Novel hydrazinium polyacrylate-based electrochemical gas sensor for formaldehyde

详细信息    查看全文

• 作者：Eva Menart ; ^{eva.menart@ki.si" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Vasko Jovanovski ^{vasko.jovanovski@ki.si" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Samo B. Hočevar ^{samo.hocevar@ki.si" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Gas sensor ; Formaldehyde ; Hydrazinium polyacrylate ; Voltammetry
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：238
• 期：Complete
• 页码：71-75
• 全文大小：948 K

文摘

A disposable electrochemical sensor was developed for convenient detection of gaseous formaldehyde. The sensor is composed of a three-electrode screen printed system modified with hydrazinium polyacrylate which was synthesised to serve a dual purpose, i.e. as formaldehyde accumulation/derivatisation medium, and as polyelectrolyte enabling voltammetric measurements. It exhibited a linear response in the examined concentration range of 4–16 ppm gaseous formaldehyde in combination with 120 min accumulation; also sub-ppm concentration levels could be detected when the exposure time was extended.