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Publication
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| Title of Article |
A simple strategy to enhance the sensitivity of fluorescent sensor-based CdS quantum dots by using a surfactant for Hg2+ detection |
| Date of Acceptance |
27 July 2021 |
| Journal |
| Title of Journal |
Analytical Methods |
| Standard |
ISI |
| Institute of Journal |
Royal Society of Chemistry (RSC) |
| ISBN/ISSN |
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| Volume |
2021 |
| Issue |
13 |
| Month |
July |
| Year of Publication |
2021 |
| Page |
4069-4078 |
| Abstract |
A simple strategy to enhance the detection sensitivity of fluorescent sensor-based CdS quantum dots (CdS
QDs) for the detection of mercury ions (Hg2+) was demonstrated. L-Cysteine-capped CdS QDs (L-Cyst-CdS
QDs) were synthesized and utilized as a probe for selective detection of Hg2+. The fluorescence intensity of
the L-Cyst-CdS QDs was quenched in the presence of Hg2+. However, the detection sensitivity was
unsatisfactory. Upon the addition of sodium dodecyl sulfate (SDS), the fluorescence intensity of L-CystCdS QDs can be effectively enhanced. On the other hand, the fluorescence intensity of the L-Cyst-CdS
QDs in the presence of SDS (SDS@L-Cyst-CdS QDs) was able to be dramatically decreased with the
addition of Hg2+. Furthermore, the proposed sensor displayed excellent selectivity towards Hg2+
compared to other cations. Under optimized conditions, the proposed sensor could be applied to detect
trace amounts of Hg2+ with a limit of detection of approximately 36 nM. The applicability of this sensor
was demonstrated by the determination of Hg2+ in real water samples, and the results agreed with those
obtained from cold vapor atomic absorption spectrometry (CVAAS). |
| Keyword |
Chemical sensor, fluorescent sensor, quantum dots, surfactant, sensitivity, selectivity |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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