Direct Fluorescence Quantification of Chromium(VI) in Wastewater with Organic Nanoparticles Sensor
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- WANG Leyu
- College of Chemistry and Materials Science, Anhui Normal University
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- WANG Lun
- College of Chemistry and Materials Science, Anhui Normal University
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- XIA Tingting
- College of Chemistry and Materials Science, Anhui Normal University
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- DONG Ling
- College of Chemistry and Materials Science, Anhui Normal University
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- BIAN Guirong
- College of Chemistry and Materials Science, Anhui Normal University
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- CHEN Hongqi
- College of Chemistry and Materials Science, Anhui Normal University
Bibliographic Information
- Other Title
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- Direct Fluorescence Quantification of Chromium 6 in Wastewater with Organic Nanoparticles Sensor
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Description
Under ultrasonic irradiation, organic fluorescence nanoparticles have been prepared by a reprecipitation method. Compared with single organic fluorophores, these nanoparticles are brighter, more stable against photobleaching and more water-soluble. They also have high room-temperature fluorescence quantum yields (∼20%) and a long fluorescence lifetime (∼0.2 µs). Based on the fluorescence quenching of nanoparticles by chromium(VI), a method for the selective determination of chromium(VI) without the separation of chromium(III) in water was developed. Under the optimal conditions, the linear range of the calibration curve was 7.0 × 10-6 - 1.0 × 10-4 mol L-1. The detection limit was 2.8 × 10-6 mol L-1. The method is characterized by a short reaction time, stable fluorescence signals, simplicity and high selectivity. The present assay has been applied to the selective quantification of Cr(VI) in wastewater with satisfactory results.
Journal
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- Analytical Sciences
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Analytical Sciences 20 (7), 1013-1017, 2004
The Japan Society for Analytical Chemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390001204258185600
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- NII Article ID
- 130004440979
- 10013285564
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- NII Book ID
- AA10500785
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- COI
- 1:CAS:528:DC%2BD2cXlvFKqsbk%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 7004090
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- PubMed
- 15293393
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed