Accurate Analysis of Dissolved States of Carbon Dioxide in Sea Water and Development of On-site Measuring System

本研究的目的是开发一种新的仪器，用于准确的现场测定大气和海水中的总二氧化碳，并准确，快速地测量大气和海洋之间的交换速率和质量的现场。在本研究中，我们开发了一种新的便携式分析仪和一种新的检测方法，在大气中的二氧化碳和海水中的总碳酸盐，还开发了一种方法，用于制备无碳酸盐的纯净水和用于测定和去除碳酸盐在碱性溶液中。通过使用这些新方法，实现了二氧化碳和碳酸盐的准确和灵敏的测定，根据平衡原理澄清了溶解在海水中的碳酸盐物种，并澄清了二氧化碳在大气和海洋之间的准确分配行为。本研究的主要结果如下：1.发展 关于我们 便携式沃茨中总碳酸盐分析仪：该系统用于现场水样中总碳酸盐和大气中二氧化碳的测定。该系统是基于流动注射技术，再加上一个气体扩散装置，这是在本研究中开发的，是非常有效的二氧化碳的扩散。该系统可以通过12 V电池和100 V电池工作，重量为8 kg，宽16 cm x高16 cm x深32 cm。海水、河水、雨水沃茨等水样可直接进样，3分钟内完成测量。碳酸根高灵敏检测试剂的研制：本研究合成了约25种偶氮染料，并找到了一种新型试剂，该试剂可用于水样中总碳酸根的灵敏检测，检测波长为450 nm.大气中二氧化碳测定方法的建立：本研究建立的方法是基于空气样品中的二氧化碳被置于塑料注射器中的三乙醇胺溶液吸附，并通过新开发的分析仪测量吸附溶液中的碳酸盐.二氧化碳在海水中溶解状态的分析：通过求解溶液中存在的平衡态，可以估算海水样品中溶解态的种类及其浓度，并首次分析了二氧化碳在空气和水相中的分配平衡和分配速率。少

The aims of this study are to develop a novel instrument for the accurate on-site determination of total carbon dioxide in the atmosphere and seawater and to measure accurately and rapidly the exchange rate and mass of carbon dioxide between the atmosphere and the sea on site. In the present study, we developed a new portable analyzer and a new detection method for the carbon dioxide in the atmosphere and the total carbonate in the seawater, and also developed a method for the preparation of carbonate-free purified water and for the determination and the removal of carbonate in alkaline solutions. By using such novel methods, accurate and sensitive determination of carbon dioxide and carbonate was achieved, the carbonate species dissolved in seawater was clarified on the basis of the equilibrium principle, and the accurate distribution behavior of carbon dioxide between the atmosphere and the sea was clarified. The main results obtained in this study are as follows.1. Development of a … More portable analyzer for total carbonate in waters : This system was used for the determination of total carbonate in water samples and carbon dioxide in the atmosphere on site. The system is based on a flow injection technique coupled with a gas-diffusion apparatus, which was developed in the present study and is very effective for the diffusion of carbon dioxide. This system can work by a 12 V battery, as well as 100 V, and is 8 kg weigh, 16 cm wide x 16 cm high x 32 cm deep. The aqueous samples, such as sea, river and rain waters, can be injected directly and measured within 3 min.2. Development of highly sensitive detection reagent for carbonate : About twenty-five azo dyes were synthesized in this study, and a novel reagent was found. The reagent can be used for sensitive detection of total carbonate in water samples at 450 nm of LED.3. Development of the determination method for carbon dioxide in the atmosphere : The method developed in this study is based on the adsorption of carbon dioxide in air samples into a triethanolamine solution in plastic syringes and the measurement of carbonate in the adsorption solutions by the newly developed analyzer.4. Analysis of the dissolved states of carbon dioxide in sea water : The estimation of the dissolved species and their concentrations in sea water samples could be achieved by solving the equilibriums existing in the solutions, and the analysis of the distribution equilibrium and the distribution rate of carbon dioxide between the air and the water phase were carried out, for the first time, in this study. Less