IFEG   20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
artículos
Título:
SR μXRF and XRD study of the spatial distribution and mineralogical composition of Pb and Sb species in weathering crust of corroded bullets of hunting fields
Autor/es:
MERA FERNANDA; M RUBIO; PEREZ CARLOS; GALVAN VICTOR; A.GERMANIER
Revista:
MICROCHEMICAL JOURNAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2014 vol. 119 p. 114 - 122
ISSN:
0026-265X
Resumen:
The spatial distribution of Pb and Sb in core and crust material and the mineralogical composition of these
elements in weathering crust of corroded bullets found in hunting fields were investigated. Lead, antimony
and others metals from pellets alloy are disperse in the soil of the shooting fields. As long as the corroding bullets
are present in soil, secondary Pb and Sb phases appear in the weathering crusts being an important source of
bioavailable Pb and Sb.
Powder X-ray diffraction (XRD) patterns of crust material from weathered bullets showed encrustation of relevant
Pb and Sb phases like: hydrocerussite (Pb3(CO3)2(OH)2), litharge (PbO-tetragonal), hydroxypyromorphite
(Pb5(PO4)3(OH)), gebhardite (Pb8OCl6(As2O5)2, Sb metallic, stibnite (Sb2S3), tripuhyite (FeSbO4) and potassium
sodium antimony oxide (KO13Sb5) among others minor compounds.
The chemical elemental distribution of corroded bullets was determined by synchrotron radiation-induced micro
X-ray fluorescence analysis (SR-μXRF). A positive correlation between Sb and Fe was detected in crust material
measured in the outer rim of the weathered bullets due to Sb adsorption to Fe oxyhydroxides of soil. It was
also observed a spatial correlation between Sb and Cu and between Sb and Zn in crust. The influence of phosphorus
applied as (P)-based fertilizers of soils was observed in the hydroxypyromorphite phase detected in samples
collected near agricultural lands.
© 2014 Elsevier B.V. All rights reserved.