Determination of Nickel and Cobalt in Cosmetic Products Marketed in Iraq Using Spectrophotometric and Microfluidic Paper-based Analytical Device (µPADs) Platform. Baghdad Sci.J [Internet]. 2022 Dec. 1 [cited 2024 May 7];19(6):1286. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/6539