光谱实验室
光譜實驗室
광보실험실
CHINESE JOURNAL OF SPECTROSCOPY LABORATORY
2010年
2期
607-609
,共3页
Cu(Ⅱ)%7-碘-8-羟基喹啉-5-磺酸%分光光度法
Cu(Ⅱ)%7-碘-8-羥基喹啉-5-磺痠%分光光度法
Cu(Ⅱ)%7-전-8-간기규람-5-광산%분광광도법
Cu(Ⅱ)%7-Iodo-8-Hydroxyquinoline-5-Sulfonic Acid%Spectrophotometry
研究了7-碘-8-羟基喹啉-5-磺酸与铜(Ⅱ)的显色反应.在pH=5.0 Clark-Lubs缓冲介质中,铜(Ⅱ)与7-碘-8-羟基喹啉-5-磺酸形成黄色络合物.其最大吸收波长位于380nm处,表观摩尔吸光系数为7.35×10~3L·mol~(-1)·cm~(-1),铜(Ⅱ)的含量在0.15-4.5μg/mL范围内符合比耳定律,线性回归方程为A=0.1122z(μg/mL)+0.0079,相关系数0.9999.方法用于合成水样中微量铜的测定,回收率为99%-110%,结果满意.
研究瞭7-碘-8-羥基喹啉-5-磺痠與銅(Ⅱ)的顯色反應.在pH=5.0 Clark-Lubs緩遲介質中,銅(Ⅱ)與7-碘-8-羥基喹啉-5-磺痠形成黃色絡閤物.其最大吸收波長位于380nm處,錶觀摩爾吸光繫數為7.35×10~3L·mol~(-1)·cm~(-1),銅(Ⅱ)的含量在0.15-4.5μg/mL範圍內符閤比耳定律,線性迴歸方程為A=0.1122z(μg/mL)+0.0079,相關繫數0.9999.方法用于閤成水樣中微量銅的測定,迴收率為99%-110%,結果滿意.
연구료7-전-8-간기규람-5-광산여동(Ⅱ)적현색반응.재pH=5.0 Clark-Lubs완충개질중,동(Ⅱ)여7-전-8-간기규람-5-광산형성황색락합물.기최대흡수파장위우380nm처,표관마이흡광계수위7.35×10~3L·mol~(-1)·cm~(-1),동(Ⅱ)적함량재0.15-4.5μg/mL범위내부합비이정률,선성회귀방정위A=0.1122z(μg/mL)+0.0079,상관계수0.9999.방법용우합성수양중미량동적측정,회수솔위99%-110%,결과만의.
The color reaction of Cu (Ⅱ) with 7-iodo-8-hydroxyquinoline-5-sulfonic acid takes palce and forms a complex in pH = 5.0 Clark-Lubs buffer solution.The apparent molar absorptivity of this chelate is 7.35×10~3L·mol~(-1)·cm~(-1) at 380nm.Beer's law is obeyed in the range of 0.15-4.5μg/mL for Cu (Ⅱ).The linear equation is A = 0.0079 + 0.1122x (μg/mL), r = 0.9999.The method is applied to the determination of Cu(Ⅱ) in water with satisfactory results.
