Digital Submersible Chemical Analyzer for Oceanographic Science

该海洋科学仪器开发项目将继续开发一种可广泛用于海洋学研究的潜水化学分析仪（扫描仪）。新仪器将适合部署在剖面仪器或研究潜水器上，也适合部署在底栖通量室和深水拖曳车辆等平台上，以及长期（长达4个月）的系泊上。所提出的设计是简单而灵活的，这将允许它既用于宏观营养素，也用于微量元素。现有的新一代扫描仪需要新的泵送系统和其他改进。微型螺线管泵将被使用，比以前的蠕动泵更小，更轻，他们可以单独控制。单个微处理器控制每个流的灵活性允许每个试剂，样品和标准的可变流速（包括无流量）。这将有助于分析优化，并使在同一扫描仪系统上访问几种不同的分析成为可能。这第四代扫描仪的目标是一个实质上更简单，更强大的系统比以前的版本，可以在更广泛的研究中使用。显然需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.