abiotic processes 105–106 absorption spectra 81–84, 203 acidification lakes 23 seawater 133 advanced oxidation processes (AOPs) 119, 181, 277 agriculture 34–35 algae 11 algicides 277 alkalinity 11–12, 20–23 allochthonous sources 46 amictic lakes 24 amino acids 159–160 4-amino-2-hydroxy-6-isopropyla...