Abstract

Dates are the staple food for Arabs as well as the major export crop in the Middle East. In this work, we analyzed the concentration of toxic elements in commonly used fertilizers and evaluated metal accumulation in soil and date palm. Different types of fertilizers randomly selected from fertilizer dealers in the UAE were investigated for their toxic metals. Soil and plant samples collected from continuously fertilized date plantations were analyzed. Sandy loam soil (0–30 cm) samples were collected from date palm plantations continuously fertilized for more than 10 years (11 samples) and unfertilized date palm plantations (11 samples). A significant increase in chromium (Cr) and cadmium (Cd) was observed in the leaves of the fertilized date palms, whereas, in date palm fruits, the concentration of copper (Cu) was higher. A distinct correlation was observed between the total and the available metal concentrations in the soil for Cd and Cu. The average concentrations of toxic metals, however, remained within the limits of those used worldwide. It is important to encourage manufacturers to indicate the concentrations of toxic elements on the fertilizer labels due to environmental and health implications.

抽象的

枣是阿拉伯人的主要食品，也是中东主要的出口作物。在这项工作中，我们分析了常用肥料中有毒元素的浓度，并评估了土壤和枣椰子中金属的积累。调查了从阿联酋的化肥经销商中随机选择的不同类型的化肥的有毒金属。分析了从连续施肥的枣园中收集的土壤和植物样品。砂壤土（0–30 cm）样品是从连续施肥10年以上的枣椰林（11个样品）和未施肥的枣椰林（11个样品）中收集的。在受精的椰枣叶片中观察到铬（Cr）和镉（Cd）的显着增加，而在椰枣果实中，铜（Cu）的浓度更高。在土壤中镉和铜的总量与有效金属含量之间观察到明显的相关性。但是，有毒金属的平均浓度仍在全球范围内使用。重要的是，由于对环境和健康的影响，鼓励制造商在肥料标签上注明有毒元素的浓度。