A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Optical Monitoring of Microplastics Filtrated from Wastewater Sludge and Suspended in Ethanol (2021)
Asamoah, B. O., Salmi, P., Räty, J., Ryymin, K., Talvitie, J., Karjalainen, A. K., Kukkonen, J. V. K., Roussey, M., & Peiponen, K.-E. (2021). Optical Monitoring of Microplastics Filtrated from Wastewater Sludge and Suspended in Ethanol. Polymers, 13(6), Article 871. https://doi.org/10.3390/polym13060871
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Asamoah, Benjamin O.; Salmi, Pauliina; Räty, Jukka; Ryymin, Kalle; Talvitie, Julia; Karjalainen, Anna K.; Kukkonen, Jussi V. K.; Roussey, Matthieu; Peiponen, Kai-Erik
Lehti tai sarja: Polymers
eISSN: 2073-4360
Julkaisuvuosi: 2021
Volyymi: 13
Lehden numero: 6
Artikkelinumero: 871
Kustantaja: MDPI
Julkaisumaa: Sveitsi
Julkaisun kieli: englanti
DOI: https://doi.org/10.3390/polym13060871
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/75025
Tiivistelmä
The abundance of microplastics (MPs) in the atmosphere, on land, and especially in water bodies is well acknowledged. In this study, we establish an optical method based on three different techniques, namely, specular reflection to probe the medium, transmission spectroscopy measurements for the detection and identification, and a speckle pattern for monitoring the sedimentation of MPs filtrated from wastewater sludge and suspended in ethanol. We used first Raman measurements to estimate the presence and types of different MPs in wastewater sludge samples. We also used microscopy to identify the shapes of the main MPs. This allowed us to create a teaching set of samples to be characterized with our optical method. With the developed method, we clearly show that MPs from common plastics, such as polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), and polyethylene (PE), are present in wastewater sludge and can be identified. Additionally, the results also indicate that the density of the plastics, which influences the sedimentation, is an essential parameter to consider in optical detection of microplastics in complex natural environments. All of the methods are in good agreement, thus validating the optics-based solution.
YSO-asiasanat: mikroroskat; jätemuovi; monitorointi; jätevesi; ilmaisimet; optiset laitteet
Vapaat asiasanat: microplastics; sludge; wastewater; Raman spectroscopy; laser speckle pattern; transmittance; sedimentation
Liittyvät organisaatiot
OKM-raportointi: Kyllä
VIRTA-lähetysvuosi: 2021
JUFO-taso: 1
