淮北师范大学学报(自然科学版)
淮北師範大學學報(自然科學版)
회북사범대학학보(자연과학판)
Journal of Huaibei Normal University (Natural Science)
2015年
3期
30-34
,共5页
分光光度法%铋(Ⅲ)%双波长%甲基绿%中性红
分光光度法%鉍(Ⅲ)%雙波長%甲基綠%中性紅
분광광도법%필(Ⅲ)%쌍파장%갑기록%중성홍
spectrophotometry%bismuth(III)%dual wavelength%methyl green%neutral red
在酸性条件下,Bi(Ⅲ)可以定量置换出Cu(Ⅱ)-EDTA中的Cu(Ⅱ),Cu(Ⅱ)对过氧化氢同时氧化甲基绿和中性红的褪色反应效果具有催化作用.通过测量535 nm和627 nm波长下的吸光度,建立双波长催化动力学分光光度法间接测定药物中铋的新方法.实验所得的最佳条件下进行实验,Bi(Ⅲ)在0.010~2.20μg/25 mL范围与ΔA呈良好的线性关系,检出限为8.9×10-9 g/mL.用于药物中铋的测定,结果满意.
在痠性條件下,Bi(Ⅲ)可以定量置換齣Cu(Ⅱ)-EDTA中的Cu(Ⅱ),Cu(Ⅱ)對過氧化氫同時氧化甲基綠和中性紅的褪色反應效果具有催化作用.通過測量535 nm和627 nm波長下的吸光度,建立雙波長催化動力學分光光度法間接測定藥物中鉍的新方法.實驗所得的最佳條件下進行實驗,Bi(Ⅲ)在0.010~2.20μg/25 mL範圍與ΔA呈良好的線性關繫,檢齣限為8.9×10-9 g/mL.用于藥物中鉍的測定,結果滿意.
재산성조건하,Bi(Ⅲ)가이정량치환출Cu(Ⅱ)-EDTA중적Cu(Ⅱ),Cu(Ⅱ)대과양화경동시양화갑기록화중성홍적퇴색반응효과구유최화작용.통과측량535 nm화627 nm파장하적흡광도,건립쌍파장최화동역학분광광도법간접측정약물중필적신방법.실험소득적최가조건하진행실험,Bi(Ⅲ)재0.010~2.20μg/25 mL범위여ΔA정량호적선성관계,검출한위8.9×10-9 g/mL.용우약물중필적측정,결과만의.
It was found that Cu(II) had catalytic decolorization reaction of methyl green and neutral red by hydrogen peroxide in acidic condition(sulfuric acid system),and Bi(III) can displace Cu(II)in EDTA-Cu (II). By measuring the absorbance at 535 nm and 627 nm wavelength,a new method for dual-wavelength catalytic kinetic spectrophotometry indirect determination of Bi(III) has been developed.The linear range was 0.100~2.20 μg/25mL,and the detection limit was 8.9 ×10-9 g/mL.It has been successfully applied to the determination of bismuth in medicine.