ABSTRACT

This study determined the total concentrations, chemical speciations and their potential ecological risks of 11 metals from soil samples collected from 13 different locations in the Göksu Delta, a special environmental protection site in Turkey. In accordance with the total metal concentration results the contamination levels caused by the 11 heavy metals decreased in the following order: zinc (Zn) > nickel (Ni) > chromium (Cr) > lead (Pb) > vanadium (V) > arsenic (As) > copper (Cu) > cobalt (Co) > selenium (Se) > cadmium (Cd) > molybdenum (Mo).

As a result of the speciation test, it was determined that the most mobile metals in the soil samples were Cd, Se and Zn. It was concluded that presence of Cd and Zn in particular were anthropogenic and that the metals other than As, Se and Zn were mostly bound to the organic fraction (F4) in soils. The ecological risk factors of As and Cd were found to be above the limit value in most soil samples. According to the Risk Assessment Code (RAC), the soils were in a high-risk group in terms of Zn and were in a moderate-risk group in terms of Cd, Mo and Se.

抽象的

这项研究确定了从Göksu三角洲（土耳其的一个特殊环境保护地点）的13个不同地点收集的土壤样品中的11种金属的总浓度，化学形态及其潜在的生态风险。根据总金属浓度结果，由11种重金属引起的污染水平按以下顺序降低：锌（Zn）>镍（Ni）>铬（Cr）>铅（Pb）>钒（V）>砷（ As）>铜（Cu）>钴（Co）>硒（Se）>镉（Cd）>钼（Mo）。

作为形态测试的结果，确定土壤样品中最易移动的金属为Cd，Se和Zn。结论是，特别是Cd和Zn的存在是人为的，并且As，Se和Zn以外的金属大部分与土壤中的有机部分（F4）结合。在大多数土壤样品中，As和Cd的生态风险因子均高于极限值。根据《风险评估规范》（RAC），土壤以锌为高风险组，以镉，钼和硒为中度风险组。