ISO 18191:2015 水的质量 海水中pHt的测定 用染料间甲酚紫指示剂法

标准编号：ISO 18191:2015

中文名称：水的质量 海水中pHt的测定 用染料间甲酚紫指示剂法

英文名称：Water quality — Determination of pHt in sea water — Method using the indicator dye m-cresol purple

发布日期：2015-09

标准范围

This International Standard specifies a spectrophotometric determination of the pHt of sea water on thetotal hydrogen ion concentration pH scale using the indicator dye m-cresol purple. The total hydrogenion concentration, [H+]t, is expressed as moles per kilogram of sea water. The method is suitable forassaying oceanic levels of pHt 7,4 to 8,2 for normal sea water of practical salinity ranging from 20 to 40.

标准预览图