Hou, Dekun, Otgonbayar Khureldavaa, Fujin Zhang, Jiang He, and Badgaa Amarsanaa. “Determination of OCPs and PCBs in Environmental Water Samples by GC-DLLME Optimized by Response Surface Methodology”. Mongolian Journal of Chemistry 20, no. 46 (December 27, 2019): 13–23. Accessed July 22, 2024. https://mongoliajol.info/index.php/MJC/article/view/1237.