固定污染源排气中H_2S的便携式气相色谱测定法.docVIP

固定污染源排气中H_2S的便携式气相色谱测定法 固定污染源排气中H_2S的便携式气相色谱 测定法 安徽农业科学,JournalofAnhuiAgn.Sci.2010,38(15):8133—8134责任编辑王淼责任校对卢瑶 固定污染源排气中H2S的便携式气相色谱测定法 周贤波,周贤杰(重庆市环境监测中心,重庆401147) 摘要[目的]寻找一种固定污染源排气中H,s的快速准确测定方法.[方法]通过确定色谱仪最佳测试参数,建立标准曲线,进行准确 度和精密度试验,SO,干扰试验和现场采样试验分析了便携式气相色谱法测定固定污染源排气中H,s的适用性与优势.[结果]便携式 气相色谱法的标准曲线回归方程为:Y=91.771+31.796;该法的精密度好,准确度高.该法的H,S测定上限为152mg/m,测定下限为 0.152mg/m.当C450C时,该法的HS测试相对误差45.O%.受生产工艺影响,S0和HS浓度在克劳斯炉出口处度最大,以 后随着处理的加强,浓度逐渐减小.各测点C:C均小于50,结合室内干扰试验结果可以判定,便携式气相色谱法测定各工段H,s浓 度时,受SO,影响较小.l结论I该法快速可行,适用于野外应急监测HS的测定.. 关键词固定污染源;SO,;H,S;便携式气相色谱法 中图分类号x131.1文献标识码A文章编号 o517—6611(2010)15—08133—02 DeterminatiOnOfH,SinExhaustedGasofStationaryPollutionSourcebyUsingPortableGC ZHOUXian_boetal(ChongqingEnvironmentalMonitoringCenter,Chongqing401147) Abstract[Objective]ThepurposewastofindarapidandaccuratedetectionmethodforH2sinexhaustedgasofstationarypollution source.[Method]Throughascertainingtheoptimumtestparametersofchromatographandestablishingstandardcurve,perfomlingaccuracy andprecisiontest,SO2disturbanceandspotsamplingexperiments,theapplicabilityandadvantageofportableGCfordetectingH2Sinexhaus— tedgasofstationary”pollutionsourcewereanalyzed.[Result]TheregressionequationofstandardcurveofportableGCmethodwasY=91.771 +31.796.Thismethodhadgoodprecisionandhighaccuracy.TheupperdetectionlimitofthismethodfnrH2Swas152rag/Inanditslower detectionlimitwas0.152111g/m.WhentheconditionisCSO,?50CH,S,therelativeerrorofthismethodfordetectingHSwasequaltoor lessthan5.0%.Affectedbyproductiontechnology.theeonen.ofSO,andH,SwerehighestatoutletofKlausfurnace:afterthatastreatment wasintensified,theirconcn.werereducedgradually.TheCSO2:CH2Svalueofeachdetectionpointwaslowerthan50,itcouldbeconcluded aftertakingresultsfromindoordisturbanceexperimentintoaccountthatwhe ntheH2Sconcn.ofvariousprocessingsegmentsweredetectedby usingportableGCmethod,itwaslessaffectedbySO2.[Conclusion]TI1ismet hodwasrapidandfieasible,suitablefnrH2Sdetectioninwild emergencemonitoring. KeywordsStationaPypollut