Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei, Taiwan, ROC.
Ecotoxicology. 2012 May;21(4):1177-87. doi: 10.1007/s10646-012-0872-9. Epub 2012 Feb 23.
Arsenic (As) is the element of greatest ecotoxicological concern in aquatic environments. Effective monitoring and diagnosis of As pollution via a biological early warning system is a great challenge for As-affected regions. The purpose of this study was to synthesize water chemistry-based bioavailability and valve daily rhythm in Corbicula fluminea to design a biomonitoring system for detecting waterborne As. We integrated valve daily rhythm dynamic patterns and water chemistry-based Hill dose-response model to build into a programmatic mechanism of inductance-based valvometry technique for providing a rapid and cost-effective dynamic detection system. A LabVIEW graphic control program in a personal computer was employed to demonstrate completely the functional presentation of the present dynamic system. We verified the simulated dissolved As concentrations based on the valve daily rhythm behavior with published experimental data. Generally, the performance of this proposed biomonitoring system demonstrates fairly good applicability to detect waterborne As concentrations when the field As concentrations are less than 1 mg L(-1). We also revealed that the detection times were dependent on As exposure concentrations. This biomonitoring system could particularly provide real-time transmitted information on the waterborne As activity under various aquatic environments. This parsimonious C. fluminea valve rhythm behavior-based real-time biomonitoring system presents a valuable effort to promote the automated biomonitoring and offers early warnings on potential ecotoxicological risks in regions with elevated As exposure concentrations.
砷（As）是水生环境中最受关注的生态毒理学元素。通过生物预警系统对 As 污染进行有效监测和诊断是受 As 影响地区的一大挑战。本研究旨在通过合成基于水化学的生物可利用性和河蚌每日节律，设计一种用于检测水传播 As 的生物监测系统。我们将阀的每日节律动态模式和基于 Hill 剂量反应模型的水化学相结合，构建成基于电感式测压技术的感应测压技术的程序化机制，为快速、经济高效的动态检测系统提供了一种方案。我们在个人计算机上使用 LabVIEW 图形控制程序，全面演示了当前动态系统的功能。我们根据阀的每日节律行为验证了基于模拟溶解 As 浓度的实验数据。一般来说，当现场 As 浓度低于 1mg/L 时，该生物监测系统对检测水传播 As 浓度具有相当好的适用性。我们还发现，检测时间取决于 As 的暴露浓度。该生物监测系统可以特别为各种水生态环境下的水传播 As 活性提供实时传输信息。这个简单的河蚌阀节律行为实时生物监测系统代表了一个有价值的努力，推动了自动化生物监测，并为高暴露浓度地区的潜在生态毒理学风险提供了早期预警。
