用硝酸铵作氧化剂测定代森锰锌的锰含量  

Determination of Manganese in Mancozeb Applied Ammonium Nitrate as Oxidant

作　　者：官青 赖丰英 

机构地区：[1]广西壮族自治区化工产品质量监督检验站,广西南宁530001

出　　处：《化工技术与开发》2008年第8期36-37,15,共3页Technology & Development of Chemical Industry

摘　　要：根据在磷酸介质中，于220～240℃温度下，Mn^2＋可被硝酸铵定量氧化至Mn^3＋的原理，将代森锰锌试样经硝酸硝化后，以硝酸铵作氧化剂把Mn^3＋氧化至Mn^3＋，再用硫酸亚铁铵标准溶液滴定生成的Mn^3＋，测出锰的质量分数。方法简便、快捷、重现性好、准确度高。According to the principle that Mn^2＋ could be oxide to Mn^3＋ by ammonium nitrate in phosphoric acid medium under 220--240℃, the mancozebsample was nitrified with nitric acid, and then the Mn^2＋ in rnancozeb was oxided to Mn^3＋ with ammonium nitrate. The generated Mn^3＋ was titrated with ammonium ferrous sulfate standard solution to measure mass fraction of manganese. This method was convenient, fast, and had good reproducibility and high accuracy.

关 键 词：硝酸铵 氧化剂 代森锰锌 含量 

分 类 号：O655.26[理学—分析化学]