Development of a Remote Analyzer of the CO2 System in Seawater Based on In Situ Measurement for pH and TCO2

基于 pH 和 TCO2 原位测量的海水中 CO2 系统远程分析仪的开发

• 批准号: 9633022
• 负责人: Frederick Sayles
• 金额: $ 53.58万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 2005-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9633022&HistoricalAwards=false
• 关键词: Development; Remote; Analyzer; CO2; System

The Woods Hole Oceanographic Institution will undertake an ocean sciences instrumentation development project to develop, build and test an instrument to make autonomous in situ measurements of pH and Total carbon dioxide (TCO2)for extended periods from oceanographic moorings and remote platforms. The instrument will be designed to make measurements at frequencies less than (2/hr. Estimated unattended endurance will be about six months. Both components are based on existing laboratory methods. The pH measurements use well-developed spectrophotometric laboratory methods, while the TCO2 component utilizes exchange of CO2 across a semi-permeable membrane and detection of resulting conductivity changes in a dilute base. The objective is to achieve precision of ( (.002 pH units and (5 (mol/kg. To evaluate instrument performance, tests include short term wire deployments in the deep ocean, deployment on a benthic lander in the deep sea for 3 or 4 months, and near- surface deployment for approximately three months.

伍兹洞海洋学机构将开展一项海洋科学仪器开发项目，以开发，构建和测试一种工具，以从海洋模型系泊和远程平台进行长时间的pH和总碳二氧化碳（TCO2）进行现场测量。 The instrument will be designed to make measurements at frequencies less than (2/hr. Estimated unattended endurance will be about six months. Both components are based on existing laboratory methods. The pH measurements use well-developed spectrophotometric laboratory methods, while the TCO2 component utilizes exchange of CO2 across a semi-permeable membrane and detection of resulting conductivity changes in a dilute base. The objective is to achieve precision of （（.002 pH单元和（5（摩尔/千克），要评估仪器性能，测试包括在深海中的短期电线部署，在深海的底栖地着陆器上的部署3或4个月，以及近地面部署大约三个月。