The Sidi Moussa lagoon, located in western coastal Morocco and ranked as a wetland of biological and ecological importance (Ramsar site), is contaminated due to its proximity to the industrial phosphate plants and other anthropogenic activities around it. This study was carried out to assess the current environmental state of the lagoon as well as historical inputs of pollutants over several decades. Three sediment cores were collected and analyzed for the determination radionuclide activities (²¹⁰Pb, ²²⁶Ra, ²³⁸U and ¹³⁷Cs) by gamma spectrometry and element concentrations by Inductively Coupled Plasma – Mass Spectrometry. Age-depth relationships were established in two cores using ²¹⁰Pb and ¹³⁷Cs as chronometer and time-marker, respectively, and Constant Rate of Supply as radiometric dating model. ²¹⁰Pb and ²³⁸U were present in sediment in activities much higher than those reported for non-contaminated coastal systems. Sediment accumulation rates showed a slight increase over time with a depth-averaged value of 0.16 g cm⁻² y⁻¹.

Enrichment Factors and practically derived sediment quality guidelines were used to assess sediment contamination/pollution and toxicological effects linked with the measured concentrations of sediment-bound elements. The profiles of Cr, Co, Cu, As and Ni displayed maximums at depths matching the start of the phosphate industrial plants, and decreasing concentrations in the sections above the maximums, revealing the positive effects of the environmental management system adopted by the phosphate company since early 2000s.

Sidi Moussa泻湖位于摩洛哥西部沿海地区，被列为具有生物学和生态重要性的湿地（拉姆萨尔湿地），因其靠近工业磷酸盐工厂和周围其他人为活动而受到污染。进行这项研究是为了评估泻湖的当前环境状况以及几十年来污染物的历史输入。收集了三个沉积物岩心，并通过伽马能谱法分析了放射性核素活度（²¹⁰ Pb，²²⁶ Ra，²³⁸ U和¹³⁷ Cs），并通过电感耦合等离子体质谱法分析了元素的浓度。使用²¹⁰ Pb和¹³⁷在两个核心中建立了年龄深度关系Cs分别作为天文钟和时间标记，Cost for Supply Rate作为辐射定年模型。沉积物中的²¹⁰ Pb和²³⁸ U含量远高于未受污染的沿海系统所报告的活动。沉积物累积率随时间推移略有增加，深度平均值为0.16 g cm ^-2 y ^-1。

富集因子和实际得出的沉积物质量准则用于评估沉积物污染/污染以及与测得的沉积物结合元素浓度相关的毒理作用。Cr，Co，Cu，As和Ni的轮廓在与磷酸盐工业工厂的开始相匹配的深度处显示最大值，并且在最大值以上的区域中浓度降低，这揭示了磷酸盐公司自从采用以来的环境管理体系的积极作用2000年代初期。