Using Lead Isotopic Ratios to Trace the Sources of Arsenic and Lead of Paddy Soils at Guandu, Beitou
Date Issued
2008
Date
2008
Author(s)
Chen, Sheng-Kuen
Abstract
In Guandu Plain, 128 hectares of paddy soils with the high arsenic content, exceeding soil pollution control standards (over 60 mg kg-1), were determined due to the irrigation with the water mixed hot spring with arsenic in the early periods. The isotopic compositions of lead exhibits wide variations in natural and anthropogenic materials that often can be used as a diagnostic“signature.”Lead isotopic compositions, analyzed on multi-collector inductively coupled plasma mass spectroscopy was used to distinguish pollution sources. The results of cluster analysis clearly indicate that the paddy soils of Guandu Plain have been primarily influenced by the parent rock of Tatun Volcano Group because those were located within the basin of Huang Gang Creek and the soil of the polluted extremely polluted lead was from the long-term irrigated with the water mixed hot spring in the Thermal Valley. Furthermore, the anthropogenic pollution was also verified in the paddy soils with the exceptional lead content. The results suggest that lead isotope ratios can be used effectively to constrain the sources of lead in Guandu Plain, especially for natural versus anthropogenic influence can be identified.
Subjects
Guandu Plain
lead isotope
MC-ICP-MS
soil contamination
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-97-R95622010-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):855e429aac4dd8ece1dd8a02b208f7a1