PPB-Level Detection of Benzene Diluted in Water by Bubbling Extraction System and UV Spectroscopy Based Measurements

Author

Camou, S. ; Shimizu, A. ; Horiuchi, T. ; Haga, T.

Author_Institution

NTT Microsystem Integration Lab., Wakamiya

fYear

2007

fDate

10-14 June 2007

Firstpage

261

Lastpage

264

Abstract

A new and easy-to-use portable sensor dedicated to the detection of benzene diluted in aqueous solution is presented. By connecting a bubbling device to a high efficiency UV detection cell, previously developed for a BTX air monitoring system, we could achieve a detection limit down to 100 ppb with a S/N of about 3. This sensitivity conforms to wastewater regulations in both America and Japan (resp. 500 and 120 ppb). The sensor also exhibits a linear response within the 0.1-3 ppm range and reproducibility. Measurements take less than 10 minutes, which makes this sensor particularly suitable for fast and accurate on-field monitoring applications.

Keywords

bubbles; chemical sensors; chemical variables measurement; organic compounds; ultraviolet spectroscopy; wastewater; America; Japan; PPB-level detection; UV detection cell; UV spectroscopy; air monitoring; aqueous solution; benzene detection; bubbling extraction; portable sensor; wastewater regulations; Computerized monitoring; Gas detectors; Joining processes; Laboratories; Microsensors; Optical waveguides; Phase detection; Sensor systems; Spectroscopy; Wastewater; Benzene detection; UV spectroscopy; bubbling; liquid sample;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference, 2007. TRANSDUCERS 2007. International

Conference_Location

Lyon

Print_ISBN

1-4244-0842-3

Electronic_ISBN

1-4244-0842-3

Type

conf

DOI

10.1109/SENSOR.2007.4300119

Filename

4300119