In analytical chemistry, ashing or ash content determination is the process of mineralization by complete combustion for preconcentration of trace substances prior to a chemical analysis, [1] such as chromatography, or optical analysis, such as spectroscopy.

The “ash content” is a measure of the total amount of minerals present within a food, whereas the “mineral content” is a measure of the amount of specific inorganic components present within a food, such as Ca, Na, K and Cl. Determination of the ash and mineral content of foods is important for a number of reasons:

ash content, and organic matter in peats and other organic soils, suc. d equipment. This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appro. ri. te safety and heal.

The ash content is a measure of inorganic impurities in the fuel (typically sand, nickel, aluminium, silicon, sodium, and vanadium), which can cause different kinds of problems. Typically the ash value is in the range of 0.03%–0.07% by mass.

英文: The effects of coal types, temperature and ash content in coal on the char gasification with CO2 were examined. 中文: 用随机孔模型模拟北宿煤反应速率与碳转化率的关系曲线，与未反应芯缩核模型和混合模型模拟结果比较。

Ash is the solid remnants of fires. [1] Specifically, ash refers to all non-aqueous, non-gaseous residues that remain after something burns.In analytical chemistry, to analyse the mineral and metal content of chemical samples, ash is the non-gaseous, non-liquid residue after complete combustion.. Ashes as the end product of incomplete combustion are mostly mineral, but usually still contain an ...

An Ash test is used to determine if a material is filled. The test will identify the total filler content. It cannot identify individual percentages in multi-filled materials without additional test procedures being performed.

2017年6月21日 · Determine the ash content of a variety of food products by the dry ashing technique and express on a wet weight basis and dry weight basis. Organic materials are incinerated at elevated temperatures (550 °C) in a muffle furnace, and inorganic matter (ash) remains. Ash content is measured by weight of inorganic matter remaining.

3.1 The ash content of the sample may consist of: (1) various residues from chemicals used in its manufacture, (2) metallic matter from piping and machinery, (3) mineral matter in the pulp from which the paper was made, and (4) filling, coating, pigmenting and/or other added materials.

2016年3月12日 · ash content 英[æʃ ˈkɔntent]美[æʃ ˈkɑnˌtɛnt] 词典 含灰量 网络 灰分纸张; 灰分; 灰含量 1 Standard test method for percent ash content of engine coolants 发动机冷却剂的灰分百分比含量的标准试验方法 2 the ash content increased with the screen meshes, P 105 being more than 35% of whole pulp.