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中文摘要：
以高速摄像仪与显微拉曼光谱联用研究聚四氟（疏水）乙烯基底和石英（亲水）基底上的单个海水液滴的快速风化过程.海水液滴风化的形貌图像达到毫秒时间分辨率和微米空间分辨率.通入干氮气后海水液滴在石英基底上发生快速风化过程,首先析出Na_2Ca_5（SO_4）_6·3H_2O和Na_（2x）Ca_（6x）（SO_4）_6·3H_2O（0〈x〈1）晶体,然后析出NaCl晶体,最后析出KMgCl_3·6H_2O晶体.我们发现在快速降低湿度的过程中析出钙钠复盐,在缓慢降低湿度的过程中析出CaSO_4·2H_2O,并已经确定各种结晶产物的位置以及Na_2Ca_5（SO_4）_6·3H_2O和CaSO_4·2H_2O两种晶体的生长速率,并在聚四氟乙烯基底上观察到中空结构的海盐颗粒.
英文摘要：
The rapid efflorescence of individual seawater droplets on polytetrafluoroethylene（PTFE, hydrophobic） and quartz（hydrophilic） substrates was investigated using a high-speed camera for imaging and micro-Raman spectroscopy to spatially resolve the particle composition.The morphology of the evaporating sea salt particles was captured using millisecond time resolution and micrometer spatial resolution.Upon rapid desiccation with dry N_2 on a quartz substrate,Na_2Ca_5（SO_4）_6·3H_2O and Na_（2x）Ca_（6-x）（SO_4）_6·3H_2O（0x1） crystallized first followed by NaCI and finally KMgCI_3·6H_2O.We determined the formation behavior of the mixed sodium-calcium salts as crystallization products during the quick desiccation process and CaSO_4·2H_2O during the slow desiccation process.In addition,the crystallization location of different crystal products were identified and the growth speed of Na_2Ca_5（SO_4）_6·3H_2O crystal was compared with that of CaSO_4·2H_2O crystal.Moreover,sea salt particles with a hollow structure were observed on the PTFE substrate at the end of the quick efflorescence process.
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