In this article, we propose that reflectance spectroscopy or remote sensing technology is a
rapid and inexpensive tool to monitor heavy-metal contamination in soils. We analyzed three
data sets by both chemical and reflectance spectroscopy methods. Despite the data sets
being obtained from different locations and at different times, all three data sets gave similar
results; that is, those that were well correlated with Fe also had higher predictive accuracy:
Ni, Cr, and Co in Baguazhou Island; Ni, Cr, and Cu in Jiangning County; Ni, Cu, and As in …