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To Furfural 7 - amino -8 hydroxyquinoline -5-- acid as an agent for catalytic fluorimetric determination of trace manganese (Ⅱ)

The amount of manganese (I) exist, 385 ~ tm at the peak of the fluorescence increase of about 8 times. Experiments show that the Mn (I) and the formation of training sets 7N8Q5S material, absorption spectrum and network units on the reagent material contrast △ = 50nm. DO network attack Taiwan Matter Mn (I), its oxidation to Mn (I),[link widoczny dla zalogowanych], the literature [5,6] have done a very detailed experiments to prove the property of dissolved oxygen in the network station Mn (I) oxide for the Mn (I). Formed F7N8Q5S-Mn (I) instability, the rapid decomposition of Mn (I) and fluorescent products. 4 Yu, t and Britain to a 7-amino -8 Furfural hydroxy wow the amount of manganese complexes must Qu (1) 417 Shi Huiming, Don crossing. Analytical Chemistry, 1992,20 (9) t1043 ~ 1047LuquedtCastroMD, SilvaM, ValcarcelM-Analyse'19B4, 109:1375 ~ 1381 sails. Synthesis of new organic reagents. Beijing: Ocean Press, 1985:203 Ru-Qin Yu. Had pigeon Ming,[link widoczny dla zalogowanych], Lin Runguo. Chemical Luo reported 1983,41 (10): 960 ~ 965 Yu Ying,[link widoczny dla zalogowanych], Hong Zhaohui, Huang Jian-feng. Analytical Chemistry,[link widoczny dla zalogowanych], 1994,22 (6): 543 ~ 547Catalytic-FluorimetricDeterminationofTraceManganese (I) BasedonItsCatalysisforFurfural-7-Amino-8-Hydroxy-quinoline-5-SulfonicAcidYuYing '(DepartmantChemistry.SouthClffnaNormalUniversity.Guangzhou510631) HongChaohui · WangRuiqiong · Huangymnfeng' (1 ~ ritureo, Appl ~ dChemistry, NanchangU, dv,, 'sity, Nanchang330047) AbstractThereagent. One of a 7 amino furfural a 8-hydroxy-quinoline-5-sulfonicacid · isunstableinbasemedium, andMn (I) cancatalyzegreatlythereaction. Basedonit, amethodforthecatalysis-fluorescencedeterminationofMn (I) atk = 322/382nmwasestablished. TheoptimumconditionsfordeterminationofMn (1) were: 0.03furfural a 7 to 8 for a one amino hydrox. yquinoline a 5 a sulfonicacidsolution3.0mL, pH10.4NHlc1/NHaHiOsolution5.0mLwereaddedin25mLmeasuredsolotionandheatedati00 ℃ for25min. AbetterlinearcurvewasobtainedovertherangeofO ~ 6Opg/LandthedetectionlimitforMn (I) is2.6 # g / L. TheproposedmethodhaeenappliedtodetermineMn (1) inwaterandaluminumalloysam-ples. Themechanismandkineticequationhavealsoheendiscussed. One of a 7 amino KeywordsFurfurel a 8 · bydroxy-quinoline-5 a sulfonic. catalytic-fluorimetry. man-ganese (1) (Re, ely death d5May1997 · accept death d2July1997)
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