Papers by Cristiana Guerranti
Escobilla海浜(メキシコ,Oaxaca)からのLepidochelys olivaceaウミガメの異なる組織中におけるペルフルオロ酸類(PFCAs)のレベル
Science of The Total Environment, 2016
Cyclic and Linear Siloxanes in Indoor Environments: Occurrence and Human Exposure
The handbook of environmental chemistry, 2019
Methylsiloxanes (MSs) are an important class of additive chemicals that due to their physicochemi... more Methylsiloxanes (MSs) are an important class of additive chemicals that due to their physicochemical properties have been broadly used in several industrial applications and consumer products. The purpose of this chapter is to provide a literature review on the current state of knowledge on the occurrence and distribution of MSs in air samples from different indoor environments, including, for example, residential houses, offices, public buildings, cars, industries or hair salons. Literature studies on the levels of cyclic and linear siloxanes in indoor dust, which is a major source of MS due their particle-binding affinity, are discussed. A wide range of MS concentrations in air and dust samples has been reported together with an evident different level in indoor air samples from building of different classification. Among cyclic methylsiloxanes, D5 was usually the dominant congener in the investigated samples. In general, the levels from industrial facilities were one or more orders of magnitude higher than those in residential buildings. The mean inhalation exposure doses to total siloxanes for infants, toddlers, children, teenagers and adults are also presented. Recent investigations on human exposure to MSs through dust ingestion were also included.
Journal of laboratory chemical education, 2015
This paper summarizes an experimental and exciting approach to the teaching of scientific school ... more This paper summarizes an experimental and exciting approach to the teaching of scientific school subjects in secondary schools. A multidisciplinary, integrate and interactive approach to the chemistry and scientific school subjects was approached starting from a simulated hypothetical alimentary fraud implicating DOC Italian wines as concrete case study. Students improve their knowledge on spectrophotometry throughout an interdisciplinary and multi-level approach to the study of the science involving different scientific school subjects (mathematic, physic, chemistry, and biology), informatics, and English language. This approach resulted exciting and innovative and students' knowledge significantly improved as evidenced by results documented by the ante-activity and post-activity questionnaire.
Presenza di perfluorottano sulfonato ed acido perfluorottanico in specie ittiche provenienti da due golfi della Sicilia
IntechOpen eBooks, Sep 28, 2022
The series of experiments presented in the paper served to clarify the effects of contemporary ex... more The series of experiments presented in the paper served to clarify the effects of contemporary exposure to surfactant, microplastics (polyethylene and polyvinyl chloride), and nanoparticles (TiO 2 and ZnO) on the model organism Daphnia magna. Exposure was evaluated with respect to the age of the organisms ("young", 24 hours old, and "aged" 10 days old specimens), trophic status (feeding or fasting), and the simultaneous presence of a surfactant. All the above-mentioned substances are present in the wastewater coming from various environmental sources from cosmetic products. The experiments were conducted in compliance with the OECD 202:2004 guideline, which is also a reference for ecotoxicity tests required by REACH. The results showed that surfactants enhance effects of toxicity produced by the exposure to the microplastic + nanoparticle mixtures. The influence due to factors such as nutrition (effect in fasting >> feeding conditions) and the age of individuals (effects in older >> younger animals) is essential. Concerning young individuals, exposure to PE-TiO 2 is the most significant in terms of effects produced: it is very significant, especially in the presence of surfactant (both under fasting and feeding conditions). On the contrary, exposure to the PE-Zn mixture shows the minor effects. The comparison with the literature, especially as regards the possibility of interpreting the toxicity trends for the various mixtures with respect to the individual elements that compose them, leads to hypothesize additive effects still to be investigated and confirms the greatest toxicity contribution of TiO 2 .
Pesticides and Polychlorinated Biphenyl Residues in Human Adipose Tissue
Bulletin of Environmental Contamination and Toxicology, 2002
Organochlorine compounds are highly toxic man-made molecules that persist in most environmental c... more Organochlorine compounds are highly toxic man-made molecules that persist in most environmental compartments including the atmosphere, soil, water, sediments and biota (Duarte-Davidson et al., 1994; Loganathan and Kannan, 1994; Corsolini et al., 1995). Compounds like dichlorodiphenyltrichloroethane (DDT), including its persistent metabolite dichlorodiphenyldichloroethylene (DDE), hexachlorobenzene (HCB) and polychlorinated biphenyls (PCBs) can be amplified up the food web and ultimately passed on to humans at high concentrations (Geyer et al. 1986; Focardi et al. 1986; Clement and Colborn, 1992; Giittes et al. 1998). Because of their lipophilic nature, organochlorines tend to accumulate in fatty tissues which entails considerable toxicological implications for human health. Human adipose tissue analysis allows to determine whether humans are exposed to such toxic molecules.Although the use and production of organochlorine compounds has been banned in many countries, they continue to be found in the environment, especially in biological matrixes. The aim of this study was to determine HCB, DDT and PCB levels in human adipose tissue. Two areas that differ by their geographical and socio-economic conditions were chosen for our study: Siena (Italy) and Concepción (Chile). In both countries, laws regulating the use of organochlorine compounds were applied in the eighties. Additional data regarding age and sex was collected for correlation between these variables and organochlorine levels.
Current Opinion in Environmental Science & Health, Apr 1, 2019
The information available for the levels of plasticizers in urban air for the European region was... more The information available for the levels of plasticizers in urban air for the European region was reviewed. Wide variability in phthalates and BPA concentrations between differently urbanised areas emerged, due to the influence of vehicular traffic, waste management practices and presence of buildings, from which plasticizers are emitted. The ambient air levels measured have not shown a significant influence on human exposure, confirming that other pathways play a fundamental role. Anyway, given their toxicity, it would be important to intensify measurements campaigns, at least for DEHP and BPA, to monitor and improve air quality, and, finally, limit the health risks deriving from the exposure to a mixture of air toxic molecules.
Plastic litter in sediments from the Croatian marine protected area of the natural park of Telaščica bay (Adriatic Sea)
Marine Pollution Bulletin, 2017
This paper reports baseline levels of litter (macro, meso and microplastics) in sediments collect... more This paper reports baseline levels of litter (macro, meso and microplastics) in sediments collected from different areas of the Croatian MPA of the Natural Park of Telaščica bay (Adriatic Sea, GSA n. 17). The distribution of total abundance according to size, for all analysed locations evidences that microplastics are the dominant fraction concerning item&#39;s numbers. In all analysed samples no macroplastics were found, while microplastics are 88.71% and mesoplastics are 11.29% of the total.
Esposizione a contaminanti ambientali persistenti: risultati di alcuni studi effettuati su matrici umane
Dioxins and dioxin-like compounds in food products
LEGACY AND EMERGENT POPs IN THE GREENLAND SHARK Somniosus microcephalus AND IN ITS PREYS FROM NE GREENLAND FJORDS
Introduction The Greenland shark Somniosus microcephalus (Bloch and Schneider, 1801) is an intere... more Introduction The Greenland shark Somniosus microcephalus (Bloch and Schneider, 1801) is an interesting species from an ecotoxicologiacl point of view, being a long-lived and slow-growing 1 deep-sea shark at risk due to its longevity and food habits that may allow it to bioaccumulate toxic and persistent organic pollutants (POPs) 1-3 . The Greenland sharks are the largest fish in the Arctic sea-waters and due to their large size and biological features, their biology and life history are poorly known 3-4 . Ecotoxicological data are also very scarce. The Greenland shark stomach content analysis indicate they feed on a wide variety of taxa including invertebrates, fish, and marine mammals 1, 4-7 . It was already reported as an excellent sentinel species for ecotoxicologial studies in the Arctic 2, 5 and a key species of the Arctic food web 7 . The aims of this study were to determine the concentrations of polychlorobyphenils (PCBs), polybromodiphenylethers (PBDEs), perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), polychlorinated dibenzo-dioxins (PCDDs) and -furans (PCDFs), o,p'and p,p' isomers of DDT, DDD and DDE, alpha-, beta-, gamma-, deltaisomers of HCHs, dieldrin, endrin, and HCB in the Greenland sharks and other fish and invertebrates from the pristine North-East Greenland fjords (Greenland Sea). Another aim of this study was to assess whether there is an increase of concentrations from lower to higher trophic levels.
Water, Sep 13, 2022
Ports are affected by a high rate of sedimentation that requires frequent dredging of the seabed ... more Ports are affected by a high rate of sedimentation that requires frequent dredging of the seabed to restore bathymetric levels. In some cases, the sediments consist of a large amount of leaves of phanerogams (e.g., P. oceanica) that must be treated differently from what is required by the Italian law on sediments (Ministerial Decree No. 173/2016), since soils cannot be treated either as sediment or as waste. About one meter of the sediment cores collected in the Port of Sperlonga consisted of organic waste derived from a different stage of seagrass decomposition. To optimize the management, the decomposed organic detritus was characterized from physical-chemical (content of nutrient and pollutants), ecotoxicological and mechanical (microtensile, microscopic structure) points of view, to define different management solutions for the final disposal. The results of this study describe the characteristics of this type of organic detritus, highly present in Mediterranean coastal ecosystems, and allow a better definition of different possible solutions to valorize this resource instead of disposing it in an organic waste landfill. The search for environmentally friendly options for waste management is of particular interest in terms of the green economy, and the reduction of CO 2 emissions as an indirect effect obtained by improving waste recycling.
PFAS levels in fish species in the Po River (Italy): New generation PFAS, fish ecological traits and parasitism in the foreground
Science of The Total Environment
Cosmetics Trace Elemental Content: Analytical Methodology and Toxicity Evaluation of Products in the Italian Market
Analytical Letters
A multidisciplinary approach to assess the effects of perfluorooctanoic acid using carp as an experimental model
Preliminary Screening of Perfluorooctane Sulphonate (Pfos) and Perfluooctanoic Acid (Pfoa) in a Fish Species (Serranus Cabrilla) from the Coast of Sicily (Southern Tyrrhenian Sea) Screening Preliminare DI Perfluorottano Sulfonato (Pfos) Ed Acido Perfluorottanico (Pfoa) in Una Specie Ittica Della ...
Dioxin and dioxin-like compounds in commercial seafood species in Italy: dietary risks in humans
IV Mediterranean Basin Conference on Analytical Chemistry, 2002
Portoroz, Sloveni
Effect of waterborne exposure to perfluorooctanoic acid on nephron and renal hemopoietic tissue of common carp Cyprinus carpio
Ecotoxicology and Environmental Safety, 2022
Per- and poly-fluoroalkyl substances (PFAS) are synthetic contaminants of global concern for envi... more Per- and poly-fluoroalkyl substances (PFAS) are synthetic contaminants of global concern for environmental and public health. Perfluorooctanoic acid (PFOA) is an important PFAS, and considerable attention has been paid to its hepatotoxicity and reproductive and developmental impact, while potential nephrotoxic effects are largely ignored, especially in fish. This study documents the structural and ultrastructural effects on kidney of common carp Cyprinus carpio exposed to waterborne PFOA at an environmentally relevant concentration of 200 ng L-1 and at 2 mg L-1. Dilation of the glomeruli capillary bed, increased vesiculation in the proximal tubular segment, compromised mitochondria, apical blebbing, and sloughing of collecting duct cells occurred in exposed fish, primarily at 2 mg L-1. Perfluorooctanoic acid exposure resulted in higher numbers of rodlet cells (RC), putative immune cells exclusive to fish, mainly in the renal interstitium, than seen in controls, increased association with cells of myeloid lineage and modifications to ultrastructure. No differences in other cells of innate immunity were observed. Despite the absence of severe histological lesions, PFOA was shown to affect both nephron and hemopoietic interstitium at high concentration, raising concern of the impact on renal and immune function in fish. The response of RCs to PFOA concentration of 200 ng L-1 suggests a potential role as a biomarker of PFOA exposure.
Taking the sparkle off the sparkling time
Marine Pollution Bulletin, 2021
The awareness of impact of microplastics has led stakeholders to define strategies for the reduct... more The awareness of impact of microplastics has led stakeholders to define strategies for the reduction of plastic emission and for their removal from aquatic environments. Glitter includes a wide range of shapes, chemical types of plastics covered by a metallic layer and color addition that confer them the typical 'sparkling' aspect. Here we focus on critical aspects that make glitter a product with a potential of significant environmental impact suggesting the need to take effective measures to limit emissions. Glitter is used here as a paradigm for all emergent plastic pollutants which calls for a deeper rethinking of our concept of sustainability. We are only at the beginning of the studies on glitter in the aquatic environment but on the basis of their potential impacts now is the time to take decisions taking the sparkle off the sparkling time.
POPs in human breast cancer adipose tissue from Central Chile
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Papers by Cristiana Guerranti