Freshwater & Lakes Division, National Institute of Oceanography, Fisheries (NIOF), Cairo, Egypt.
Environ Sci Pollut Res Int. 2020 Jul;27(20):25475-25493. doi: 10.1007/s11356-020-08918-7. Epub 2020 Apr 29.
Nasser Lake provides more than 95% of the Egyptian freshwater budget. The levels, spatial distributions, and risk assessments of heavy metals and natural radioactivity were investigated in the water and sediments in the main channel and khors (side extensions) of Nasser Lake in January 2017. Several indices were used to determine the quality and pollution degree of the water and sediments. The water indices included the heavy metal pollution index and metal contamination index, while the sediment indices were based on the (a) the metal levels as the enrichment factor and geo-accumulation index, and (b) the radioactivity as radium equivalent activity, absorbed dose rate, and external hazard indices. All index values were lower than their global mean values. Also, the results of the noncarcinogenic human health risk via water ingestion were below the threshold risk level. The obtained results indicate the safely used of Nasser Lake water for different purposes.
纳赛尔湖提供了埃及 95%以上的淡水预算。2017 年 1 月，对纳赛尔湖主河道和 khors（侧支）的水和沉积物中的重金属和天然放射性物质的含量、空间分布和风险评估进行了调查。采用了几种指数来确定水和沉积物的质量和污染程度。水的指标包括重金属污染指数和金属污染指数，而沉积物的指标则基于(a)金属含量作为富集因子和地质累积指数，以及(b)放射性作为镭等效活度、吸收剂量率和外部危害指数。所有指数值均低于全球平均值。此外，通过饮水摄入的非致癌性人体健康风险的结果低于阈值风险水平。所得结果表明，纳赛尔湖的水可安全用于不同目的。
