期刊名称：International Journal of Environment and Geoinformatics
电子版ISSN：2148-9173
出版年度：2017
卷号：4
期号：3
页码：227-239
DOI：10.30897/ijegeo.348826
语种：English
出版社：IJEGEO
摘要：15.00 Normal 0 21 false false false TR X-NONE X-NONE Thisstudy aimed to determine the vertical distribution of heavy metals in a 72cm-long core sample from Lake Tortum in order to shed light on the implicationsof potential ecological risks. Analysis was based on the use of environmentalindices such as the Integrated Pollution Load Index (PLI) and PotentialEcological Risk Index (PER). Results reveal that, except for Pb, Mn and Hg, thelowest concentrations of heavy metals occur at a core depth of between 2 cm and20 cm for Cu, Zn, Ni, Fe, As, Cd, Cr and Al. The highest concentration wasfound at sampling intervals of 36 cm and 50 cm, with the exception of Pb, Mn,Hg and Ni. The PLI values from bottom to top are less than 1 while the levelwith the nearest value to the background value lies at a depth between 24 cmand 26 cm. The PER index results suggest a low ecological risk level for Cu,Pb, Zn, Ni, Mn, Fe, As, Cr, and Al; however, Cd and Hg constitute an ecologicalthreat to the lake ecosystem.
关键词：Sediment; Heavy Metals; Integrated Contamination Load Index; Potential Ecological Risk Index; Lake Tortum
