【作者】 余登斌； 董绍俊；

【Author】 Dengbin Yu;Shaojun Dong;The State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences;University of Science and Technology of China;

【机构】 中国科学院长春应用化学研究所电分析化学国家重点实验室； 中国科学技术大学；

【摘要】 随着现代化工、农业科技水平的快速发展,水环境污染问题也逐渐凸显,迫切需要开发稳定、灵敏的水体监测仪器。生物电化学系统传感器具有装置简单,条件温和,稳定性好等优点,在水污染预警领域受到广泛关注[1, 2]。如Fig. 1所示,我们以电磁阀,蠕动泵,定时程序控制器,数据采集器等元器件构建了基于生物电化学系统传感器的水体毒性在线监测装置。产电菌降解含有有机物的废水产生电压/电流,当含有有机物的废水中同时含有毒性物质的时候,毒性物质抑制产电菌的活性使产生的电压/电流减弱,量化电压/电流减弱程度得到毒性抑制率。用微生物三电极池对体积分数为0.01%, 0.03%和0.05%的含甲醛废水进行检测,抑制率分别为14.6%, 21.6%和36.4%。反应器内添加颗粒物缩短了响应时间,纳米材料修饰阳极电极提高了检查灵敏度。该系列性工作为进一步样机研制提供了样本,对水环境风险评估具有重要的现实意义。更多还原

【Abstract】 With the rapid development of modern industry and agricultural, the problem of water pollution is becoming more and more obvious. It is urgent to develop a stable and sensitive water monitoring instrument. The bioelectrochemical system biosensor has the advantages of simple device, mild condition and good stability, which is widely concerned [1, 2]. A biological sensor water toxicity online monitoring device was constructed. The inhibition ratios were 14.6%, 21.6% and 36.4% for 0.01%, 0.03% and 0.05% formaldehyde, respectively. The response time was shorten by adding particulate matter in the reactor, and the inspection sensitivity improved by modifying anode electrode with the nanomaterials. This series of works provide a sample for the further instrument design, which is of great practical significance to water environmental risk assessment.更多还原