6Xudong Yuan, Robert L. Chapman, Zhiqian Wu. Analytical methods for heavy metals in herbal medicines [J] .Phytochemical Analysis.2011.22.189-198.
7Anastasios. Economou. Recent developments in on- line electrochemical stripping analysis- An overview of the last 12 years [J].Analytica Chimica Acta 683,2010:38-51.