Mucciarone David A, DeJong Hans B, Dunbar Robert B, Takeshita Yui, Albright Rebecca, Mertz Keaton
Stanford University, Earth System Science, Stanford, CA 94305, United States.
Monterey Bay Aquarium Research Institute, Moss Landing, CA 95039, United States.
HardwareX. 2021 Apr 22;9:e00197. doi: 10.1016/j.ohx.2021.e00197. eCollection 2021 Apr.
Oceanography and limnology projects often require the collection of water samples for chemical analysis. Manual water sample collection is labor-intensive and often difficult, especially in remote locations or during nighttime hours. Here we describe a compact and inexpensive autonomous submersible multiport water sampler (AutoSampler) that is largely fabricated with off-the-shelf parts making it easier to build and maintain. The system can collect up to 12 discrete samples at user controllable times or intervals and is operated using open source Arduino hardware and software that can be user modified to meet deployment requirements. While the underwater pressure housing presented here is custom built from readily available materials, there are many commercially available pressure case options that can be used as a substitute. The electronic mounting plates and battery pack are designed so that they can easily be adapted to fit into other pressure case housings. Samples can be collected into bags or syringes and sample volume is set by adjusting how long the peristaltic pump is actuated. This AutoSampler allows research that would otherwise be too labor-intensive or logistically difficult to conduct, especially in remote locations.
海洋学和湖沼学项目通常需要采集水样进行化学分析。手动采集水样劳动强度大且往往很困难，尤其是在偏远地区或夜间时段。在此，我们描述一种紧凑且廉价的自主潜水式多端口水样采集器（自动采样器），它主要由现成部件制成，便于构建和维护。该系统可在用户可控的时间或间隔采集多达12个离散样本，并使用开源的Arduino硬件和软件运行，用户可对其进行修改以满足部署要求。虽然这里展示的水下压力外壳是用现成材料定制的，但有许多商用压力外壳可供替代使用。电子安装板和电池组的设计使其能够轻松适配其他压力外壳。样本可采集到袋子或注射器中，通过调整蠕动泵的启动时间来设定样本体积。这种自动采样器使得那些原本因劳动强度过大或在后勤方面难以开展的研究，尤其是在偏远地区的研究得以进行。
