摘要
研究了新试剂4－（H酸偶氮）－1－苯基－3－甲基吡唑啉酮（HAPMP）与铁的显色反应，在pH7的NH4Ac缓冲介质中，CTMAB存在下，HAPMP与Fe（Ⅲ）生成3：1的紫色络合物．λmax=610nm，ε=7．68×104，铁含量在0～10μg/25mL内符合比尔定律，方法用于水样和镁合金中铁的测定．结果满意．
The colour reaction of 4-(H-acidazo)-1-pheyl-3-methylpyazolone (HAPMP) with iron (Ⅲ) was studied. In pH7 NH4 Ac buffer solution and in the presence of CTMAB, HAPMP can reacts with Fe Ⅲ) to form a 3:1 stable complex. The molar absorptivity is 7.68×104L·mol-1·cm at 610nm. Beer’s law is obeyed in the range of 0-10 μg/25mL for Fe(Ⅲ). This method can be applied to the determination of iron in water and alloy with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
1999年第4期14-15,共2页
Metallurgical Analysis
关键词
铁
光度法
显色反应
HAPMP
4-(H-acidazo)-1-pbenyl-3-methylpyazolone, Iron(Ⅲ), Spectrophotometry
