dc.date.accessioned |
2019-01-22T20:48:21Z |
|
dc.date.available |
2019-01-22T20:48:21Z |
|
dc.date.issued |
2018 |
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dc.identifier.issn |
1755-1307 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/148865 |
|
dc.description.abstract |
© Published under licence by IOP Publishing Ltd. The biological decomposition of benzo[a]pyrene in the concentrations exceeding the MAC (maximum permissible concentration) level in soils by 2, 5 and 10 times was studied in laboratory conditions. The gray forest soil samples were contaminated with benzo[a]pyrene and incubated in optimum for bacterial growth soil moisture for 30 and 60 days. The residual amount of contaminant was monitored by HPLC after extraction with acetone-cyclohexane (2:1). Soil microbial activity was evaluated by measuring basal respiration (BR) and substrate-induced respiration (SID) rates of the soil by gas chromatography. The results of the experiment showed that in 60 days the amount of benzo[a]pyrene in contaminated soils decreased; however, this time was not enough for complete decomposition of pollutant. In this case, benzo[a]pyrene has a negative effect on the BR and SIR rates. Soil contamination affected the BR rate only at high doses (10 MPC), whereas the SIR was a more sensitive indicator of the toxic effect of the pollutant and significantly reacts already at concentrations at the level of 2 MPC. The combination of PAHs isolated from biochar has a strong negative effect on the values of BR and SIR. |
|
dc.relation.ispartofseries |
IOP Conference Series: Earth and Environmental Science |
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dc.title |
Investigation of biological destruction of benzo[a]pyrene andpolycyclic aromatic hydrocarbons of biochar in soil |
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dc.type |
Conference Paper |
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dc.relation.ispartofseries-issue |
1 |
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dc.relation.ispartofseries-volume |
107 |
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dc.collection |
Публикации сотрудников КФУ |
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dc.source.id |
SCOPUS17551307-2018-107-1-SID85042217282 |
|