reduce
damage
Therefore
meaningful
monitoring
tools
required
This paper presents how Fourier Transform Infrared (FT-IR) Spectroscopy can be used to monitor
leachate from
various landfill sites
The composition of percolated leachate provides information
about reactivity or stability of organic matter in landfills. Chemical compounds of investigated leachate
are depicted by distinct spectral pattern. Partial least squares regression (PLS-R) models, a multivariate
analysis tool, were developed based on infrared spectra to determine simultaneously conventional
parameters such as ammonium, nitrate, sulfate, and dissolved organic carbon. The developed models
are appropriate for application in waste management practice with respect to their excellent coefficients
of determination, namely R2 = 0.99, 0.99, 0.98, and 0.98, their low errors of cross-validation and their high
ratios of performance to deviation (RPD = 9.3, 12.5, 6.5, 7.3). Thus, FT-IR spectroscopy turned out to be a
reliable, time-saving tool to determine four parameters relevant for landfill aftercare monitoring by one
single easy adaptable
measurement.