Detection of trace crude oil in surface sands by THz time-domain spectroscopy

REN Zewei; ZHAN Honglei; CHEN Sitong; LI Xinyu; ZHANG Yan; CHEN Ru; MENG Zhaohui; QIN Fankai; ZHAO Kun; BAO Rima

doi:10.5768/JAO202041.0203004

Journal of Applied Optics > 2020 > 41(2): 361-365. > DOI: 10.5768/JAO202041.0203004

REN Zewei, ZHAN Honglei, CHEN Sitong, LI Xinyu, ZHANG Yan, CHEN Ru, MENG Zhaohui, QIN Fankai, ZHAO Kun, BAO Rima. Detection of trace crude oil in surface sands by THz time-domain spectroscopy[J]. Journal of Applied Optics, 2020, 41(2): 361-365. DOI: 10.5768/JAO202041.0203004

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Detection of trace crude oil in surface sands by THz time-domain spectroscopy

Key Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection in Petroleum and Chemical Industry Federation, , School of New Energy and Materials, China University of Petroleum, Beijing 102249, China

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Received Date: July 25, 2019
Revised Date: October 22, 2019
Available Online: March 31, 2020

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Abstract

Terahertz time-domain spectroscopy (THz-TDS) was used to detected the trace crude oil mixed into the sands away from wells due to the high sensitivity to polar substance. A linear model was established between the trace crude oil concentration and the terahertz attenuation coefficient. Effective-medium theory was introduced to confirm the linear relationship between the terahertz dielectric constant and the crude oil content below 200 ppm. The research suggests that terahertz time-domain spectroscopy can be an effective method for detecting the trace crude oil leakage in sands.
- terahertz time-domain spectroscopy,
- trace detection,
- sands,
- crude oil

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Detection of trace crude oil in surface sands by THz time-domain spectroscopy