【作者】 肖寒霜； 李晓红； 王枫； 董金铃； 卢培栋； 张韫宏；

【Author】 XIAO Han-shuang, LI Xiao-hong, WANG Feng, DONG Jin-ling, LU Pei-dong, ZHANG Yun-hong The Institute for Chemical Physics, Beijing Institute of Technology, Beijing 100081, China

【机构】 北京理工大学化学物理研究所；

【摘要】 海水的风化是一系列复杂的过程,文章利用共聚焦拉曼光谱仪在相对湿度为99％～2％的范围内对该过程进行了研究。实验表明:在高湿度(≥78％)时,海水主要以纯液态的形式存在;降低湿度至78％以下时,海水中首先析出硫酸盐,由其峰位结合水峰形状推测其为硫酸镁;继续降低湿度,至低于62％左右时, 溶液中骤然出现大量方形晶体,该晶体为NaCl;而湿度低至42％后溶液逐渐消失,同时伴随着水合氯化镁生成。更多还原

【Abstract】 The efflorescence processes of seawater particles were studied in the relative humidity (RH) range from 99% to 2% using the micro-Raman spectroscopy. When the RH was higher than 78%, the particles were aqueous. Reducing the RH continuously, the micro-crystals of the sulfate were observed at RH ~78% firstly. This was followed by a crust of many relatively larger cubic NaCl crystals at RH ~62% and by few micro crystals of the hydrated magnesium chloride at RH -42%.更多还原