Relationship between Elemental Carbon, Total Carbon, and Diesel Particulate Matter in Several Underground Metal/Non-metal Mines
详细信息 查看全文
- 作者：J. D. Noll ; A. D. Bugarski ; L. D. Patts ; S. E. Mischler ; L. McWilliams
- 刊名：Environmental Science & Technology
- 出版年：2007
- 出版时间：February 1, 2007
- 年：2007
- 卷：41
- 期：3
- 页码：710 - 716
- 全文大小：511K
- 年卷期：v.41,no.3(February 1, 2007)
- ISSN：1520-5851
文摘
Elemental carbon (EC) is currently used as a surrogatefor diesel particulate matter (DPM) in underground minessince it can be accurately measured at low concentrationsand diesels are the only source of submicrometer EC inunderground mines. A disadvantage of using EC as asurrogate for DPM is that the fraction of EC in DPM is afunction of various engine parameters and fuel formulations,etc. In order to evaluate how EC predicts DPM in theunderground mining atmosphere, measurements of totalcarbon (TC; representing over 80% of the DPM) and EC weretaken away from potential interferences in four undergroundmetal/non-metal mines during actual production. In acontrolled atmosphere, DPM mass, TC, and EC measurementswere also collected while several different types ofvehicles simulated production with and without differenttypes of control technologies. When diesel particulate filters(DPFs) were not used, both studies showed that ECcould be used to predict DPM mass or TC. The variabilityof the data started to increase at TC concentrationsbelow 230 
g/m3 and was high (>±20%) at TC concentrationsbelow 160 g/m3, probably due to the problem withsampling organic carbon (OC) at these concentrations. Itwas also discovered that when certain DPFs were used, therelationship between DPM and EC changed at lowerDPM concentrations.
g/m3 and was high (>±20%) at TC concentrationsbelow 160 g/m3, probably due to the problem withsampling organic carbon (OC) at these concentrations. Itwas also discovered that when certain DPFs were used, therelationship between DPM and EC changed at lowerDPM concentrations.