Pham Thi Kim Giang & Dang Xuan Thu 2021. Spectrophotometric Atomic Absorption Assessment of Trace Amounts of Arsenic and Some Heavy Metals in Their Treatment Technology by Iron Powder. Current Advances in Chemistry and Biochemistry Vol. 6. (May 2021), 36–43. DOI:https://doi.org/10.9734/bpi/cacb/v6/8293D.