摘要
合成了胡椒醛与安替比林的缩合产物─—二安替比林基-(3,4-亚甲二氧基)苯基甲烷(DADMPM),研究了DADMPM与钒(Ⅴ)的显色反应。于磷酸介质中,在Mn(Ⅱ)和吐温-40的存在下,钒(Ⅴ)与DADMPM反应生成橙黄色化合物,最大吸收波长λmax为47Omm,摩尔吸光系数ε为3.21×105L·mol-1·cm-1和2.57×10 ̄5L·mol-1·cm-1,钒(Ⅴ)的量在0.2~3.Oμg/25mL及3.0~9.Oμg/25mL间符合比尔定律。可用于中草药中微量钒(Ⅴ)的测定。
This paper reports the synthesis of diantipyryl(3,4-dioxymethenyl)phenyl-methane(DADMPM),the condensation product of piperonal and antipyrine.The colour reaction of DADMPM with Ⅴ(Ⅴ)was studied.In the presence of Mn(Ⅱ)and Tween-40,DADMPM reacts with Ⅴ(Ⅴ)to form an orange-yellow product with a molar absorptivity of 3.21×105L·mol-1·cm-1 and 2.57×105L·mol-1·cm-1 at 47Onm.Beer's law is obeyed in the range of 0.2~3.0μg/25mL and 3.0~9.0μg/25mL.The method was applied to determine trace Ⅴ(Ⅴ)in Chinese herbal medicine.
出处
《化学试剂》
CAS
CSCD
北大核心
1996年第4期227-228,242,共3页
Chemical Reagents
关键词
二安替比林基
苯基甲烷
钒
分光光度法
diantipyryl-(3,4)-dioxymethenyl)-phenylmethane,vanadium(Ⅴ),spectrophotometric determination