期刊
APPLIED PHYSICS LETTERS
卷 96, 期 13, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3373325
关键词
calorimetry; chemical analysis; chemical sensors; chemical variables measurement; dairy products; food safety; gold; precipitation (physical chemistry)
资金
- NSF CAREER [CMMI-0846323]
- NSF Mechanics of Materials [CMMI-0856492]
- V Foundation for Cancer Research V Scholars
- NSF Center for Scalable and Integrated NanoManufacturing (SINAM) [DMI-0327077]
- Wallace H. Coulter Foundation Early Career
- NSF National Center for Learning & Teaching in Nanoscale Science and Engineering (NCLT)
- NIH [U54 A1065359]
A strategy for rapid and facile detection of melamine in food and other substances is described. Unmodified gold nanoparticles enable a colorimetric signal output that is amplified through integration by precipitation formation via a chemical component specific to melamine. The sensitivity was determined to be similar to 40 ppb with a two standard deviation cutoff.
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