine liver, and Atlantic Cod muscle samples using standard addition methods. The extracts for the speciation analysis were prepared through sample dispersion in water using an Ultra-Turrax® T10. The extraction yields ranged from 46 to 84% for different types of tissues. The determination of the inorganic iodine species was performed using ion-exchange chromatography (PRP X100, mobile phase 100 mmol L −1 ammonium nitrate, pH 7.4) coupled to ICP-MS. A detection limit of 1.1 μg kg −1 I was obtained for both species. The organic iodine species were separated using size-exclusion chromatography (Superdex 75 column, mobile phase 20 mmol L −1 Tris-HCl, pH 7.5) and also detected using ICP-MS. Samples of porcine muscle, liver, kidney and thyroid gland, chicken muscle and liver and Atlantic Cod muscle were analyzed. The porcine thyroid gland and Atlantic Cod muscle samples were the richest in iodine (a more than 10× greater content of iodine than the other samples). With respect to the inorganic species, only iodide was found in the sample extracts. Conversely, many organic iodine species were found in the extracts.

show abstract

Section: Instrumentationmentioning

confidence: 99%

Analysis of iodine and its species in animal tissues

Kaňa

Hrubá

Vosmanská

et al. 2015

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

show abstract

“…As iodate ion is also present in drinking water samples [29][30][31] reduction of iodate to iodide is required prior to its determination by the Sandell-Kolthoff reaction. A solution of As(III) can be employed as the reducing agent.…”

Section: Efficiency Of the On-line Reduction Iodate To Iodidementioning

confidence: 99%

Microfluidic Analysis with Front-Face Fluorometric Detection for the Determination of Total Inorganic Iodine in Drinking Water

et al. 2018

View full text Add to dashboard Cite

A microfluidic method with front-face fluorometric detection was developed for the determination of total inorganic iodine in drinking water. A polydimethylsiloxane (PDMS) microfluidic device was employed in conjunction with the Sandell-Kolthoff reaction, in which iodide catalyzed the redox reaction between Ce(IV) and As(III). Direct alignment of an optical fiber attached to a spectrofluorometer was used as a convenient detector for remote front-face fluorometric detection. Trace inorganic iodine (IO3 -and I -) present naturally in drinking water was measured by on-line conversion of iodate to iodide for determination of total inorganic iodine. On-line conversion efficiency of iodate to iodide using the microfluidic device was investigated. Excellent conversion efficiency of 93 -103% (%RSD = 1.6 -11%) was obtained. Inorganic iodine concentrations in drinking water samples were measured, and the results obtained were in good agreement with those obtained by an ICP-MS method. Spiked sample recoveries were in the range of 86%(±5) -128%(±8) (n = 12). Interference of various anions and cations were investigated with tolerance limit concentrations ranging from 10 -6 to 2.5 M depending on the type of ions. The developed method is simple and convenient, and it is a green method for iodine analysis, as it greatly reduces the amount of toxic reagent consumed with reagent volumes in the microfluidic scale.

show abstract

“…But, a possible problem of consuming multiple commercial fortified foods could be the risk of overconsumption of micronutrients and iodine. Nevertheless, one is not likely to reach the toxic levels of iodine since the toxic symptoms appear at a level of consumption 20 times the RDA (1,100 lg day -1 ) [2]. Redox properties of iodine species are source of many problems during sample preparation.…”

Section: Introductionmentioning

confidence: 99%

“…Insufficient iodine intake can be responsible for the thyroid gland disease and fetus congenital anomalies [1,2]. WHO recommendation for daily iodine intake is varies from 50 (for infants) to 170 lg (for women during lactation).…”

Section: Introductionmentioning

confidence: 99%

Investigation of iodine bioavailability from chicken eggs versus iodized kitchen salt with in vitro method

Lipiec

Warowicka

Ruzik

et al. 2012

Eur Food Res Technol

View full text Add to dashboard Cite

The goal of the presented studies was to investigate speciation and bioavailability of iodine from chicken eggs versus iodized kitchen salt with an in vitro method. Determination of iodine total content in chicken eggs and iodized kitchen salt was carried out by inductively coupled plasma mass spectrometry (ICP MS). The majority of iodine was accumulated in the yolk-the concentration was even 37 times higher than in white. Chicken eggs were treated with buffer (Tris HCl pH = 7.5) and enzymatic extraction media and analyzed by size exclusion chromatography hyphenated with inductively coupled plasma mass spectrometry (SEC ICP MS). The enzymatic extraction being an in vitro bioavailability assessment method was based on two-stage digestion model simulating gastric (pepsin digestion) and intestinal (pancreatin digestion) juices. Speciation analyses along with bioavailability studies presented iodide as the major form in chicken eggs. The bioavailability was established as 33% from white and 10% from yolk and decreased with longer time of boiling. It allows to suggest that the majority of iodine remains in forms bound to non-digestible coagulated and waterinsoluble proteins.

show abstract

A review on iodine speciation for environmental, biological and nutrition fields

Cited by 102 publications

References 214 publications

Analysis of iodine and its species in animal tissues

Analysis of iodine and its species in animal tissues

Microfluidic Analysis with Front-Face Fluorometric Detection for the Determination of Total Inorganic Iodine in Drinking Water

Investigation of iodine bioavailability from chicken eggs versus iodized kitchen salt with in vitro method

Contact Info

Product

Resources

About