海水中不同盐分水溶液对光的透射特性研究

发布时间：2018-01-18 10:29

本文关键词：海水中不同盐分水溶液对光的透射特性研究　出处：《河南师范大学》2015年硕士论文　论文类型：学位论文

【摘要】：海洋占地球表面的70%左右,海洋资源的开发利用对人类的生存和发展会产生巨大的影响,中国的海岸线约20000公里,海洋经济的发展已经成为我国国民经济的一部分,为了使海洋中丰富的资源能够被充分开发利用,很早人们就已经开始尝试各种方法进行水下探测和通信等活动,到目前为止海洋事业已经走向以高科技探测为基础的全面开发利用阶段。因激光具备亮度高、方向性好、单色性好和相干性好的特征,所以水下通讯及探测时所用的光源主要以激光为主。海水是一个包含多组分的繁杂体系,包含各种有机的、无机的、溶解的和悬浮的物质,这些成分的存在会影响激光在海水中传播时的透射率,因此对海水中不同盐分水溶液对光的透射特性研究对激光水下通信、激光探潜等领域研究具有一定的指导意义和参考价值。本文从海水中溶解物质的主要成分对激光的影响出发来进行研究的,论文实验研究了五种盐分(即NaCl、MgCl2、KCl、NaHCO3、和MgSO4)水溶液的透射特性,实验用紫外-可见-红外分光光度计,分别测量各溶解物质水溶液的透射光谱,并对透射光谱后进行了讨论和分析。介绍了海水的主要成分和影响海水的光学性质的一些因素,理论分析了激光在海水中传播过程中的吸收特性和散射特性。实验测量了溶液浓度与电导率的关系,并利用三种不同波长的激光分别研究了不同盐分水溶液的透射或吸收特性,给出了不同盐分水溶液对激光的透射曲线,并得出了相应的拟合经验公式,并通过作图分析得出在所配备的溶液浓度范围内透射率随浓度减小而增大的结论。相同传输距离、不同浓度水溶液对光的透射特性影响不同,希望研究结果能对以后激光水下透射特性的研究提供参考和依据。
[Abstract]:The ocean accounts for about 70% of the earth's surface. The exploitation and utilization of marine resources will have a great impact on the survival and development of mankind. The coastline of China is about 20000 kilometers. The development of marine economy has become a part of our national economy, in order to make the rich resources in the ocean can be fully exploited and utilized. People have been trying a variety of methods to carry out underwater exploration and communication activities. Up to now, the marine industry has moved to the stage of comprehensive development and utilization based on high-tech exploration, because of the high brightness of laser. Good directionality, good monochromatic and good coherence, so the underwater communication and detection of the light source mainly used by the laser. Seawater is a multicomponent complex system, including a variety of organic, inorganic. The existence of these components will affect the transmittance of laser propagating in seawater, so the transmission characteristics of different salt aqueous solutions to light in seawater are studied. The research of laser submersible exploration and other fields has certain guiding significance and reference value. In this paper, the effects of the main components of dissolved substances in seawater on laser are studied. The transmission characteristics of aqueous solutions of five salts (NaCl-MgCl2KCl-KCl-KCl-NaHCO3 and MgSO4) have been experimentally studied. The UV-Vis infrared spectrophotometer has been used in the experiment. The transmission spectra of aqueous solutions of dissolved substances were measured respectively. After the transmission spectra were discussed and analyzed, the main components of seawater and some factors affecting the optical properties of seawater were introduced. The absorption and scattering characteristics of laser propagating in seawater are analyzed theoretically, and the relationship between solution concentration and conductivity is measured experimentally. The transmission and absorption characteristics of different salt aqueous solutions are studied by using three different wavelengths of lasers. The transmission curves of different salt aqueous solutions to the laser are given, and the corresponding fitting empirical formulas are obtained. It is concluded that the transmittance increases with the decrease of concentration in the range of concentration of the solution. At the same transport distance, different concentrations of aqueous solutions have different effects on the transmission characteristics of light. It is hoped that the results can provide a reference and basis for the study of the underwater transmission characteristics of laser in the future.
【学位授予单位】：河南师范大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P733.33

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