標準編號:	GB/T 223.50-1994
中文名稱:	鋼鐵及合金化學分析方法 苯基熒光酮-溴化十六烷基三甲基胺直接光度法測定錫量
英文名稱:	Methods for chemical analysis of iron, steel and alloy The phenylfuorone-CTMAB direct photometric method for the determination of tin content
行業分類:	GB    國家標準
發布機構:	國家質量監督檢驗檢疫總局
發布日期:	1994-9-26
實施日期:	1995-6-1
標準狀態:	valid
替代舊標準:	GB 223.50-1985 鋼鐵及合金化學分析方法 苯芴銅-溴化十六烷基三甲基胺直接光度法測定錫量
翻譯語言:	英文
文件格式:	PDF
中文字符數:	4000 字
翻譯價格(元):	280.0
交付時間:	付款后 1 個工作日

1 Subject Content and Application Scope This Standard specifies Phenylfluorone-CTMAB direct photomctric method for determination of tin content. This Standard is applicable to determination of tin in pig iron, carbon steel and low alloyed steel. The tin content range by determination is as: 0.0050%~0.20%. 2 Principle In medium of diluted sulfuric acid, tin (IV) with phenylfluorone and CTMAB forms multiads, showing stable orange red, and measure the absorbance with spectrophotometer at a wave length of 536nm. There is no effect when the content of wolfram, molybdenum and titanium in the developing solution shall respectively be less than 10μg, the content of niobium shall be less than 5μg, and the content of tantalum shall be less than μg.