『Abstract
Five soil samples collected from shooting ranges in 1998 were
stored under a closed condition for 5 years. In addition to SEM
and XRD investigations, the total organic carbon content (TOC),
inorganic carbon content (TIC), δ13C and δ18O
of carbonates and δ13C of plant remains were analyzed.
The concentrations of total carbon contents, the sum of TOC and
TIC, remained the same within the 5 years storage, whereas the
TOC and TIC contents decreased and increased, respectively. The
TIC increase is associated with a decreased TOC, suggesting a
conversion of organic carbon into inorganic carbon. Such a conversion
is evidenced by the presence of primary lead carbonates and carbon
isotopic composition of lead carbonates. It can be concluded that
soil organic matters lay an important role in the process of bullets
weathering and controls migration of the elevated lead in the
soil.
Keywords: Shooting range soil; Organic carbon; Inorganic carbon;
Transformation』
Introduction
Samples and experiments
Results and discussion
Mineralogical feature of soil lead and weathering products
of lead bullets
Carbon speciation
Carbon and oxygen isotopes
Weathering processes and mitigation of metal lead in range soils
Summary
Acknowledgments
References