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虽说地球是水的行星,但可供人类使用的淡水总量仅10.5万立方千米。由于人类人口急剧增长,经济飞速发展,水被污染的现象已经非常严重。“水的危机”、“水的恐慌”将悄悄地与人类同步迈入21世纪。人们日常生产、生活都会遇到用水的问题。一般人不可能拥有分析水质的仪器,全凭肉眼观察水质好坏。因此,通过目测水色判断水质,对普通百姓具有实用意义。水体颜色主要决定于水体的光学性质,即水体对光的选
Although Earth is a water planet, the total amount of fresh water available to humans is only 105,000 cubic kilometers. Due to the rapid growth of the human population and rapid economic development, the water pollution has become very serious. “The Crisis of Water” and “Panic of Water” will quietly enter the 21st century simultaneously with human beings. People in daily production, life will encounter water problems. Most people can not have the equipment to analyze the water quality, with the naked eye to observe the water quality is good or bad. Therefore, judging water quality by visual water color is of practical significance to ordinary people. Water color is mainly determined by the optical properties of the water body, that is, the choice of water on the light