title: Electrochemical sensing of bisphenol A by graphene-1-butyl-3-methylimidazolium hexafluorophosphate modified electrode.
abstract: Simple and low cost sensor for the determination of bisphenol A (BPA) based on graphene-1-butyl-3-methylimidazolium hexafluorophosphate (BmimPF6) modified glassy carbon electrode was developed. It was an irreversible oxidation process of BPA on the modified electrode. Experimental conditions such as modified volume, pH, scan rate and accumulation time have been optimized. The modified electrode provided a considerable enhancement of BPA oxidation. The electrochemical response of BPA on this modified electrode was better than those on the graphene modified electrode and bare electrode. The detection limit of BPA was 8nM (S/N=3), the linear range was from 20nM to 2µM. The modified electrode has been employed for determination of milk and soda spiked BPA successfully.
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China. Electronic address: jingdaping@126.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Jing
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China.
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China.
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Wu
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Bao
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China.
authors.forename: Yanli
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China.
authors.forename: Chengzhu
authors.initials: C
authors.lastname: Liang
authors.affiliation: Technology Center of Shandong Entry-Exit Inspection & Quarantine Bureau, No. 70 Qutangxia Road, Qingdao, Shandong 266002, China.
authors.forename: Wenqing
authors.initials: W
authors.lastname: Cao
keywords: Bisphenol A; Graphene; Ionic liquid