Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and refractory oxide ion...

Redox Titration: Iodimetry and Iodometry

Redox Titration: Iodimetry and Iodometry

Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...

Precipitation Titration Curve: Analysis

Precipitation Titration Curve: Analysis

The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...

Atomic Absorption Spectroscopy: Interference

Atomic Absorption Spectroscopy: Interference

Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...

Precipitation of Ions

Precipitation of Ions

Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:

Ion-Exchange Chromatography

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Acceleration of Positive Muons by a Radio-Frequency Cavity.

Physical review letters·2025

Same author

Evidence for the Cusp Effect in η' Decays into ηπ^{0}π^{0}.

Physical review letters·2023

Same author

Study of the Semileptonic Decay Λ_{c}^{+}→Λe^{+}ν_{e}.

Physical review letters·2022

Same author

Observation of an Isoscalar Resonance with Exotic J^{PC}=1^{-+} Quantum Numbers in J/ψ→γηη^{'}.

Physical review letters·2022

Same author

Observation of an a_{0}-like State with Mass of 1.817 GeV in the Study of D_{s}^{+}→K_{S}^{0}K^{+}π^{0} Decays.

Physical review letters·2022

Same author

First Observation of the Direct Production of the χ_{c1} in e^{+}e^{-} Annihilation.

Physical review letters·2022

Search research articles

Related Experiment Video

Updated: Jun 28, 2026

Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction

Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction

Published on: April 10, 2026

Interference from iodide in the determination of trace level selenium.

C Ericzon¹, J Pettersson, A Olin

¹Department of Analytical Chemistry, Uppsala University, P.O. Box 531, S-751 21 Uppsala, Sweden.

|July 1, 1990

Summary

The reaction rate between iodide and selenium(IV) increases with acidity in hydrochloric acid. Iodide can cause selenium loss during analysis, necessitating its removal.

More Related Videos

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Published on: May 16, 2014

Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis

Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis

Published on: August 22, 2018

Related Experiment Videos

Last Updated: Jun 28, 2026

Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction

Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction

Published on: April 10, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Published on: May 16, 2014

Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis

Analysis of AtHIRD11 Intrinsic Disorder and Binding Towards Metal Ions by Capillary Gel Electrophoresis and Affinity Capillary Electrophoresis

Published on: August 22, 2018

Area of Science:

Analytical Chemistry
Inorganic Chemistry

Background:

Selenium speciation is crucial for environmental and biological studies.
Trace-level selenium determination often involves redox reactions.
The presence of iodide can interfere with selenium analysis.

Purpose of the Study:

To determine the reaction rate between iodide and selenium(IV) in hydrochloric acid.
To investigate the influence of acidity on this reaction.
To identify potential interferences in selenium determination methods.

Main Methods:

Kinetic studies of the iodide-selenium(IV) reaction.
Experiments conducted in 1-6M hydrochloric acid.
Measurement of reaction half-lives under varying conditions.

Main Results:

The reaction rate between iodide and selenium(IV) increases significantly with increasing hydrochloric acid concentration.
Selenium can be lost as elemental selenium due to iodide interference.
A table of reaction half-lives is provided for different conditions.

Conclusions:

The acidity of hydrochloric acid strongly influences the iodide-selenium(IV) reaction rate.
Iodide interference must be managed for accurate total selenium determination.
A method for iodide removal is proposed to prevent selenium loss.