“…Most of the reports on environmental matrices involve various aquatic samples. New procedures for the determination of alkali and alkaline earth metal ions from single rain, cloud, or fog drops and ice crystals [130,131], aerosols and depositions [132], drinking water [133], mineral and tap water [127,128,134], river water [66], groundwater [135], underground water [136], and seawater [137], Ca, Mg, Zn, and Al from tap and surface water [110], for iron(II) quantification in rain and tap water [117] and natural waters [81], and for measuring the content of Pb(II) in seawater [124] were reported. Usually these samples do not require any pretreatment other than filtration and occasionally dilution.…”