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LEVEL OF NITRITES AND NITRATES IN MUSHROOMS FROM POLLUTED SOIL

L. Agoroaei, C. Mircea, C. Butnaru, C. Tanase, V. Chinan, C. Barsan, E. Butnaru

First published: 2008DOI pendingView metrics

Abstract

Recent data demonstrate a significant capacity of mushrooms to retain the pollutants from soil, so being realised the mycoremediation of soil. Nitrogen oxides are major atmospheric pollutants. The main oxides, nitrogen monoxide and dioxide, penetrated in human body cause important toxic effects: methaemoglobinemia, haemolysis, vasodilatation and even cancerogenesis. The accumulation of these oxides in mushrooms, as nitrites and nitrates, is dependent on: species, environmental conditions and chemical composition of soil, development stage. The paper present the results of a study concerning the level of nitrites and nitrates in mushrooms from CДѓlimani Situs (Suceava County, Moldova Region), an area with an intense polluted soil by mining activities. The mycological material harvested in July, August and October 2007, has included 19 samples of 8 species: Suillus luteus, Laccaria laccata, Inocybe lacera, Suillus grevillei, Suillus variegatus, Leccinum piceinum, Fomitopsis pinicola, Hebeloma subsaponaceum. The samples have been harvested from 6 zones of CДѓlimani Situs: Ilva Dump, Dumitrelul Dump, Pine Dump, around the Pine Dump, Reservation with Pinus cembra, CДѓlimani Mountains. The advanced pollution of soil in this area not allowed the development of the mushrooms and, so, the harvesting of a higher number of samples. The nitrites and nitrates level has been determined, after water extraction from mushrooms, by spectrophotometrical methods. The results have been expressed in mg/kg dried product at 105oC. The concentrations of nitrites ranged between 32.25 (Suillus luteus, Pine Dump) and 1340.40 (Laccaria laccata, Reservation with Pinus cembra), while the levels of nitrates varied between 71.10 (Suillus grevillei, Pine Dump) and 945.30 (Suillus luteus, Ilva Dump). For the species with multiple samples, different values have been registered even for the same harvesting zone. Also, no proportionality between nitrites and nitrates values has been observed for the majority of samples. So, to the sample with maxim value of nitrites has been registered 274.65 mg nitrates/kg dried product, while to the sample with maxim value of nitrates has been registered 290.25 mg nitrites/kg dried product. The study is part of a project supported by CNCSIS Romania.

Publication details

Title
LEVEL OF NITRITES AND NITRATES IN MUSHROOMS FROM POLLUTED SOIL
Authors
L. Agoroaei, C. Mircea, C. Butnaru, C. Tanase, V. Chinan, C. Barsan, E. Butnaru
Proceedings
8th International Scientific Conference - SGEM2008
Publisher
SGEM Scientific GeoConference
Year
2008
Pages
Not available yet
SWS Citekey
Agoroaei20088142
ISSN
Not available yet
ISBN
954-91818-1-2
Language
en
Publication type
Conference Paper
Keywords
Ecology and Environmental Protectionmushroomsnitratesnitritessoil mycoremediation
References11

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  8. Mircea C, Butnaru C, Tañase C, Agoroaei L., Butoaru E., Proca M. 2004. Concentratia nitritilor in ciuperci comestibile recoltate de pe Valea Bistritei, Rev. Med. Chir. Soc. Med. Nat Iasi, 108, 3, 708-71 1, 2004;

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