GB/T 5686.4-2008 in English

本部分代替ＧＢ／Ｔ７７３０．３—１９９７、ＧＢ／Ｔ５６８６．４—１９９８和ＧＢ／Ｔ８６５４．５—１９８８。　本部分是对ＧＢ／Ｔ５６８６．４—１９９８《锰硅合金化学分析方法　磷钼蓝分光光度法测定磷量》、ＧＢ／Ｔ７７３０．３—１９９７《锰铁化学分析方法磷量的测定》、ＧＢ／Ｔ８６５４．５—１９８８《金属锰化学分析方法　钼蓝光度法测定磷量》的整合修订。本部分规定了用钼蓝分光光度法和碱量滴定法测定锰铁、硅锰合金、氮化锰铁、金属锰和电解锰中磷的含量。本部分适用于锰铁、硅锰合金、氮化锰铁、金属锰中磷含量的测定.本部分与ＧＢ／Ｔ５６８６．４—１９９８、ＧＢ／Ｔ７７３０．３—１９９７、ＧＢ／Ｔ８６５４．５—１９８８比较，其主要变化如下：
———方法适用范围修改为锰铁、锰硅、氮化锰铁、金属锰和电解金属锰；
———金属锰称样量修改为“１．００００ｇ”；
———统一采用聚四氟乙烯烧杯或铂金皿溶解（锰铁、锰硅、氮化锰铁）试样；
———统一了锰铁、锰硅合金、氮化锰铁试样分解的操作；
———对锰硅合金新增二次挥硅这一步骤；
———统一了锰铁、锰硅合金、氮化锰铁、金属锰和电解锰试样还原、显色、比色操作。

Scope

WARNING: Personnel applying this standard should have practical experience in formal laboratory work. This section does not address all possible security issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This part specifies the determination of phosphorus content in ferromanganese, silicon manganese alloy, ferromanganese nitride, metallic manganese and electrolytic manganese by molybdenum blue photometric method and alkali titration method. This part is applicable to the determination of phosphorus content in ferromanganese, manganese-silicon alloy, ferromanganese nitride and metallic manganese. The determination range (mass fraction): 0.003% to 0.650%. Method 1: molybdenum blue photometry, suitable for the determination of silicon content in ferromanganese, manganese-silicon alloy, ferromanganese nitride, and manganese metal, the measurement range (mass fraction) is 0.001-0.60%; method 2: alkaline method, applicable to For the determination of ferromanganese alloy, the determination range (mass fraction) is 0.080% to 0.650%.