耐火陶瓷纤维厂职业有害因素评价与其对工人外周血淋巴细胞染色体损伤的分析-(6120)

《耐火陶瓷纤维厂职业有害因素评价与其对工人外周血淋巴细胞染色体损伤的分析-(6120)》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、华中科技大学硕士学位论文两种方法计数结果存在正相关关系（P＜0.01），Spearman相关系数介于0.621到0.975之间。在吸烟和不吸烟工人中，微核率均随着累积总粉尘暴露量和累积纤维暴露量的上升而上升。在同一累积暴露分组的比较中，吸烟工人的微核率要高于不吸烟工人。结论：耐火陶瓷纤维企业的主要职业有害因素有生产性粉尘、高温和噪声。WHO纤维计数浓度测定结果高于中国纤维计数浓度的结果，两个方法测定结果高度正相关。累积总粉尘暴露量、累积纤维暴露量与工人的微核率存在剂量-效应关系。关键词：暴露评估；耐火陶瓷纤维；职业有害因素；纤维计数；染色体损伤；微核试验；2华中科技大学硕士学位

2、论文Evaluationofoccupationalhazardsinarefractoryceramicfiberfactoryandstudyontheirchromosomaldamageonworkers’peripheralbloodlymphocytesCandidateforMasterDegree:XinLuoSupervisor:WeihongChenABSTRACTObjective:ToinvestigatetheoccupationalhazardsandtheirdistributioncharacteristicsattheworkplaceofaR

3、CFsfactory.Improvethedeterminationmethodsoffibernumberconcentration.ExploreRCFs’chromosomaldamageonworkers’peripheralbloodlymphocytes.Method:Theoccupationalhazardssamplinganddeterminingwereconductedtwotimesayearfrom2012to2014.Theitemsincludedtotaldustconcentration,fibercountconcentration,fre

4、esilicapercent,industrialnoise,wet-bulbglobetemperatureandwindspeed.Therulesoftwomethodswereusedtocountfibersforeachsamplerespectively.Thedifferencesbetweentheresultsoftwomethodswerecomparedusingthesign-ranktest,andthecorrelationbetweenthetwomethods’countingresultswereevaluatedbytheSpearmanr

5、ankcorrelationanalysis.Wecalculatedtheindividualcumulativedustexposurebycollectingallsubjects’occupationalhistoryandhistoricaldustconcentrationoftheRCFsfactory.Cytokinesis-blockmicronucleustestwasusedtomeasureRCFs’chromosomaldamageonperipheralbloodlymphocytes.Result:Dustexposureexistedineach

6、workplaceinthefactory.Nearlyalloftheworkplaces’totaldustconcentrationexceedthenationalstandardlimitmorethantwiceinthesixmonitoringexceptforthepaperlineandlogisticsdepartment.ThefiberconcentrationinVFboardfinishing,VFshapefinishingandModulelinewerehigherthanthelimitsmanytimes.Therewasasignifi

7、cantpositivecorrelationbetweenfibercountconcentrationandtotaldustconcentration,thespearmancorrelationcoefficientis0.6187.3华中科技大学硕士学位论文HighWBGTweremainlyoccurredintheworkplacesneartheheatsource.TheresultsofWHOcountingrulewerehigherthanthoseofChinese