Application of thermal lens microscopy (TLM) for measurement of Cr(VI) traces in wastewater

L. A. Hernández-Carabalí; E. Cedeño; A. Mantilla; S. Alvarado; H. Cabrera; A. M. Mansanares; A. Calderón; E. Marín

doi:10.1016/j.jenvman.2018.11.044

Application of thermal lens microscopy (TLM) for measurement of Cr(VI) traces in wastewater

L. A. Hernández-Carabalí, E. Cedeño, A. Mantilla, S. Alvarado, H. Cabrera, A. M. Mansanares, A. Calderón, E. Marín

Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada (CICATA), Unidad Legaria

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

In this work, we demonstrate for the first time that Thermal Lens Microscopy technique (TLM) can be applied to monitor the dynamics of a photocatalytic process in-situ. The photocatalytic reduction of hexavalent chromium -Cr(VI)- in aqueous solution using CdS and irradiated with visible light is monitored by TLM. Since the values of Cr(VI) concentration obtained after the photocatalytic process were close to those imposed by the international regulations for drinking water, the use of TLM allowed its measurement with a better reliability than with UV spectroscopy, usually used in this kind of analysis.

Original language	English
Pages (from-to)	305-309
Number of pages	5
Journal	Journal of Environmental Management
Volume	232
DOIs	https://doi.org/10.1016/j.jenvman.2018.11.044
State	Published - 15 Feb 2019

Keywords

CdS photocatalyst
Cr(VI)
Photocatalysis
Photoreduction
Photothermal
Thermal lens microscopy

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10.1016/j.jenvman.2018.11.044

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title = "Application of thermal lens microscopy (TLM) for measurement of Cr(VI) traces in wastewater",

abstract = "In this work, we demonstrate for the first time that Thermal Lens Microscopy technique (TLM) can be applied to monitor the dynamics of a photocatalytic process in-situ. The photocatalytic reduction of hexavalent chromium -Cr(VI)- in aqueous solution using CdS and irradiated with visible light is monitored by TLM. Since the values of Cr(VI) concentration obtained after the photocatalytic process were close to those imposed by the international regulations for drinking water, the use of TLM allowed its measurement with a better reliability than with UV spectroscopy, usually used in this kind of analysis.",

keywords = "CdS photocatalyst, Cr(VI), Photocatalysis, Photoreduction, Photothermal, Thermal lens microscopy",

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T1 - Application of thermal lens microscopy (TLM) for measurement of Cr(VI) traces in wastewater

AU - Hernández-Carabalí, L. A.

AU - Cedeño, E.

AU - Mantilla, A.

AU - Alvarado, S.

AU - Cabrera, H.

AU - Mansanares, A. M.

AU - Calderón, A.

AU - Marín, E.

PY - 2019/2/15

Y1 - 2019/2/15

N2 - In this work, we demonstrate for the first time that Thermal Lens Microscopy technique (TLM) can be applied to monitor the dynamics of a photocatalytic process in-situ. The photocatalytic reduction of hexavalent chromium -Cr(VI)- in aqueous solution using CdS and irradiated with visible light is monitored by TLM. Since the values of Cr(VI) concentration obtained after the photocatalytic process were close to those imposed by the international regulations for drinking water, the use of TLM allowed its measurement with a better reliability than with UV spectroscopy, usually used in this kind of analysis.

AB - In this work, we demonstrate for the first time that Thermal Lens Microscopy technique (TLM) can be applied to monitor the dynamics of a photocatalytic process in-situ. The photocatalytic reduction of hexavalent chromium -Cr(VI)- in aqueous solution using CdS and irradiated with visible light is monitored by TLM. Since the values of Cr(VI) concentration obtained after the photocatalytic process were close to those imposed by the international regulations for drinking water, the use of TLM allowed its measurement with a better reliability than with UV spectroscopy, usually used in this kind of analysis.

KW - CdS photocatalyst

KW - Cr(VI)

KW - Photocatalysis

KW - Photoreduction

KW - Photothermal

KW - Thermal lens microscopy

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DO - 10.1016/j.jenvman.2018.11.044

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SN - 0301-4797

VL - 232

SP - 305

EP - 309

JO - Journal of Environmental Management

JF - Journal of Environmental Management

ER -

Application of thermal lens microscopy (TLM) for measurement of Cr(VI) traces in wastewater

Abstract

Keywords

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