TY - JOUR ID - 10922 TI - Extraction-Fluorimetric Determination of Low Levels of Copper by 1,7- Diaza-15-Crown-5 and Rose Bengal JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Shamsipur, Mojtaba AU - Fathi, Mohammad Reza AD - Department of Chemistry, Faculty of Science, Shiraz University, Shiraz, I.R. IRAN Y1 - 1994 PY - 1994 VL - 13 IS - 2 SP - 91 EP - 96 KW - copper KW - Low level determination KW - 1 KW - 7-diaza-15-crown-5 KW - Rose Bengal KW - Extraction KW - Fluorimetry DO - 10.30492/ijcce.1994.10922 N2 - A simple and sensitive extraction-fluorimetric method for the determination of copper is reported. The 1,7-diaza-15-crown-5-copper-rose Bengal (DA15C5-Cu-RB) ternary complex is quantitatively extracted into chloroform, diluted with ammoniacal acetone and its fluorescence intensity is measured at 570 nm with excitation at 540 nm. A linear calibration graph was obtained over the copper concentration range of 0.05-0.50 mg/mL. The relative standard deviation for 0.35 mg/mL copper is 3.9%. The interfering effect of a large number of diverse ions on the determination of copper was studied. The method was applied to the determination of copper in tap water. UR - https://ijcce.ac.ir/article_10922.html L1 - https://ijcce.ac.ir/article_10922_f302041c89615669981c8334ab40cd63.pdf ER -