Share Email Print
cover

Journal of Nanophotonics

Selective solvent-free chromium detection using cadmium-free quantum dots
Author(s): Heather A. Meylemans; Alfred J. Baca; Lee R. Cambrea; Gregory S. Ostrom
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

Currently, the method of choice to test for the presence of chromium in water is to submit samples to a lab for testing. We present a simple field-ready test that is selective for the presence of chromium at concentrations of 100 ppb or greater. The Environmental Protection Agency maximum contaminant level (MCL) for total chromium is 100 ppb. This test uses a simple on/off fluorescent screening employing the use of silver indium sulfide (AgInS2) quantum dots (QDs). These QDs were impregnated into cotton pads to simplify field testing without the need for solvents or other liquid chemicals to be present. The change in fluorescence is instant and can be readily observed by eye with the use of a UV flashlight.

Paper Details

Date Published: 23 September 2017
PDF: 8 pages
J. Nanophoton. 11(3) 036022 doi: 10.1117/1.JNP.11.036022
Published in: Journal of Nanophotonics Volume 11, Issue 3
Show Author Affiliations
Heather A. Meylemans, Naval Air Warfare Ctr. Chemistry Div. (United States)
Alfred J. Baca, Naval Air Warfare Ctr. Weapons Div. (United States)
Lee R. Cambrea, Naval Air Warfare Ctr. Weapons Div. (United States)
Gregory S. Ostrom, Naval Air Warfare Ctr. Chemistry Div. (United States)


© SPIE. Terms of Use
Back to Top