Kajian kualiti air telah dijalankan ke atas Sungai Shiroud di Iran. Sungai ini terbentang sejauh 32 km bermula dari gunung Albourz dan berakhir di bahagian selatan Laut Caspian
Shiroud River of Iran was chosen in this study to monitor its water quality. The river has a span of 32 km starting from Albourz mountainous and end up at the southern part of
Caspian Sea
