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Related Concept Videos

Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing nebulizer...
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
Atomic Absorption Spectroscopy: Overview01:27

Atomic Absorption Spectroscopy: Overview

Atomic absorption spectroscopy (AAS) is a technique used to analyze elements by measuring electromagnetic radiation (EMR) absorbed by atoms, which causes them to transition to a higher-energy orbit. The most crucial step in AAS is atomization, where the analyte is converted into gas-phase atoms, typically through a flame or furnace. Some of these atoms become thermally excited in the flame, while most remain in the ground state.
When irradiated by EMR of a particular wavelength, these...
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...

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Related Experiment Video

Updated: May 21, 2026

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
09:51

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

Trace level arsenic quantification through cloud point extraction: application to biological and environmental

Kempahanumakkagari Suresh Kumar1, Malingappa Pandurangappa

  • 1Department of Studies in Chemistry, Bangalore University, Central College Campus, Dr. Ambedkar Veedhi, Bangalore 5600 01, India.

Thescientificworldjournal
|June 6, 2012
PubMed
Summary
This summary is machine-generated.

A new solvent-free method accurately quantifies trace arsenic levels. This approach uses a blue complex formation and extraction for sensitive arsenic detection in diverse samples.

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Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
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Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.

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Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
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Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

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Last Updated: May 21, 2026

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
09:51

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

Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.
08:21

Determination of Inorganic Arsenic in a Wide Range of Food Matrices using Hydride Generation - Atomic Absorption Spectrometry.

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Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
08:01

Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide

Published on: June 28, 2019

Area of Science:

  • Analytical Chemistry
  • Environmental Science
  • Spectroscopy

Background:

  • Arsenic contamination poses significant health and environmental risks.
  • Accurate quantification of trace arsenic levels is crucial for monitoring and remediation.
  • Existing extraction methods can be complex and environmentally burdensome.

Purpose of the Study:

  • To develop a sensitive and solvent-free extraction protocol for trace arsenic quantification.
  • To establish a reliable method for determining both As(III) and As(V) in various sample matrices.
  • To optimize the reaction conditions for the formation and extraction of the arsenomolybdenum blue complex.

Main Methods:

  • Solvent-free extraction utilizing Triton X-114 surfactant phase.
  • Formation of a blue-colored arsenomolybdenum blue complex through reaction with molybdate, antimony (III), and ascorbic acid.
  • Spectrophotometric measurement of the complex's absorbance at 690 nm.

Main Results:

  • Achieved a detection limit of 1 ng/mL for arsenic.
  • Established a working range of 10-200 ng/mL for arsenic quantification.
  • Demonstrated a low relative standard deviation of 1.2%, indicating high precision.
  • Successfully applied the method to environmental, biological, and chemical samples.

Conclusions:

  • The developed solvent-free protocol offers a sensitive, efficient, and environmentally friendly approach for trace arsenic determination.
  • The method's applicability across diverse sample types highlights its versatility.
  • This technique provides a valuable tool for accurate arsenic monitoring in environmental and biological contexts.