相关实验视频

Updated: Jan 17, 2026

A Colorimetric Method for Measuring Iron Content in Plants
07:12

A Colorimetric Method for Measuring Iron Content in Plants

Published on: September 7, 2018

22.8K

敏感的纸质试卷用于量化确定食品中的铁 (Fe2+) 使用优化的色度试剂

Yasaman Raiszadeh-Jahromi1, Mahmoud Rezazadeh-Bari1, Marjan Majdinasab2

  • 1Department of Food Science and Technology, Faculty of Agriculture, Urmia University, Urmia, 57561-51818, Iran.

Food chemistry
|September 23, 2025
PubMed
概括

一个新的纸质测试带提供了一种简单的方法来测量食物中的铁 (Fe2+). 这种使用o-phenanthroline的色度计方法为食品安全提供了准确和快速的铁量化.

关键词:
颜值测量传感器 颜色测量传感器食品矩阵分析 食品矩阵分析铁 (II) 的量化方法基于纸质的分析装置.反应剂优化对应剂的优化

更多相关视频

TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples09:51

TD-DFT Guided Advanced E-Eye Sensing Technique for On-site Quantification of Fe, Cr, F, and As in the Environmental, Biological, and Food Samples

Published on: September 19, 2025

429
Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay05:08

Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay

Published on: January 31, 2022

5.5K

相关概念视频

Redox Titration: Iodimetry and Iodometry01:23

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...
5.6K
Redox Titration: Overview01:21

Redox Titration: Overview

Redox titration is a chemical analysis technique used to determine the concentration of an unknown substance by measuring the electron transfer in a redox (reduction-oxidation) reaction. The process involves gradually adding a titrant with a known concentration of an oxidizing or reducing agent, to the analyte, the solution with an unknown concentration, until reaching the endpoint, which indicates the completion of the reaction between the two substances. Ensuring the analyte is in a single...
4.9K
Effects of EDTA on End-Point Detection Methods01:18

Effects of EDTA on End-Point Detection Methods

Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a...
624
Precipitation Titration: Endpoint Detection Methods01:19

Precipitation Titration: Endpoint Detection Methods

In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
5.3K