Release Time:2019-03-13  Hits:

Indexed by: Journal Article

Date of Publication: 2016-06-27

Journal: OPTICS EXPRESS

Included Journals: Scopus、EI、SCIE

Volume: 24

Issue: 13

Page Number: 14538-14545

ISSN: 1094-4087

Abstract: Trace analysis of oil-in-water (O/W) has wide applications in life science, industry and environmental monitoring (such as oil spilling). In this paper, with the aid of surfactant, diesel was dispersed in water as O/W emulsion, which can be detected by using visible LED and metal-waveguide-capillary (MWC). Due to the enhancement of optical-path and related light-droplet interaction in MWC, detecting diesel of a concentration as low as 2.14 ng/ml was realized with a 7cm long MWC. The detection limit was improved 125 fold compared with that of commercial spectrophotometer with 1 cm-cuvette. The detecting system features compact, low cost and high sensitivity. (C) 2016 Optical Society of America