摘要
报道了一种用差示分光光度法中的标准加入法快速测定水泥中 Si O2 含量的方法。利用硅与钼酸铵生成硅钼黄 ,在酸性介质中和抗坏血酸还原剂作用生成硅钼兰 ,其最大吸收波长为 760nm,ε=2 .0 0× 1 0 4L/ (mol·cm)。
The paper reports an application of standard addit io n method in Differential spectrophotometric for the fast determination of SiO 2 in cement,based on the reaction of silicon with ammonlum molybdate to form the molybdosiliscate yellow,Which is reduced by ascorbic acid to form molybdenum blu e.The maximum absoprtion wave is at 760nm ,the molar absorptivity is 2.00×10 4 L/(mol·cm).
出处
《延安大学学报（自然科学版）》
2003年第3期60-61,共2页
Journal of Yan'an University：Natural Science Edition
关键词
差示分先先度法中的标准加入法
硅钼黄
硅钼蓝
抗坏血酸
molybdosilicate yellow
molybdenum blue
ascorbic aci d
standard addition method in differential spectrophotometric.
