高温水解条件下利用离子色谱同时测定煤炭中的卤素（氟、氯、溴、碘）
- 上传人： 上海科学仪器有限公司 |大小：170.52KB|浏览：898次|时间：2018-08-17
-
- 文档简介
- 您可能感兴趣的资料
-
离子色谱法可测定在水溶液中能电离的物质。在酸性溶液中，左旋肉碱表现为阳离子特性，带正电荷，可用阳离子交换色谱
-
世界duchuang的发明ZL产品，可一机多用，开拓一种液相色谱和离子色谱新颖的检测器， 文中有产品简介、
-
毛细管离子色谱有机聚合整体柱的制备及其在测定水硬度中
-
离子色谱仪在2010年版ZG药典中的应用
-
非YZ离子色谱法测定减肥产品中的左旋肉碱
-
离子色谱-柱后衍生紫外检测化妆品中溴酸盐的含量
-
非YZ离子色谱法测定减肥产品中的左旋肉碱
-
离子色谱分离脉冲积分安培检测器测定利培酮中的羟胺
Simultaneousdeterminationofhalogens(F,Cl,Br,andI)incoalusingpyrohydrolysiscombinedwithionchromatography高温水解条件下利用离子色谱同时测定煤炭中的卤素（氟、氯、溴、碘）Monitoringthehalogenlevelsincoalisimportantbecauseoftheireffectsonhumanhealthandtheenvironment.Fewmethodscanbeadoptedtodeterminehalogensincoalsimultaneously.Fcanonlybedeterminedthroughionchromatography(IC)andionselectiveelectrode(ISE),whereasinstrumentalneutronactivationanalysis(INAA)andinductivelycoupledplasma-massspectrometry(ICP-MS)canonlyanalyzeCl,Br,andI[14].Sampledecompositionisacriticalstepinhalogenanalysis.Halogensarevolatileandreadilylostwhenthesampleistreated;furthermore,thereagentsusedforsampledigestionmayinterferewiththedeterminationprocessitself.Toeliminatethesedrawbacks,pyrohydrolysisandmicrowave-inducedcombustion(MIC)havebeenproveneffectiveandreliabledigestionmethodsfordetermininghalogensincoalandoil[29].MICcombinedwithIC,aroutineandclassicanalyticalmethodfordetermininghalogensinwater[10],hasbeensuccessfullyusedtodeterminehalogenssimultaneouslyincoal[4].However,about15%ofChinesecoalhaslessthan2.5lgg_1Brand75%havelessthan3.0lgg_1I.Therefore,thelimitsofdetections(LODs)forBrandI(2.5and3.0lgg_1,respectively)obtainedusingICcoupledwithMICisrelativelyhigh[4].TolowertheLODsofBrandIfurther,thepresentstudyestablishesaquantitativemethodfordeterminingF,Cl,Br,andIincoalusingtheICsystemafterpyrohydrolysis.Thepyrohydrolysisconditions,aswellthetypesandconcentrationsoftheabsorptionsolutionsareoptimized.Themethodisvalidatedusingcertifiedreferencecoals(forF)orspikes(forCl,Br,andI).
标签：
