The aluminium complex compound of aluminium trichloride and flavonoid is yellow.In this paper,we determined the content of the total flavone by using spectrophotometer.50% ethanol was used to separate flavonoid in the...The aluminium complex compound of aluminium trichloride and flavonoid is yellow.In this paper,we determined the content of the total flavone by using spectrophotometer.50% ethanol was used to separate flavonoid in the cydonia oblonga.Mill in the experiment The results show that lixiviate amonut of flavone is the most and reappearance of results is good when we use 50% ethanol with 7h of leaching time.展开更多
本文研究了在聚乙烯醇—乳化剂OP混合增溶剂存在下,Co2+—PAR—曙红离子缔合物的显色反应,提出了一种测定Co2+的新方法,并将其反应用于悬构子中痕量钴的测定,离子缔合物的最大吸收波长为515 nm,摩尔吸光系数ε=8.5×104L/m o l.cm....本文研究了在聚乙烯醇—乳化剂OP混合增溶剂存在下,Co2+—PAR—曙红离子缔合物的显色反应,提出了一种测定Co2+的新方法,并将其反应用于悬构子中痕量钴的测定,离子缔合物的最大吸收波长为515 nm,摩尔吸光系数ε=8.5×104L/m o l.cm.在测定条件下,钴含量在0μg^20μg/25 mL范围内成线性关系,符合比耳定律.展开更多
文摘The aluminium complex compound of aluminium trichloride and flavonoid is yellow.In this paper,we determined the content of the total flavone by using spectrophotometer.50% ethanol was used to separate flavonoid in the cydonia oblonga.Mill in the experiment The results show that lixiviate amonut of flavone is the most and reappearance of results is good when we use 50% ethanol with 7h of leaching time.
文摘本文研究了在聚乙烯醇—乳化剂OP混合增溶剂存在下,Co2+—PAR—曙红离子缔合物的显色反应,提出了一种测定Co2+的新方法,并将其反应用于悬构子中痕量钴的测定,离子缔合物的最大吸收波长为515 nm,摩尔吸光系数ε=8.5×104L/m o l.cm.在测定条件下,钴含量在0μg^20μg/25 mL范围内成线性关系,符合比耳定律.
