A fluorometric paper test for chromium(VI) based on the use of N-doped carbon dots

Kun Hua Lu; Jia Hui Lin; Cheng Yu Lin; Chien Fu Chen; Yi Chun Yeh

doi:10.1007/s00604-019-3337-5

A fluorometric paper test for chromium(VI) based on the use of N-doped carbon dots

Kun Hua Lu, Jia Hui Lin, Cheng Yu Lin, Chien Fu Chen, Yi Chun Yeh^*

^*Corresponding author for this work

Department of Chemistry

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

46 Citations (Scopus)

Abstract

Water-soluble nitrogen-doped carbon quantum dots (C-dots) were fabricated by microwave-induced decomposition of the precursor materials citric acid and N,N′-bis(2-aminoethyl)-1,2-ethanediamine. The C-dots were placed on portable paper strips with novel origami designs to simplified user operations. The intensity of the blue fluorescence, best measured at excitation/emission wavelengths of 330/420 nm, depends on the pH value in the range from pH 2 to 12. The C-dots on the paper stripe are shown to be a sensitive fluorescent probe for chromium(VI) via an inner filter effect. Response is linear in the 0.08 to 1 mM concentration range, and the detection limit (at S/N = 3) is 0.14 mM. The test was applied to the determination of chromium(VI) in (spiked) environmental water samples. [Figure not available: see fulltext.].

Original language	English
Article number	227
Journal	Microchimica Acta
Volume	186
Issue number	4
DOIs	https://doi.org/10.1007/s00604-019-3337-5
Publication status	Published - 2019 Apr 1

Keywords

Carbon dots
Chromium(VI)
Environmental analysis
Fluorescence
Origami
Paper microfluidic
Three-dimensional paper analytical devices

ASJC Scopus subject areas

Analytical Chemistry

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10.1007/s00604-019-3337-5

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title = "A fluorometric paper test for chromium(VI) based on the use of N-doped carbon dots",

abstract = "Water-soluble nitrogen-doped carbon quantum dots (C-dots) were fabricated by microwave-induced decomposition of the precursor materials citric acid and N,N′-bis(2-aminoethyl)-1,2-ethanediamine. The C-dots were placed on portable paper strips with novel origami designs to simplified user operations. The intensity of the blue fluorescence, best measured at excitation/emission wavelengths of 330/420 nm, depends on the pH value in the range from pH 2 to 12. The C-dots on the paper stripe are shown to be a sensitive fluorescent probe for chromium(VI) via an inner filter effect. Response is linear in the 0.08 to 1 mM concentration range, and the detection limit (at S/N = 3) is 0.14 mM. The test was applied to the determination of chromium(VI) in (spiked) environmental water samples. [Figure not available: see fulltext.].",

keywords = "Carbon dots, Chromium(VI), Environmental analysis, Fluorescence, Origami, Paper microfluidic, Three-dimensional paper analytical devices",

author = "Lu, {Kun Hua} and Lin, {Jia Hui} and Lin, {Cheng Yu} and Chen, {Chien Fu} and Yeh, {Yi Chun}",

note = "Publisher Copyright: {\textcopyright} 2019, Springer-Verlag GmbH Austria, part of Springer Nature.",

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T1 - A fluorometric paper test for chromium(VI) based on the use of N-doped carbon dots

AU - Lu, Kun Hua

AU - Lin, Jia Hui

AU - Lin, Cheng Yu

AU - Chen, Chien Fu

AU - Yeh, Yi Chun

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Water-soluble nitrogen-doped carbon quantum dots (C-dots) were fabricated by microwave-induced decomposition of the precursor materials citric acid and N,N′-bis(2-aminoethyl)-1,2-ethanediamine. The C-dots were placed on portable paper strips with novel origami designs to simplified user operations. The intensity of the blue fluorescence, best measured at excitation/emission wavelengths of 330/420 nm, depends on the pH value in the range from pH 2 to 12. The C-dots on the paper stripe are shown to be a sensitive fluorescent probe for chromium(VI) via an inner filter effect. Response is linear in the 0.08 to 1 mM concentration range, and the detection limit (at S/N = 3) is 0.14 mM. The test was applied to the determination of chromium(VI) in (spiked) environmental water samples. [Figure not available: see fulltext.].

AB - Water-soluble nitrogen-doped carbon quantum dots (C-dots) were fabricated by microwave-induced decomposition of the precursor materials citric acid and N,N′-bis(2-aminoethyl)-1,2-ethanediamine. The C-dots were placed on portable paper strips with novel origami designs to simplified user operations. The intensity of the blue fluorescence, best measured at excitation/emission wavelengths of 330/420 nm, depends on the pH value in the range from pH 2 to 12. The C-dots on the paper stripe are shown to be a sensitive fluorescent probe for chromium(VI) via an inner filter effect. Response is linear in the 0.08 to 1 mM concentration range, and the detection limit (at S/N = 3) is 0.14 mM. The test was applied to the determination of chromium(VI) in (spiked) environmental water samples. [Figure not available: see fulltext.].

KW - Carbon dots

KW - Chromium(VI)

KW - Environmental analysis

KW - Fluorescence

KW - Origami

KW - Paper microfluidic

KW - Three-dimensional paper analytical devices

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A fluorometric paper test for chromium(VI) based on the use of N-doped carbon dots

Abstract

Keywords

ASJC Scopus subject areas

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