270 research outputs found
Multivariate analysis of mineral constituents of edible Parasol Mushroom (Macrolepiota procera) and soils beneath fruiting bodies collected from Northern Poland
Caps and stipes of 141 fruiting bodies of Parasol Mushroom (Macrolepiota procera) and surface layer of soils collected from 11 spatially distant and background (pristine) areas in Northern Poland were analyzed for Ag, Al, Ba, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Na, Ni, P, Pb, Rb, Sr, and Zn by inductively coupled plasma optical emission spectroscopy and cold vapor atomic absorption spectroscopy. In terms of bioconcentration and bioexclusion concept, K, Ag, Cu, Rb, and P were highly bioconcentrated in caps, and their bioconcentration factor values varied for the 11 sites between 120 and 500â67â420, 70â220, 10â170, and 45â100, respectively. Cd, Zn, Mg, and Na showed bioconcentration factors (BCFs) between 3.3 and 36, 3.7â15, 0.92â6.3, and 1.4â44 while Al, Ba, Ca, Co, Cr, Mn, Ni, Pb, and Sr were excluded (BCFâ<â1). The Parasol Mushroom is a species harvested in the wild, and its caps are of unique taste and can contain a spectrum of essential and hazardous mineral compounds accumulated at elevated concentrations, even if collected at the background (pristine) areas. These elevated mineral concentrations of the caps are due to the efficient bioconcentration potential of the species (K, Ag, Cu, Rb, P, Cd, Zn, Mg, and Na) and abundance in the soil substrates (Al, Ca, Fe, Mn). The estimated intake rates of Cd, Hg, and Pb contained in Parasol Mushroomâs caps show a cause for concern associated with these metals resulting from the consumption of between 300- and 500-g caps daily, on a frequent basis in the mushrooming season
Evaluation of the radioactive contamination in fungi genus Boletus in the region of Europe and Yunnan Province in China
Soil-to-mushroom transfer and diversity in total mercury content in two edible Laccaria mushrooms
Mercury in the Surface Soil and Cassava, Manihot esculenta (Flesh, Leaves and Peel) Near Goldmines at Bogoso and Prestea, Ghana
Wild Boar Tissue Levels of Cadmium, Lead and Mercury in Seven Regions of Continental Croatia
Concentrations of cadmium, mercury and lead were analysed by atomic absorption spectrometry in the kidney and muscle of free-living wild boar (n = 169) from hunting grounds in seven counties of continental Croatia. Mean levels of metals (mg/kg) in muscle and kidney of boars ranged as follows: Cd: 0.005â0.016 and 0.866â4.58, Pb: 0.033â0.15 and 0.036â0.441, Hg: 0.004â0.012 and 0.04â0.152. In all seven regions, concentrations exceeded the permitted values (muscle and kidney mg/kg: cadmium 0.05/1; lead 0.1/0.5; mercury 0.03/0.1) in 13.6% and 71.6% of samples (muscle and kidney, respectively) for cadmium; 13.6% and 8.9% for lead; 19.5% and 2.4% for mercury. There were significant differences among the regions. Vukovar-Srijem and Virovitica-Podravina Counties were highly contaminated with cadmium, Sisak-Moslavina and Virovitica-Podravina Counties with lead and Brod-Posavina County had highest mercury concentrations. These results suggest a detailed investigation of physiological and environmental factors contributing to accumulation of metals in boars
Mercury and Chlorinated Pesticides on the Highest Level of the Food Web as Exemplified by Herring from the Southern Baltic and African Penguins from the Zoo
GAPS-megacities: A new global platform for investigating persistent organic pollutants and chemicals of emerging concern in urban air
A pilot study was initiated in 2018 under the Global Atmospheric Passive Sampling (GAPS) Network named GAPS-Megacities. This study included 20 megacities/major cities across the globe with the goal of better understanding and comparing ambient air levels of persistent organic pollutants and other chemicals of emerging concern, to which humans residing in large cities are exposed. The first results from the initial period of sampling are reported for 19 cities for several classes of flame retardants (FRs) including organophosphate esters (OPEs), polybrominated diphenyl ethers (PBDEs), and halogenated flame retardants (HFRs) including new flame retardants (NFRs), tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCDD). The two cities, New York (USA) and London (UK) stood out with âŒ3.5 to 30 times higher total FR concentrations as compared to other major cities, with total concentrations of OPEs of 15,100 and 14,100 pg/m, respectively. Atmospheric concentrations of OPEs significantly dominated the FR profile at all sites, with total concentrations in air that were 2â5 orders of magnitude higher compared to other targeted chemical classes. A moderately strong and significant correlation (r = 0.625, p < 0.001) was observed for Gross Domestic Product index of the cities with total OPEs levels. Although large differences in FR levels were observed between some cities, when averaged across the five United Nations regions, the FR classes were more evenly distributed and varied by less than a factor of five. Results for Toronto, which is a âreference cityâ for this study, agreed well with a more in-depth investigation of the level of FRs over different seasons and across eight sites representing different urban source sectors (e.g. traffic, industrial, residential and background). Future sampling periods under this project will investigate trace metals and other contaminant classes, linkages to toxicology, non-targeted analysis, and eventually temporal trends. The study provides a unique urban platform for evaluating global exposome.A global study across 20 megacities/major cities reporting urban air concentrations of flame retardants and plasticizers.Authors thank the United Nations Environment Programme
(UNEP) and the Chemicals Management Plan (CMP) for financial
support. The worldwide implementation of the Global Monitoring
Plan is made possible thanks to the generous contributions to the
Stockholm Convention Voluntary Trust Fund from the Governments
of Japan, Norway, Sweden, and through the European
Commissionâs Thematic Programme for Environment andSustainable Management of Natural Resources, including Energy
(ENRTP). Further, the contribution of the projects to support POPs
monitoring activities in regions, funded through the Global Environment
Facility (GEF) and the Strategic Approach to International
Chemicals Management (SAICM), is greatly acknowledged. Monitoring
activities and data collection and analysis are implemented
in the five UN regions in cooperation with strategic partners and
through the involvement of Regional Organization Groups and
Global Coordination Group.
We also thank Yasuyuki Shibata and Yoshikatsu Takazawa
(Tokyo, Japan); Juan Mu~noz-Arnanz (Madrid, Spain) and Dilek
âŹOzkan and Sinan Kızıltug (_Istanbul, Turkey) for their help and
assistance in the sampling campaign
Comparative Study of Metals Accumulation in Cultured In Vitro Mycelium and Naturally Grown Fruiting Bodies of Boletus badius and Cantharellus cibarius
Organotin compounds in surface sediments from seaports on the Gulf of GdaĆsk (southern Baltic coast)
- âŠ