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 COAL INDUSTRY TEACHERS COLLEGE(NATURAL SCIENCE)
2014年
1期
30-33
,共4页
铜%双指示剂%催化光度法%甲基橙%亮绿%中药材
銅%雙指示劑%催化光度法%甲基橙%亮綠%中藥材
동%쌍지시제%최화광도법%갑기등%량록%중약재
copper%dual-indicator%catalytic spectrophotometry%methyl orange%brilliant green%Chinese herb medicines
文章研究在硫酸介质中,利用铜催化过氧化氢氧化甲基橙和亮绿褪色的反应体系.探讨该褪色指示反应的最佳实验条件,在此基础上建立高灵敏度测定痕量铜的动力学分析新方法.通过对该反应催化体系和非催化体系吸光度的测定,确定该体系的最大吸收峰位于波长510 nm和640 nm处.工作曲线的线性范围:0.100~2.00μg/25mL.检出限:3.64×10-9 g/mL,相对标准偏差:1.2%.本方法体系稳定,灵敏度高,选择性好,用于亳州道地药材中痕量铜的测定,结果较为满意.
文章研究在硫痠介質中,利用銅催化過氧化氫氧化甲基橙和亮綠褪色的反應體繫.探討該褪色指示反應的最佳實驗條件,在此基礎上建立高靈敏度測定痕量銅的動力學分析新方法.通過對該反應催化體繫和非催化體繫吸光度的測定,確定該體繫的最大吸收峰位于波長510 nm和640 nm處.工作麯線的線性範圍:0.100~2.00μg/25mL.檢齣限:3.64×10-9 g/mL,相對標準偏差:1.2%.本方法體繫穩定,靈敏度高,選擇性好,用于亳州道地藥材中痕量銅的測定,結果較為滿意.
문장연구재류산개질중,이용동최화과양화경양화갑기등화량록퇴색적반응체계.탐토해퇴색지시반응적최가실험조건,재차기출상건립고령민도측정흔량동적동역학분석신방법.통과대해반응최화체계화비최화체계흡광도적측정,학정해체계적최대흡수봉위우파장510 nm화640 nm처.공작곡선적선성범위:0.100~2.00μg/25mL.검출한:3.64×10-9 g/mL,상대표준편차:1.2%.본방법체계은정,령민도고,선택성호,용우박주도지약재중흔량동적측정,결과교위만의.
This thesis studies on a system of oxidation fading reaction among hydrogen peroxide,methyl or-ange and brilliant green in the sulfuric acid medium. Under the best experimental conditions of the reaction discussed,a new kinetic analysis for trace copper with high sensitivity is established. A result shows that the maximum absorption peak lies at 510 nm and 640 nm respectively by means of absorbance deteriminaton in the catalytic and non-catalytic systems. The linear range of the working curve of this method is 0.100~ 2.00μg/25mL. The detection limit is 3.64 × 10-9g/mL. The relative standard deviation is 1.2%. With highly stabili-ty,sensitivity and selectivity,the determination of trace copper can apply to genuine regional Chinese herb medicines in Bozhou,with satisfactory results.