Publications by authors named "A Ronda"
Article Synopsis
- - This study is the first to analyze the presence of anthropogenic microparticles in franciscana dolphins, the most endangered cetaceans in the Southwest Atlantic Ocean, using samples from ten female dolphins collected between 2013 and 2023.
- - Analysis of the intestinal content and wall tissues revealed that all samples contained anthropogenic particles, primarily in the form of fibers, with various types of polymers like polyester and polypropylene identified through advanced spectroscopic techniques.
- - The research indicated differences in the types and colors of microplastics found in various sections of the dolphin's intestines, highlighting the extent of microplastic absorption in these endangered animals.
Article Synopsis
- - This text discusses challenges in analyzing microplastics and microfibers using Raman microscopy, especially for researchers lacking specialized training in this area.
- - Key issues highlighted include effective particle isolation, appropriate substrate selection, and managing background signals and sample interferences that can affect results.
- - The authors also present spectral features of common polymer contaminants and promote the use of open-source libraries for improved chemical identification in Raman spectroscopy.
Paints, coatings and varnishes play a crucial role in various industries and daily applications, providing essential material protection and enhancing aesthetic characteristics. However, they sometimes present environmental challenges such as corrosion, wear, and biofouling which lead to economic losses and ecological harm. Paint particles (PPs), including antifouling/anticorrosive paint particles (APPs), originate from marine, industrial, and architectural activities, primarily due to paint leakage, wear, and removal, thus significantly contributing to marine pollution.
View Article and Find Full Text PDFThis study assessed the effects of pollutants on Magallana gigas along a coastal zone with different levels of human activity: a highly impacted zone in the Bahía Blanca Estuary and a less impacted zone on the adjacent sandy beaches. Oysters collected in 2021 were analyzed for various factors, including metals, polycyclic aromatic hydrocarbons (PAHs), organochlorine pesticides, microplastics, oxidative stress and histology. Oysters of both environments exhibited detectable concentrations of all these pollutants in their tissues.
View Article and Find Full Text PDFRelations among polycyclic aromatic hydrocarbons (PAHs), biomarkers of oxidative stress (lipid peroxidation, glutathione, and glutathione S-transferase activity), and the possible influence of environmental factors (temperature, pH, and salinity) were assessed in situ for specimens of Ramnogaster arcuata, a native estuarine fish. PAH levels found in the muscular tissue of R. arcuata ranged from 0.
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