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@article{1410398,
author = {Škulcová, Lucia and Hale, Sarah E. and Hofman, Jakub and Bielská, Lucie},
article_location = {OXFORD},
article_number = {November},
doi = {http://dx.doi.org/10.1016/j.chemosphere.2017.07.159},
keywords = {Aging; Soil; DDE; Supercritical fluid extraction; XAD; Solid-phase microextraction},
language = {eng},
issn = {0045-6535},
journal = {Chemosphere},
title = {Laboratory versus field soil aging: Impact on DDE bioavailability and sorption},
url = {https://www.sciencedirect.com/science/article/pii/S0045653517312092?via%3Dihub},
volume = {186},
year = {2017}
}
TY - JOUR
ID - 1410398
AU - Škulcová, Lucia - Hale, Sarah E. - Hofman, Jakub - Bielská, Lucie
PY - 2017
TI - Laboratory versus field soil aging: Impact on DDE bioavailability and sorption
JF - Chemosphere
VL - 186
IS - November
SP - 235-242
EP - 235-242
PB - PERGAMON-ELSEVIER SCIENCE LTD
SN - 00456535
KW - Aging
KW - Soil
KW - DDE
KW - Supercritical fluid extraction
KW - XAD
KW - Solid-phase microextraction
UR - https://www.sciencedirect.com/science/article/pii/S0045653517312092?via%3Dihub
L2 - https://www.sciencedirect.com/science/article/pii/S0045653517312092?via%3Dihub
N2 - Solid-phase microextraction (SPME), XAD, and the sequential supercritical fluid extraction (SFE) were used to assess the influence of aging of p,p'-DDE in a laboratory contaminated soil for up to 730 days. The end points determined were the freely dissolved concentration (C-free) using SPME, the potentially bio-accessible fraction (F-xAD, %) and the distribution of p,p'-DDE among fast, moderate, and slow desorbing soil sites determined by three sequentially stronger SFE conditions. C-free and F-xAD decreased during the first 35 days of aging by up to 40%. After this, no significant changes were observed up to the end of the aging experiment. The relative percentage of fast desorbing sites tended to exponentially decrease with aging, while the percentage of moderate and slow desorbing sites increased over time. These changes were most apparent within the first 90 days of aging, after which the relative distribution of p,p'-DDE among desorbing sites remained relatively constant. Significant correlations between SFE and XAD results demonstrated that the XAD method preferentially desorbed p,p'-DDE from fast and moderate desorbing sites and is capable of extracting the bioaccessible fraction. The distribution among desorbing sites, C-free and F-xAD values determined after different periods of laboratory aging were then compared to those measured for a field-contaminated soil where p,p'-DDE had resided for more than 40 years. C-free. FxAD and SFE profiles measured for the field-aged p,p'-DDE were similar to those observed for p,p'-DDE aged in laboratory for between 35 and 90 days. These results suggest that aging in the laboratory must be carried out for periods of months if it is to approximate field aging.
ER -
ŠKULCOVÁ, Lucia, Sarah E. HALE, Jakub HOFMAN and Lucie BIELSKÁ. Laboratory versus field soil aging: Impact on DDE bioavailability and sorption. \textit{Chemosphere}. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD, 2017, vol.~186, November, p.~235-242. ISSN~0045-6535. Available from: https://dx.doi.org/10.1016/j.chemosphere.2017.07.159.
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