Journal of Agricultural Sciences, Belgrade 2010 Volume 55, Issue 2, Pages: 157-163
https://doi.org/10.2298/JAS1002157M
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Background limit of Zn and Hg in soils of Eastern Serbia
Mrvić Vesna V. (Institut za zemljište, Beograd)
Kostić-Kravljanac Ljiljana M. (Institut za zemljište, Beograd)
Zdravković Mirjana S. (Institut za zemljište, Beograd)
Brebanović Branka Ž. (Institut za zemljište, Beograd)
Čakmak Dragan B. (Institut za zemljište, Beograd)
Sikirić Biljana B. (Institut za zemljište, Beograd)
Saljnikov Elmira R. (Institut za zemljište, Beograd)
The objective of the present study was to point out different approaches for
background limits assessment of Zn and Hg. Background limits obtained by
graphical methods (cumulative probability plot-CDF and boxplot) were similar
for Zn (about 100 mg/kg-1), while background limits for Hg were different
(from 0.2 mg kg-1 to 0.3 mg kg-1). For three empirical methods, besides
natural data, log-transformed ones were used. Results from log-transformed
limits were higher than from natural (except classical methods for Hg). The
most of the territory of Eastern Serbia has low content of these elements,
whose background limits calculated using log-transformed data by
[Median+2MAD] methods (73 mg kg-1 for Zn and 0.15 mg kg-1 for Hg) are the
most suitable (MAD-median of the absolute deviations from the data′s median).
On the part of area with elevated elements content, background limits were
determined using log-transformed data by methods with the highest values: for
Zn it was [Mean+2Sdev], and for Hg boxplot (166 mg kg-1 and 0.41 mg kg-1 for
Zn and Hg respectively).
Keywords: background limits, Zn, Hg, soil
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