Marine sciences center

The Marine Sciences Center at the University of Basra organized a scientific lecture on the assessment of the Shatt Al-Arab waters using the Organic Pollution Index
It was delivered by Dr. Nada Mofeed Abdullatif, a lecturer in the Marine Biology Department at the center
The lecture aimed to clarify the method of evaluating the waters of the Shatt al-Arab using the organic pollution index. The study included three stations, the first is Al-Sharsh, the second is Al-Salihiya, and the third is Al-Dubeeb. Water samples were collected monthly from December 2017 to November 2018. Five environmental parameters were used, as per the Organic Pollution Index (OPI) including BOD.
(BOD), chemical oxygen requirement (COD), reactive nitrate (NO3), ammonium ion (NH4) and total phosphate (TP). The highest BOD was 9 mg/L in Al-Sharash station in July and the lowest values ​​of 1 mg/L in Al-Duib station during
December, January, February and April. The highest chemical requirement for oxygen was 250 mg/L recorded in Al-Sharsh station in September and the lowest value was 6.2 mg/L in Al-Duib station during the month of December. The highest value of the effective nitrate was 41.51 mg nitrogen-nitrate/liter of Al-Salhia station soil during the month of May, and the lowest value was 1.49 mg nitrogen-nitrate/liter of Al-Sharsh station soil during the month of December. The highest value of ammonium ion was 7.7 mg / liter in Al-Salhia station in December and the lowest value was 0.5 mg / liter in Al-Sharsh plant during the month of June, while the value of phosphate was 0.23 mg / liter, 1.99 mg / liter in Al-Sharsh plant in August and September, respectively.
The highest value of the organic pollution index was 2.56 in the Salhia station in Ibb and the lowest value was 0.69 in the Al-Duib station in April, while the annual rate of membership and the pollution index for the first, second and third stations reached 1.55, 1.81 and 1.47, respectively, and 1.61 in Shatt Al-Arab.