Rapid detection of acrylamide in food using a fluorescent sensing method based on functional CdSe/ZnS quantum dots

Author

Qinqin Hu ; Xiahong Xu ; Zhanming Li ; Ying Zhang ; Jianping Wang ; Yanbin Li

Author_Institution

Coll. of Biosystem Eng. & Food Sci., Zhejiang Univ., Hangzhou, China

fYear

2013

fDate

3-6 Nov. 2013

Firstpage

1

Lastpage

4

Abstract

A fluorescent sensing method based on functional CdSe/ZnS quantum dots (QDs) was investigated for rapid detection of acrylamide. The functional QDs were prepared by binding them with N-acryloxysuccinimide (NAS). Then NAS-QDs complexes were mixed with acrylamide solutions, and polymerization occurred in the presence of photo-initiator under UV irradiation. The reaction increased the distance between QDs, leading to the increase of fluorescence intensity compared with that no acrylamide existed. The detection limit and linear range using this method were 5 × 10^-7 mol L^-1 and 5 × 10^-7 to 1 × 10^-2 mol L^-1, respectively. Compared with LC-MS/MS method, this method could be applied to food detection with similar sensitivity and selectivity but less time and cost.

Keywords

II-VI semiconductors; cadmium compounds; chemical sensors; fluorescence; food processing industry; optical sensors; organic compounds; polymerisation; semiconductor quantum dots; wide band gap semiconductors; zinc compounds; CdSe-ZnS; N-acryloxysuccinimide; UV irradiation; detection limit; fluorescent sensing method; food; functional CdSe/ZnS quantum dots; linear range; photo-initiator; polymerization; rapid acrylamide detection; Biosensors; Chemicals; Fluorescence; Polymers; Quantum dots; Radiation effects;

fLanguage

English

Publisher

ieee

Conference_Titel

SENSORS, 2013 IEEE

Conference_Location

Baltimore, MD

ISSN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2013.6688228

Filename

6688228