| QUANTITATIVE DETERMINATION OF THE SALINITY OF SEAWATER DROPLETIN 10-6 TO 10-10 GRAM |
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| 作者姓名： | 钱正绪 彭放英 |
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| 作者单位： | Institute of Oceanology，Academia Sinica，Qingdao，Institute of Oceanology，Academia Sinica，Qingdao |
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| 基金项目： | The research was supported by the Chinese National Natural Science Foundation |
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| 摘 要： | The rate of evaporation of seawater droplets in the airsea boundary layer can be estimated by its salinity change compared to the sea surface salinity. A micro-chemical method based on Farlow (1954) is developed for quantitative determination of the salinity of an individual droplet without the error due to further evaporation after sampling. A halide ion-sensitive sampling surface is prepared by colloidally dispersing brown silver dichromate into the gelatin layer of a commercially available film. The reaction of soluble chlorides with the silver salt leaves a clear white halo with diameter a on the brown film to reveal the volume of the droplet- After the film is developed in a water vapor saturated atmosphere, the halo grows to diameter d with the original as the embryo to indicate the quantity of chloride ion involved in the action. The ratio of d/(a ) is a function of the salinity of the droplet. The method can be used to determine the salinity of seawater droplet of 10 to 10 ~10 gram. Details of t
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