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Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS.

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Title: Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS.
Authors: Costa, Emily Cintia Tossi de A.1 (AUTHOR), Santana, Jildimara de Jesus2 (AUTHOR), Campos, Viviane de Oliveira3 (AUTHOR), Barbosa, Felipe Fernandes3 (AUTHOR), Patience, Gregory S.2 (AUTHOR) gregory-s.patience@polymtl.ca
Source: Canadian Journal of Chemical Engineering. May2026, Vol. 104 Issue 5, p2206-2224. 19p.
Subjects: Atomic spectroscopy, Trace element analysis, Chemical sample preparation, Chemical engineering, Analytical chemistry
Abstract: Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and polychromatic radiation passes through it. Monochromators isolate specific emission lines that enter the spectrophotometer. Flames atomize fine sprays produced by nebulizers in flame AAS (FAAS) (2000 K for air/acetylene and 3000 K for N2O/acetylene). In graphite furnace AAS (GF‐AAS), samples are dried then atomize at 1800 to 3000 K. AAS remains a reliable, affordable, and robust technique for detecting trace metals, metalloids (e.g., As, Sb) and even non‐metals, such as P and Se, securing its place alongside modern plasma techniques that have multi‐element capability. Advances in electronics and instrumentation have made AAS faster, more precise, and easier to operate. High‐resolution continuous source AAS (HR‐CS AAS) improves accuracy and handles background correction better. Unlike XRF, AAS is a destructive technique to quantify elemental concentration; however, its ability to deliver high sensitivity and selectivity continues to make it indispensable for analytical chemistry. Coupling AAS with pre‐concentration and extraction strategies enhances sensitivity to detect trace metals even in complex matrices. A bibliometric analysis clusters AAS research into categories centred on: (1) waste water, catalysis, and nanoparticles, (2) FAAS and transition metals (Cr, Co, Ni), (3) microbial applications and Cu, Fe, Ag, Zn, and (4) soil, pollution, and metals (Pb, Cd, Hg). [ABSTRACT FROM AUTHOR]
Copyright of Canadian Journal of Chemical Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Data: Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS.
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  Data: <searchLink fieldCode="JN" term="%22Canadian+Journal+of+Chemical+Engineering%22">Canadian Journal of Chemical Engineering</searchLink>. May2026, Vol. 104 Issue 5, p2206-2224. 19p.
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  Data: Elements absorb electromagnetic radiation (light) of a specific wavelength in proportion to the number of atoms in its path. As the atoms absorb this light energy, electrons rise from the ground state to an excited state. In atomic absorption spectrometry (AAS), high temperatures produce clouds of atoms from the sample (atomization) and polychromatic radiation passes through it. Monochromators isolate specific emission lines that enter the spectrophotometer. Flames atomize fine sprays produced by nebulizers in flame AAS (FAAS) (2000 K for air/acetylene and 3000 K for N2O/acetylene). In graphite furnace AAS (GF‐AAS), samples are dried then atomize at 1800 to 3000 K. AAS remains a reliable, affordable, and robust technique for detecting trace metals, metalloids (e.g., As, Sb) and even non‐metals, such as P and Se, securing its place alongside modern plasma techniques that have multi‐element capability. Advances in electronics and instrumentation have made AAS faster, more precise, and easier to operate. High‐resolution continuous source AAS (HR‐CS AAS) improves accuracy and handles background correction better. Unlike XRF, AAS is a destructive technique to quantify elemental concentration; however, its ability to deliver high sensitivity and selectivity continues to make it indispensable for analytical chemistry. Coupling AAS with pre‐concentration and extraction strategies enhances sensitivity to detect trace metals even in complex matrices. A bibliometric analysis clusters AAS research into categories centred on: (1) waste water, catalysis, and nanoparticles, (2) FAAS and transition metals (Cr, Co, Ni), (3) microbial applications and Cu, Fe, Ag, Zn, and (4) soil, pollution, and metals (Pb, Cd, Hg). [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Canadian Journal of Chemical Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/cjce.70314
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        Text: English
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        PageCount: 19
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      – SubjectFull: Atomic spectroscopy
        Type: general
      – SubjectFull: Trace element analysis
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      – SubjectFull: Chemical sample preparation
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      – SubjectFull: Chemical engineering
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      – SubjectFull: Analytical chemistry
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      – TitleFull: Experimental methods in chemical engineering: Atomic absorption spectrometry—AAS.
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            NameFull: Costa, Emily Cintia Tossi de A.
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              M: 05
              Text: May2026
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              Y: 2026
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