碳酸钡中氧化铝的测定方法探讨  

Discussion on determination methods of alumina in barium carbonate

作　　者：尹书成[1] 郭兰疃[1] 

机构地区：[1]河北辛集化工集团有限责任公司,河北辛集052360

出　　处：《无机盐工业》2009年第9期54-55,共2页Inorganic Chemicals Industry

摘　　要：近年来,由于世界钡盐市场竞争激烈,国外用户对碳酸钡质量不断提出新的指标要求,许多用户均提出控制碳酸钡中氧化铝含量的要求(注:国家标准无此项要求)。为满足市场需要,提高产品的竞争力,对碳酸钡中氧化铝的试验方法进行了有益探讨。经查阅资料,测定铝的主要方法有铬天青S法和铝试剂法。对两种方法进行试验对照,结果表明:铬天青S法试验误差大,结果不准确;铝试剂法检测快速、准确,方法重现性好,满足日常检测要求。In recent years,due to the intense competition of world barium salt market, new requests for the quality of barium carbonate are being proposed continually by overseas users, and many of them all demand to control alumina content in barium carbonate （ note ： National Standards do not have this request ）. In order to satisfy the market demand and to en- hance product＇s competitiveness, some beneficial discussion on determination methods of alumina in barium carbonate was made. By access to information,determination methods of alumina are mainly including chrome azurol S method and alumi- non method. Experimental comparison results indicated：experimental error of the former method is big and result is inaccu- rate ; but the latter one is fast, accurate and has good reproducibility. Therefore, it could meet the requirements of routine tes- ting.

关 键 词：氧化铝 碳酸钡 铬天青S法 铝试剂法 

分 类 号：TQ132.35[化学工程—无机化工]