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本实验目的是研究在空气流的条件下海水-空气界面硼的行为。将25℃和35℃的干燥空气流以非冒泡或冒泡的方式通过海水表面或通入海水,采用冰冷凝器和KOH溶液浸泡过的纤维素过滤器收集空气流中的硼,当无硼空气流在海水面上通过时,硼会被蒸发而进入空气流中,温度越高,硼含量也较高。空气流通过海水的冒泡试验中,空气流中的硼含量与空气流流量成正比,在此情况下,空气流中的硼主要来自雾化的小液点海水。非冒泡试验中收集的硼同位素分馏表明,较轻的硼同位素10B富集在空气流中,表明海水蒸发时,硼同位素分馏主要由动力因素所引起。
The purpose of this experiment was to investigate the behavior of boron at the seawater-air interface under air flow conditions. A stream of dry air at 25 ° C and 35 ° C is passed through the surface of seawater or seawater in a non-bubbling or bubbling manner, and the boron in the air stream is collected using an ice condenser and a cellulose filter soaked in a KOH solution. When the flow of boron air passes over the surface of the sea, boron is evaporated and enters the air stream. The higher the temperature, the higher the boron content. Airflow Through the bubbling test of seawater, the amount of boron in the air stream is proportional to the air flow, in which case the boron in the air stream is mainly from the atomized small liquid point seawater. Boron isotope fractionation collected in the non-bubbling test shows that the lighter boron isotope 10B enriches in the air stream, indicating that the boron isotope fractionation is mainly caused by the kinetic factors when seawater is evaporated.