单一酸代替混酸二苯碳酰二肼光度法测定水中六价铬方法的改进

:2009-04-01:(1968-),,,,:(,453000):6,,,:;;;;:X83:A:1673-9655(2009)05-0077-02,[1],,(GB7476-87),,[2],,1111GR,ARGB7476-87:GR,AR,11:vis-723,11250ml,1g/mL0012001501100210041006100810010100ml,50ml,015ml015ml(1ml),,2ml,,510min(3040min),540nm,30mm,,11Cr6+(g)AAAAAA000000001200100901010010070100801011010100150010220102201021010220102501023110001047010510104401045010490104621000109301096010910109301097010944100011870118901187011850119401183610001276012810128101278012910127881000137101374013750137101379013721010014640147201470014620147401454a=-91910-5a=91410-4a=-21210-3a=-61410-4a=11910-3a=91110-4b=010464b=010469b=010472b=010464b=010474b=010458r=019999r=019999r=019999r=019999r=019999r=0199981,,,,,113,,4,,22,5%,114772009,28(5):77-78CN53-1205/XISSN1673-9655,,,3212345scv(%)1010450104501045010450104501045001010460104701047010470104701046841510-401961010470104801048010480104801047841510-401941010460104601045010460104501045651510-41122014240142301423014230142301423241510-401102014240142301423014230142301423241510-401102014280142701427014270142701427241510-401102014150141401414014140141401414241510-401113(ml)ACr6+(g)Cr6+(g)ACr6+(g)(%)1250021000109421041021250021000109221001001250021000109611989912500210001085118492225010601132210001155313310022501059112921000115231291002250106111252100011553123992250106311362100011483121923,,,115[3],,,,,,5,,,,3,,,2,,,,,,,:[1],,,1[J]1,2006,25(4)1[2]1[J]1,2006,18(2)1[3]1[J]1,1996,14(2)1ImprovementofDiphenylcarbohydrazideSpectrophotometricMethodusedtoDetermineHexavalentChromiumintheWaterSUWen-hai(XinxiangEnvironmentalMonitoringStation,XinxiangHenan453000China)Abstract:Theimpactswithsixkindsofacidsystemondiphenylcarbohydrazidespectrophotometricmethodusedtodeterminehexavalentchromiuminthewaterarecompared.Theresultsindicatethathydrochloricacidsystemissimpletooperatewithrapidspeed,whichcanguaranteethehighprecisionandaccuracy.Keywords:diphenylcarbohydrazide;hexavalentchromium;determination;method;improvement87285200910