接种稀释水的空白对BOD-5测定的影响

接种稀释水的空白对BOD-5测定的影响作者:谢美云,女,1964年出生,1986年毕业于福州大学,工程师。接种稀释水的空白对BOD5测定的影响谢美云(福建省三明环境监测站,福建三明365000)摘要从接种液种类、空白BOD5大小、接种液最佳添加范围等方面对BOD5测定进行探讨,提出以接纳工业废水的河水作为最佳接种液,雨季时以土壤浸取液更适合。探讨了接种液空白值对BOD5标液和工业废水的影响。结果表明,河水空白应控制在0.1～0.8mg/L,土壤浸取液空白控制在0.01～0.10mg/L为宜。关键词接种稀释水BOD5测定InfluencesofinoculateddilutingwateronBOD5determinationXieMeiyun,SanmingEnvironmentalMonitoringStation,FujianSanming365000Abstracts:Effectsoftheinoculatedsolutiontype,theBOD5blankandtheinoculatedsolutionvolumeonBOD5determinationwasstudied.Theresultsshowedthattheriverwater,whichtookinindustrialwastewater,wassuitableinoculatedsolutioningeneral,whilethesoilextractionwasmuchbetterinrainingtime.TheinfluencesofinoculatedsolutionblankontheBOD5standardsolutionandindustrialwastewaterwerestudiedalso.Thedataobtainedindicatedthattheblankofriverwaterandsoilextractionshouldbecontrolledwithin0.1～0.8mg/Land0.01～0.10mg/Lrespectively.Keywords:InoculateddilutingwaterBOD5Determination在污水各项指标中,生化需氧量(BOD5)是最通用的指标之一,目前主要采用稀释法测定。对于某些地面水及大多数工业废水,因含较多有机物,