Investigation of ginkgo biloba leave extracts as corrosion and Oil field microorganism inhibitors
1 College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an Shaanxi, 710065, People’s Republic of China
2 Shannxi Hai’an Industry Co., LTD, Xi’an, 710065, People’s Republic of China
Chemistry Central Journal 2013, 7:83 doi:10.1186/1752-153X-7-83Published: 7 May 2013
Ginkgo biloba (Ginkgoaceae), originating from China, now distributes all over the world. Wide application of Ginkgo biloba extracts is determined by the main active substances, flavonoids and terpenoids, which indicates its extracts suitable to be used as an effective corrosion inhibitor. The extracts of Ginkgo biloba leave have been investigated on the corrosion inhibition of Q235A steel with weight loss and potentiodynamic polarisation techniques. The inhibition efficiency of the extracts varies with extract concentration. The extracts inhibit corrosion mainly by adsorption mechanism. Potentiodynamic polarisation studies show that extracts are mixed type inhibitors. The antibacterial activity of the extracts against oil field microorganism (SRB, IB and TGB) was also investigated.