Original scientific paper

https://doi.org/10.5562/cca2640

Solubility of Benzo[a]pyrene and Organic Matter of Soil in Subcritical Water

Svetlana Sushkova orcid.org/0000-0003-3470-9627 ; Southern Federal University, Rostov-on-Don, Russia
Tatiana Minkina ; Southern Federal University, Rostov-on-Don, Russia
Saglara Mandzhieva ; Southern Federal University, Rostov-on-Don, Russia
Irina Tjurina orcid.org/0000-0001-6884-8276 ; Southern Federal University, Rostov-on-Don, Russia
Olga Bolotova ; Southern Federal University, Rostov-on-Don, Russia
Galina Vasilyeva ; Institute of Physicochemical and Biological Problems in Soil Science Russian Academy of Sciences, Pushchino, Moscow Region, Russia
Palma Orlović-Leko ; Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Zagreb, Croatia
Tatiana Varduni ; Southern Federal University, Rostov-on-Don, Russia
Rıdvan Kızılkaya ; Ondokuz Mayıs University, Samsun, Turkey
Izzet Akca ; Ondokuz Mayıs University, Samsun, Turkey

Abstract

A dynamic subcritical water extraction method of benzo[a]pyrene from soils is under consideration. The optimum conditions for benzo[a]pyrene extraction from soil are described including the soil treatment by subcritical water at 250 °C and 100 atm for 30 min. The effectiveness of developed method was determined using the matrix spiking recovery technique. A comparative analysis was made to evaluate the results of benzo[a]pyrene extraction from soils using the subcritical water and organic solvents. The advantages of the subcritical water extraction involve the use of ecologically friendly solvent, a shorter time for the analysis and a higher amount of benzo[a]pyrene extracted from soil (96 %). The influence of subcritical water extraction on soil properties was measured the investigation of the processes occurring within soil under the influence the high temperature and pressure. Under appropriate conditions of the experiment there is the destruction of the soil organic matter while the composition of the soil mineral fraction remains practically unchanged.

Keywords

benzo[<i>a</i>]pyrene; subcritical water; extraction; soil

Hrčak ID:

150529

URI

https://hrcak.srce.hr/150529

Publication date:

30.12.2015.

Visits: 2.810 *