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前言SO_4~(2-)是地下水中主要化学组分之一,其含量大小与围岩成分及水动力条件有关。在地震预报工作中,对地下水中SO_4~(2-)进行观测研究,有其一定的意义.对于地震前兆观测项目,要求分析方法准确、快速、稳定。SO_4~(2-)的分析方法颇多,而快、准、稳兼备者却不多见,因之,多年来人们在排除干扰、改进指示剂等方面进行了不少研究,于是方法纷呈,不胜枚举,但仍或手续繁琐,或受干扰物影响、误差较大等,不适宜于地震水化监测与研究.本文鉴于广东省大多数水点SO_4~(2-)含量在100mg/l以下,提出把分光光度比浊法应用于地震
Preface SO_4 ~ (2-) is one of the main chemical components in groundwater, and its content is related to the rock composition and hydrodynamic conditions. In the earthquake prediction work, it is of certain significance to observe the SO 4 4- (2-) in groundwater, and require the analysis method to be accurate, rapid and stable for the earthquake precursory observation project. SO_4 ~ (2) analysis of a lot of ways, and fast, accurate and stable are rare, so people over the years to exclude interference, improve the indicator and so on a lot of research, so the method is varied, It is not suitable for the monitoring and research of earthquake hydration because of its complicated or complicated procedures or the influence of interferences and large error etc. In this paper, the content of SO 4 2- in most water points in Guangdong Province is about 100mg / l In the following, it is proposed to apply spectrophotometry to earthquakes