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Publication
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| Title of Article |
New approach for detection of chromate ion by preconcentration with mixed metal hydroxide coupled with fluorescence sensing of copper nanoclusters |
| Date of Acceptance |
2 May 2017 |
| Journal |
| Title of Journal |
Microchimica Acta |
| Standard |
ISI |
| Institute of Journal |
Springer |
| ISBN/ISSN |
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| Volume |
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| Issue |
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| Month |
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| Year of Publication |
2017 |
| Page |
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| Abstract |
The authors describe a two-step strategy for in-situ dispersive solid phase extraction (is-dSPE) of Cr(VI) ion (chromate) prior to its determination by using copper nanoclusters capped with 4,6-diamino-2-mercaptopyrimidine (DAMP-CuNCs) as a fluorescent probe. By emulating the formation of layered double hydroxides and taking advantage of their compositions, the extraction of chromate is accomplished by rapidly dispersing a suspension of mixed hydroxides of Mg2+ and Al3+ into the sample solution. After enrichment, chromate is directly quantified through selective quenching of the fluorescence of DAMP-CuNCs. This results from an inner filter effect caused by chromate only, while other anions have no effect. Under optimized conditions, the method has a linear response in the 1–7 μM chromate concentration range, and the lower limit of detection is 0.31 μM. The is-dSPE has improved detection sensitivity and has provided a highly selective response. It was successfully applied to the determination of chromate in (spiked) water samples, and the results agreed well with data obtained by ICP-OES. |
| Keyword |
Metal nanoclusters, Inner filter effect, Layered double hydroxide, Solid phase extraction, Microextraction, Toxic anion, Carcinogen |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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