Gao H-W, Zhou J-G. Primary-Secondary Wavelength Spectrophotometric Determination of Trace Amounts of Lignin Tannin in Water. ajc [Internet]. 2010 Mar. 30 [cited 2024 Nov. 5];12(1):265-9. Available from: https://asianpubs.org/index.php/ajchem/article/view/22917