简介：一个新kinetic-spectrophotometric方法为铜(II)的决心被建议。方法在弱酸的氧化上基于铜(II)的催化效果由氢的灿烂的蓝染料(RAWL)过氧化物。铜(II)罐头determinedspectrophotometrically由在λ=626nm测量RAWL的吸收度的减少正在使用thefix时间方法。最佳反应条件如下：pH7.20，缓冲区solutionNaOH-KH_2PO_4，RAWL(200mgL~(-1))5.00mL，H_2O_2(30%)0.50mL，反应温度80℃和反应预定20min。这个方法的线性范围在0μgL~之间(-1)和12μgL~(-1)和察觉的限制是0.011μgL~(-1),在五的相对标准差(RSD)为2和8μgL~复制决心(-1)铜(II)是3.2%并且2.3%分别地。二十个离子不介入铜(II)的决心。方法在淡水样品令人满意地被用于铜(II)的决心(从Lijin的自来水和黄河水，山东，中国)并且海水样品(从华南海)，恢复率是98.0%,102.5%并且96.0%分别地。

简介：Three—layerback—propagationneuralnetworkswereusedforprocessingtheinformationprovidedbytheultravioletspectraoffive—componentmixtures,affectingthesimultaneousdeterminationofthecomponentswithsatisfactoryresults.

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简介：Theapplicationof5'-nitrosalicylfluorone(5'-NSF)-molybdenum(Ⅵ)complexasaspectroscopicprobewasstudied.InthebuffermediumofHOAc-NaOAcat3.45andinthepresenceofPVA124microemulsion,5'-NSF-Mo(Ⅵ)complexcombinesproteinrapidlytoformastablecompound,leadingtoanabsorbancedecreaseat525nmof5'-NSF-Mo(Ⅵ)complex.Accordingtothischange,microdeterminationofproteinhasbeendescribed.Bovineserumalbumin(BSA)couldbedeterminedinthelinearrangeof0—16μg·mL^-1withthedetectionlimitof11ng·mL^-1.Manyaminoacidandmetalionsstudieddonotinterferewiththeassay.Themethodpossesseshighsensitivityaswellashighselectivity.Itcanbeusedtodetermineproteininhumanurineandmilkpowdersuccessfully.Therelativestandarddeviationsareinallinstanceslessthan4.7%,andtherecoveriesarebetween97.6%and106.0%.Moreover,thebindingnumberofBSAwiththecomplex,whichisdeterminedbyusingmolarratio,Rosenthanlgraphicandsloperatiomethods,isingoodagreementwitheachother.

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简介：Theflowinjectionanalysiswasfirstlyusedforstudyingasolid-liquidadsorptionsystem,andthedynamicsprocessintheadsorptionofdyestuffwithregenerablechitinwastracedbyanonlinemethodofflowinjection-spectrophotometry.Experimentalresultsindicatethatthereisalinearizationbetweenthetestedsignalsandtheheightofpeakswithreciprocitycoefficient0.9999byusingtheflowinjection-spectrophotometrysystemtostudythedynamicsadsorptionprocessinsolid-liquidsystem.Themethodshowsagoodstabilityandreproducibility.Itprovidesanewmethodforthestudiesonadsorptiondynamicsinsolid-liquidsystem.

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简介：Inthepasttenyearstheeomplementarytristimulusspeetrophotometryll],eTs,hasseenitsdiverseappli-eations{2一61thoughmostresearehesremaininrelativelysimpesystems,andlessworkhasbeeninvolvinkinetiereaetions.AnattemPthasbeenmadeontheinvestigationofsomecomPlieatedsystemseontainingrareearthsandmeta一acetylchloroPhosPhonaz