Date Item Type No Grouping

Method Development for the Determination of Elements in Hypericum perforatum L. (St John’s wort) Herb and Preparations using ICP-OES and Microwave Digestion. (2017) Jade Owen, Sara Evans, Amira Guirguis, Kathryn Kellett and Jacqueline Stair

Elemental fingerprinting of Hypericum perforatum (St John's Wort) herb and preparations using ICP-OES and chemometrics. (2016) Jade D. Owen, Stewart B. Kirton, Sara J. Evans and Jacqueline L. Stair

Presence of metals in herbal extracts. (2012) Amira Guirguis, Jade Owen and Jacqueline Stair

Elemental Profile of Hypericum perforatum (St John's Wort) Preparations Using Icp-Oes. (2010) Jade D. Owen, Sara J. Evans and Jacqueline L. Stair