可见区分光光度法测量水体色度

Determination of water colority by spectrophotometry in visible spectrum

针对目前水质色度测量方法的局限性,采用分光光度法测量相关色度学参数,通过色度学参数与国家标准方法的色度值建立数值关系,从而测定水体的色度值。该方法不仅保证测量结果与现行国家标准测量结果一致,而且客观性强,稳定可靠,灵敏度更高,也更准确。克服了目视比色法需要水体与标准溶液色调一致的局限性,可以推广到其他色调的废水色度测量,系统经定标后就不需要标准溶液,降低了测试成本,也有利于应用于在线监测的色度测量仪器上。

According to the limitations of the determination methods of water colority, a new method is proposed using spectrophotometry to determinate the related eolorimetry parameters. Through the relationship between colorimetry parameters and colority value of national standard method, the colority values of any water sample can be determinated. The method not only guarantee the determination results are conforming to the results determinated by national standard method, but also is more objective, more reliable, more sensitive, more accurate. The method has overcome the limitation of visual colorimetry that requires the water sample＇s hue close to standard solutions. It can be extended to kinds of colority determination of waste water with other hue. The standard solutions is not needed after the measurement system has taken picketage tests. The cost of determination is decreased. That is used to the online colority determination instru ments also is helpful.