Applied heavy elements pollution index (HPI) as a water pollution indicator at Al- Chibayish marsh in Thi-Qar province, southern Iraq. (2022). Mesopotamia Environmental Journal (mesop. Environ. J) ISSN: 2410-2598, 5(4), 58-71. https://mej.uobabylon.edu.iq/index.php/mej/article/view/20