Investigation of Selenium and Manganese Levels in Al-Dalmaj Marsh, Iraq by Using ICP-AES

Abstract

In this study, the levels of selenium and manganese were evaluated in water, sediments, and fish from al-Dalmaj marshal , which is located in central Iraq. It is important for supplying fish to the provinces and is considered the main basin where agricultural runoff, rainwater, and other waters accumulate. These levels were found during measurements using an ICP-AES device (Inductively Coupled Plasma Atomic Emission Spectroscopy).Samples were collected between March and July 2024. Average values were: water — Mn 4,880.48 µg L⁻¹, Se 274.09 µg L⁻¹; fish — Mn 1,408.06 µg L⁻¹, Se 142.12 µg L⁻¹; sediment — Mn 25,587.99 µg L⁻¹, Se 232.42 µg L⁻¹. The measurements exceeded the limit allowed by the World Health Organization (WHO), which indicates environmental risks to human health. Continuous monitoring and taking necessary measures to reduce risks and limit pollution are recommended.