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为了配合现场生产优质硅钢及深冲08Al钢,近年来我们从化学分析,仪器分析、求系数法等几个方面对测定微量铝的方法进行了研究。在化学法中主要研究了络合缓冲体系一铬天青S(CAS)直接光度法及CAS—溴化十六烷基三甲基铵(CTMAB)胶束增溶分光光度法,分析下限可达0.001％甚至更低。同时为了提高分析速度,对Zn-EDTA,CAS法作了部分改进,使测定酸溶铝(A1s)的时间缩短至15分钟以内。在仪器分析法中,主要研究了电感耦合等离子光源发射光谱法及火焰原子吸收光谱法,测定下限可达0.001％。宣读光
In order to cooperate with on-site production of high-quality silicon steel and deep-drawn 08Al steel, in recent years, we have studied the method of measuring trace aluminum from several aspects such as chemical analysis, instrument analysis and coefficient-seeking method. In the chemical method, the complexation buffer system-chrome azure S (CAS) direct spectrophotometry and CAS-CTMAB micellar solubilization spectrophotometry were studied. The lower limit of analysis 0.001% or even lower. At the same time, in order to improve the speed of analysis, some improvements have been made to the Zn-EDTA and CAS methods to shorten the time of measuring A1s to less than 15 minutes. In the instrumental analysis method, the inductively coupled plasma source emission spectrometry and flame atomic absorption spectrometry are mainly studied, and the lower limit of determination can reach 0.001%. Read the light