Digital Submersible Chemical Analyzer for Oceanographic Science

该海洋科学仪器开发项目将继续开发可广泛用于海洋学研究的潜水式化学分析仪(扫描仪)。新仪器将适合部署在剖面仪或研究潜水器上，以及海底通量舱和深拖车等平台上，以及长期(长达四个月)部署的系泊设备上。拟议的设计简单而灵活，这将使其既可用于常量营养素，也可用于微量元素。这一新一代的现有扫描仪需要一个新的泵送系统和其他改进。将使用比以前的蠕动泵更小、更轻的微型电磁泵，并且它们可以单独控制。单独的微处理器可以灵活地控制每个流动流，允许每个试剂、样品和标准的不同的流动率(包括不流动)。这将促进分析优化，并使在同一扫描仪系统上访问几个不同的分析成为可能。第四代扫描仪的目标是比以前的版本更简单和更坚固的系统，可以用于更多种类的研究。显然有必要改进能够在现场进行化学测量的仪器。许多大型研究项目的科学计划都需要这种能力。

This Ocean Sciences Instrumentation Development project will continue development of a submersible chemical analyzer (Scanner) that can be widely used for oceanographic studies. The new instrument will be suitable for deployment on profiling instruments or research submersibles, as well as on platforms such as benthic flux chambers and deep towed vehicles, and on moorings for longer term (up to four-month) deployments. The proposed design is simple and flexible, which will allow it to be used for both macro-nutrients, as well as trace elements. This new generation of the existing Scanner requires a new pumping system and other refinements. Micro-solenoid pumps will be used that are smaller and lighter than previous peristaltic pumps and they can be individually controlled. The flexibility of individual microprocessor control of each flow stream allows variable flow rates (including no flow) for each reagent, sample and standard. This will facilitate assay optimization and make it possible to access several different analyses on the same Scanner system. The goal of this fourth generation scanner is a substantially simpler and more robust system than previous versions that can be used in a greater variety of studies. There is a clear need for improved instruments capable of performing chemical measurements in situ. The science plans for many large scale research projects call for this capability.