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Beryllium Contamination in Soils: Insights from Sorption and Precipitation Studies Under Different Conditions
In: HAZMAT-D-21-15433
SSRN
Hidden values in bauxite residue (red mud): Recovery of metals
In: Waste management: international journal of integrated waste management, science and technology, Band 34, Heft 12, S. 2662-2673
ISSN: 1879-2456
Perfluorooctane sulfonate release pattern from soils of fire training areas in Australia and its bioaccumulation potential in the earthworm Eisenia fetida
In: Environmental science and pollution research: ESPR, Band 22, Heft 12, S. 8902-8910
ISSN: 1614-7499
Ecotoxicity of chemically stabilised metal(loid)s in shooting range soils
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 100, S. 201-208
ISSN: 1090-2414
Effectiveness of chemical amendments for stabilisation of lead and antimony in risk-based land management of soils of shooting ranges
In: Environmental science and pollution research: ESPR, Band 22, Heft 12, S. 8942-8956
ISSN: 1614-7499
Metal-tolerant PAH-degrading bacteria: development of suitable test medium and effect of cadmium and its availability on PAH biodegradation
In: Environmental science and pollution research: ESPR, Band 22, Heft 12, S. 8957-8968
ISSN: 1614-7499
Influence of phosphate on toxicity and bioaccumulation of arsenic in a soil isolate of microalga Chlorella sp
In: Environmental science and pollution research: ESPR, Band 23, Heft 3, S. 2663-2668
ISSN: 1614-7499
Electronic waste management approaches: An overview
In: Waste management: international journal of integrated waste management, science and technology, Band 33, Heft 5, S. 1237-1250
ISSN: 1879-2456
Identification of microplastic fibres released from COVID-19 test swabs with Raman imaging
In: Environmental sciences Europe: ESEU, Band 35, Heft 1
ISSN: 2190-4715
Abstract
Background
COVID-19 pandemic is not yet over, and it has been generating lots of plastic wastes that become a big concern. To catch the virus, for example, no matter via antigen or PCR test, swab is generally used for sampling. Unfortunately, the swab tip is commonly made of plastics, and thus it can be a potential source of microplastics. This study aims to propose and optimise several Raman imaging to identify the microplastic fibres released from different COVID-19 test swabs.
Results
The results show that Raman imaging can effectively identify and visualise the microplastic fibres released from the swabs. In the meantime, on the surface of the fibres, additives such as titanium oxide particles are also captured for some brands of swabs. To increase the result certainty, scanning electron microscope (SEM) is first employed to get the morphology of the released microplastic fibres, along with Energy-dispersive X-ray spectroscopy (EDS) to confirm the presence of titanium element. Then, Raman imaging is advanced to identify and visualise the microplastics and titanium oxide particles, from different characteristic peaks in the scanning spectrum matrix. To further increase the imaging certainty, these images can be merged and cross-checked using algorithms, or the raw data from the scanning spectrum matrix can be analysed and decoded via chemometrics, such as principal component analysis (PCA). Beyond the advantages, the disadvantages of the confocal Raman imaging (affected by focal height) and algorithms (non-supervised calculation) are also discussed and intentionally corrected. In brief, the imaging analysis (particularly the combined SEM with Raman) is recommended to avoid the possible result bias that might be generated from the single spectrum analysis at a selective but random position.
Conclusions
Overall, the results indicate that Raman imaging can be a useful tool to detect microplastics. The results also send us a strong warning that, if we worry about the potential microplastics contamination, we should be cautious to select the suitable COVID-19 testing kits.
Photodegradation of modified petroleum impregnated bentonite mulch under the effects of solar radiation simulating the outdoor condition
In: Environmental science and pollution research: ESPR, Band 29, Heft 10, S. 14754-14766
ISSN: 1614-7499
Reduction in arsenic toxicity and uptake in rice (Oryza sativa L.) by As-resistant purple nonsulfur bacteria
In: Environmental science and pollution research: ESPR, Band 25, Heft 36, S. 36530-36544
ISSN: 1614-7499
Toxicity of diesel water accommodated fraction toward microalgae, Pseudokirchneriella subcapitata and Chlorella sp. MM3
In: Ecotoxicology and environmental safety: EES ; official journal of the International Society of Ecotoxicology and Environmental safety, Band 142, S. 538-543
ISSN: 1090-2414
Biological—waste as resource, with a focus on food waste
In: Environmental science and pollution research: ESPR, Band 23, Heft 8, S. 7071-7073
ISSN: 1614-7499