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北京化工研究院三室选用铝-铬天青S-溴化十六烷基三甲基铵(阳离子表面活性剂)-乙醇体系(AlCAS-CTMAB-C_2H_5OH体系)测定聚丙烯(PP)、聚乙烯(PE)树脂中微量铝的方法。为了加快反应速度、简化操作步骤,把CAS、CTMAB、C_2H_5OH配成混合显色剂,获得较满意的结果。采用这种方法测定微量铝具有如下优点。最大吸收波长在650mμ,比Al-CAS
Beijing Institute of Chemical Technology three-compartment selection of aluminum - chrome azure S-Cetyltrimethylammonium bromide (cationic surfactant) - ethanol system (AlCAS-CTMAB-C_2H_5OH system) Determination of polypropylene (PP), polyethylene PE) resin in the method of trace aluminum. In order to speed up the reaction speed and simplify the operation steps, CAS, CTMAB and C_2H_5OH were mixed into a mixed color reagent to obtain more satisfactory results. Determination of trace aluminum using this method has the following advantages. The maximum absorption wavelength of 650mμ, than the Al-CAS