A simulation experiment as a method for the investigation of the mobility of heavy metals from inundated land

Abstract

A simulation experiment was used to study the interaction of river water with different soils (amble land, orchards, meadows, pastures and forestland). The results obtained by sequential extraction before and after the simulation experiment were compared in order to determine the substrates of the heavy metals in inundated land and to evaluate their mobility. Samples of various soils were collected from the region of the future accumulation Lake Bogovina (Serbia) and analysed for ten elements using AAS, GFAAS and ICP. Investigation of the nature of the association of heavy metals and the identification of their substrates were provided by a five-step sequential extraction. Correlation analysis was used as a method for the determination of the substrates for heavy metals. The good correlation among the microelements and certain macroelements indicated the substrates of the microelements. Manganese and iron had a good correlation with most of the microelements. Calcium had only a few correlations with some microelements. Some elements, such as nickel and cadmium, had one substrate before and another after the simulation experiment.

Simulacioni ogled je upotrebljen za proučavanje interakcije rečne vode sa različitim zemljištem (oranice, voćnjaci, livade, pašnjaci i šumsko zemljište). Rezultati dobijeni sekvencijalnom ekstrakcijom pre i posle simulacionog eksperimenta upoređivani su kako bi se odredili supstrati teških metala u potopljenom zemljištu i procenila njihova mobilnost. Uzorci različitih ekohemijskih tipova zemljišta, koji su uzeti u regionu budućeg akumulacionog jezera Bogovina (Srbija), ispitivani su na deset elemenata pomoću AAS, GFAAS i ICP. Sekvencijalna ekstrakcija u pet faza primenjena je za ispitivanje prirode asocijacije teških metala i identifikaciju njihovih supstrata. Korelaciona analiza je upotrebljena za određivanje supstrata teških metala. Dobra korelacija između mikroelemenata i određenih makroelemenata ukazuje na njihove supstrate. Većina mikroelemenata je pokazivala dobru korelaciju sa manganom i gvožđem. Samo neki od mikroelemenata su imali dobru korelaciju sa kalcijumom. Cink i kadmijum su imali jedan supstrat pre, a drugi posle simulacionog ogleda.