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      灰分：生物學(xué)名詞。借指生物體里面的無機(jī)成分。如鉀、鈉、鈣、鎂、鐵等，經(jīng)燃燒后殘留為灰。但灰分一定是某種物質(zhì)中的固體部分而不是氣體或液體部分。在高溫時(shí)，發(fā)生一系列物理和化學(xué)變化，最后有機(jī)成分揮發(fā)逸散，而無機(jī)成分(主要是無機(jī)鹽和氧化物)則殘留下來，這些殘留物稱為灰分。

　　Ash: a biological term. It refers to the inorganic components in organisms. Such as potassium, sodium, calcium, magnesium, iron, etc., which remain as ash after combustion. But ash must be the solid part of a substance, not the gas or liquid part. At high temperature, a series of physical and chemical changes occur. Finally, the organic components volatilize and escape, while the inorganic components (mainly inorganic salts and oxides) remain. These residues are called ash.

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