摘要
将酸溶试样蒸干 ,铜试剂和三乙醇胺掩蔽分离铁、铝、锰等干扰元素。在pH =1 0 5缓冲溶液中偶氮氯膦I光度法测定中低含量的氧化钙和氧化镁。在最大吸收波长 590nm处钙和镁有相同的摩尔吸光度。测定A1,再加入 3 0 0ml,EGTA Pb溶液使钙络合物颜色消退 ,测吸光度A2 (相当于Mg量 ) ,据 (A1-A2 )从曲线上查钙量。钙 :4～ 80 μg/50ml,镁 4～ 6 0 μg/50ml,符合比尔定律。
By evaporating acid solution samples,then to mask and separat created elements such as iron;aluminium;manganese etc The process is to use the buffer solution that pH=10 5,survey and determine middle and low capacity for CaO and MgO in clay using Chlorophosphonazo I photometic At the maximum absorbing wave 590nm,there is the same molar absorbance of calcium and magnesium After assaying absorbance A 1 to charge the EATA—Pb solution about 3 00ml,and make the calcium complex compound fad away then assaying absorbance A 2(is equal to the amount of magnesium),To check up calcium amount from the curve,(On the basis of A 1 A 2)Ca∶4 80μg/50ml;Mg4 60μg/50ml,accords with Bere Law
出处
《山东陶瓷》
CAS
2000年第1期44-45,共2页
Shandong Ceramics
关键词
偶氯膦Ⅰ
光度法
氧化钙
氧化镁
粘土
硅酸盐
Chlorophosphonazo I Photometic Low capacity Calcium oxide & magnesium oxide
