ISO 23913:2006规定了测定各类水中铬（VI）的流动注射分析（FIA）和连续流动分析（CFA）方法。该方法适用于以下质量浓度范围:FIA（地表水、渗滤液和废水为20至200微克/升，200至2000微克/升）和CFA（饮用水、地下水、地表水、渗滤液和废水为2至20微克/升，20至200微克/升）。可通过改变操作条件来改变应用范围。可通过这些方法对海水进行分析，其灵敏度会发生变化，并在试剂和校准溶液适应样品的盐度后进行分析。

ISO 23913:2006 specifies flow injection analysis (FIA) and continuous flow analysis (CFA) methods for the determination of chromium(VI) in various types of water. The method applies to the following mass concentration ranges: for FIA (20 to 200 micrograms per litre and 200 to 2 000 micrograms per litre for surface water, leachates and waste water) and for CFA (2 to 20 micrograms per litre and 20 to 200 micrograms per litre for drinking water, ground water, surface water, leachates and waste water). The range of application may be changed by varying the operating conditions. Seawater may be analysed by these methods with changes in sensitivity and after adaptation of the reagent and calibration solutions to the salinity of the samples.