Trace analysis of oil-in-water by using visible LED and metal waveguide capillary | Zendy

Min Bai | Zendy; Hui Huang | Zendy; Yan Yu | Zendy; Jian Hao | Zendy; Ji Zhang | Zendy; Jianchao Fan | Zendy; Jun Yan | Zendy

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Trace analysis of oil-in-water by using visible LED and metal waveguide capillary

Author(s) -

Min Bai,

Hui Huang,

Yan Yu,

Jian Hao,

Ji Zhang,

Jianchao Fan,

Jun Yan

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.014538

Subject(s) - cuvette , capillary action , materials science , optics , detection limit , emulsion , diesel fuel , optoelectronics , chemistry , chromatography , composite material , physics , biochemistry , organic chemistry

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.

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