Gao, H.-W. (2010) “Primary-Secondary Wavelength Spectrophotometry to Improve the Determination of Trace Amounts of Nickel in Waste Water”, Asian Journal of Chemistry, 11(3), pp. 862–866. Available at: https://asianpubs.org/index.php/ajchem/article/view/23390 (Accessed: 3 October 2024).