Optical parameters extraction of soil and its microplastics contamination using terahertz spectroscopy.

M Meenaakumari, S Shoba, E Manikandan, K A Karthigeyan, S A Nithyapriyan, V Meikeerthivasan, S Hemeshwar

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Article in Heliyon, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Integrating nano crystal sensor with explainable deep learning for nutrients and microplastic-toxicity detection.Scientific reports · 2026
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5 · Who and what money

Authors and funding

7 authors.

M MeenaakumariSchool of Electronics Engineering, Vellore Institute of Technology, Chennai Campus, India.

S ShobaCentre for Advanced Data Sciences, Vellore Institute of Technology, Chennai Campus, India.

E ManikandanCentre for Advanced Materials and Innovative Technologies, Vellore Institute of Technology, Chennai Campus, India.

K A KarthigeyanDepartment of Electronics and Communication Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, India.

S A NithyapriyanSchool of Electronics Engineering, Vellore Institute of Technology, Chennai Campus, India.

V MeikeerthivasanSchool of Electronics Engineering, Vellore Institute of Technology, Chennai Campus, India.

S HemeshwarSchool of Electronics Engineering, Vellore Institute of Technology, Chennai Campus, India.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The primary focus of this study investigates the potential of continuous-wave terahertz frequency-domain spectroscopy(CW-THz-FDS) as a rapid, non-destructive technique for detecting microplastic contamination in soil. Focusing on low-density polyethylene (LDPE) as a model microplastic, we prepared soil mixtures with varying LDPE concentrations (1 %,5 %,10 %,15 % by weight). We used a THz-FDS system operating between 0.1 and 0.7 THz to analyze the optical properties (transmission coefficient, attenuation and refractive index) of these mixtures and LDPE samples separately. Notably both soil and LDPE particles were of micrometer scale. Our results revealed distinct, concentration-dependent variations in these properties. The refractive index for the higher concentration (15 %) ranged from 2.2 to 2.3, while the attenuation coefficient varies between 10 and 14 cm

Indexed as

Electro-optic samplingMicro plasticNon-invasiveTerahertz spectroscopy

Identifiers

PMID39403508

DOI10.1016/j.heliyon.2024.e38326

PMCPMC11471470

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LicenceCC BY-NC-ND

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.