Method for analyzing and identifying charcoal type

The invention provides a method for analyzing and identifying charcoal type. The method is high in accuracy and high in repeatability and is capable of accurately identifying the type of charcoal and sorting the charcoal accorded with requirement according to the usage requirement. The invention also provides a charcoal composition for adsorbing heavy metals. The charcoal composition is prepared from charcoal, cross-linked carboxymethyl starch, propylene carbonate, aluminium silicate, cellulose acetate-phthalate and triethylene glycol distearate. The charcoal composition is excellent in heavy metal ion adsorption performance, has an ideal effect of adsorbing various different heavy metal ions, and can be widely applied to purification of water source and soil. 本发明提供种分析鉴别生物炭种类的方法，该方法准确性高、重复性好，可以准确地鉴别生物炭的种类，有利于根据使用需要准确挑选符合要求的生物炭；本发明还提供种用于吸附重金属的生物炭组合物，由生物炭、交联羧甲基淀粉、丙烯碳酸酯、硅酸铝、邻苯二甲酸醋酸纤维素和三乙二醇二硬脂酯制备而成，该生物炭组合物在吸附重金属离子方面性能优良，并且吸附各种不同重金属离子的效果均较为理想，可广泛用于水源和土壤的净化。