ferric cyanide method

例句：

1. 1.The ferric cyanide method is a widely used technique for detecting trace metals in water samples.
   铁氰化物法是一种广泛应用于检测水样中微量金属的技术。
2. 2. In this study, the ferric cyanide method was used to analyze the chemical composition of the soil samples.
   在这项研究中，铁氰化物法被用来分析土壤样本的化学成分。
3. 3.The ferric cyanide method has proven to be an effective way to remove heavy metals from wastewater.
   铁氰化物法已被证明是一种有效的从废水中去除重金属的方法。