Removal of Dissolved Oxygen Interference in the Amperometric Detection of Monochloramine Using a pH Control Method

被引：0
|
作者：
Seymour, Ian [1 ,2 ]
O'Sullivan, Benjamin [2 ]
Lovera, Pierre [2 ]
Rohan, James F. [1 ]
O'Riordan, Alan [2 ]
机构：
[1] Tyndall Natl Inst, Electrochem Mat & Energy Grp, Cork, Ireland
[2] Tyndall Natl Inst, Nanotechnol Grp, Cork, Ireland
来源：
2019 IEEE SENSORS | 2019年
基金：
爱尔兰科学基金会;
关键词：
Monochloramine; Dual electrode sensors; pH; Water quality; In-line sensing; Generator-Collector; Dissolved oxygen; CHLORAMINES; WATER;
D O I：
10.1109/sensors43011.2019.8956674
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Monochloramine amperometric determination was investigated using a pH control method to eliminate dissolved oxygen as an interferent. This method allowed local pH conditions to become more acidic, causing the production of dichloramine. This species showed an onset of electro-reduction at 450 mV, far outside of the oxygen reduction region. Monochloramine was calibrated using this method and showed good linearity (0.99) and a limit of detection of 0.03 ppm.
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页数：4
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