灰化法是利用高温除去样品中的有机质,剩余的灰分用酸溶解,作为样品待测溶液.该法适用于食品和植物样品等有机物含量多的样品测定,不适用于土壤和矿质样品的测定.大多数金属元素含量分析适用干灰化,但在高温条件下,汞、铅、镉、锡、硒等易挥发损失，不适用.该法主要优点是：能处理较大样品量、操作简单、安全。
利用湿法消解样品，精密度好，回收率高，优于干灰化法。
The wet digestion method is better than the dry ash method for its lower RSD and higher recovery rate.
本方法测定结果与灰化法一致，t检验表明两方法之间无显著性差异。
The t test showed that no difference was found. The present method is convenient, rapid and accurate.
可以用愚浮液进样法取代灰化法处理样品，以火焰原子吸收光谱法测定中草药中的钾。
It is possible to replace the ashing method by suspension sampling method for the determination of potassium in Chinese medicinal herb by flame atomic absorption spectrometry.
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