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http://krishi.icar.gov.in/jspui/handle/123456789/24094
Title: | Utilization of Red-Light-Emitting CdTe Nanoparticles for the Trace-Level Detection of Harmful Herbicides in Adulterated Food and Agricultural Crops. |
Other Titles: | Not Available |
Authors: | Nilanjan Dey Deepa Bhagat Durgadas Cherukaraveedu Bhattacharya S |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | Department of Organic Chemistry, Indian Institute of Science, Bangalore ICAR::National Bureau of Agricultural Insect Resources Department of Organic Chemistry, Indian Institute of Science, Bangalore Department of Organic Chemistry, Indian Institute of Science, Bangalore |
Published/ Complete Date: | 2017-01-03 |
Project Code: | Not Available |
Keywords: | nanoparticles; nitrogen heterocycles; paraquat; quantum dots; sensors |
Publisher: | Wiley Online Library |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | Red-light-emitting water-soluble semiconducting quantum dots (QDs) were synthesized by using a wide variety of commercially available thiol-type capping agents. QDs with a negatively charged nanosurface showed excellent selectivity for paraquat (PQ) at pH 7.4 over other commonly encountered pesticides/herbicides, including diquat (DQ). The presence of a 4,4'-bis-pyridinium unit in PQ enabled it to initiate long-range aggregation, thereby leading to the formation of nanostructures with excellent emission-quenching behavior. Precoated quartz plates were developed as a low-cost, portable sensor for the on-site detection of PQ in both natural water and human urine. Estimation of the PQ concentration was performed in different commercial formulations and the detection of PQ contamination in adulterated dairy product was also achieved with excellent sensitivity. Finally, we screened more than 50 different food items, including vegetables, fruits, cereals, and fodders, to construct a generalized marker for any residual PQ in such specimens. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Journal |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Chemistry - An Asian Journal |
NAAS Rating: | 10.06 |
Volume No.: | 12(1) |
Page Number: | 76-85 |
Name of the Division/Regional Station: | Division of Germplasm Conversion and Utilisation |
Source, DOI or any other URL: | https://doi.org/10.1002/asia.201601302 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/24094 |
Appears in Collections: | CS-NBAIR-Publication |
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