Akhmadjonova Yorqinoy Tojimurodovna 2022. STUDY OF ECOLOGICAL CONDITION AND CONTAMINATION OF HEAVY METALS (ISP-OES) OF AYDAR-ARNASOY LAKE SYSTEM BY OPTICAL EMISSION SPECTROMETRIC METHOD. JournalNX - A Multidisciplinary Peer Reviewed Journal. 8, 6 (Jun. 2022), 15–20. DOI:https://doi.org/10.17605/OSF.IO/P3JHK.