ASTM D6331-2013 red 6250 Standard Test Method for Determination of Mass Concentration of Particulate Matter from Stationary Sources at Low Concentrations (Manual Gravimetric Method.pdf
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1、Designation: D6331 98 (Reapproved 2005)D6331 13Standard Test Method forDetermination of Mass Concentration of Particulate Matterfrom Stationary Sources at Low Concentrations (ManualGravimetric Method)1This standard is issued under the fixed designation D6331; the number immediately following the des
2、ignation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method2 covers a me
3、thod for the measurement of particulate matter (dust) concentration in emission gases in theconcentrations below 20 mg/m3 standard conditions, with special emphasis around 5 mg/m3.1.2 To meet the requirements of this test method, the particulate sample is weighed to a specified level of accuracy.At
4、low dustconcentrations, this is achieved by:1.2.1 Exercising extreme care in weighing,1.2.2 Extending the sampling time at conventional sampling rates, or1.2.3 Sampling at higher rates at conventional sampling times (high-volume sampling).1.3 This test method differs from Test Method D3685/D3685M by
5、 requiring the mass measurement of filter blanks, specifyingweighing procedures, and requiring monitoring of the flue gas flow variability over the testing period. It requires that the particulatematter collected on the sample filter have a mass at least five times a positive mass difference on the
6、filter blank. High volumesampling techniques or an extension of the sampling time may be employed to satisfy this requirement.1.4 This test method may be used for calibration of automated monitoring systems (AMS). If the emission gas contains unstable,reactive, or semi-volatile substances, the measu
7、rement will depend on the filtration temperature, and in-stack methods may be moreapplicable than out-stack methods for the calibration of automated monitoring systems.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityo
8、f the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:3D1193 Specification for Reagent WaterD1356 Terminology Relating to Sampling and Analysis of AtmospheresD29
9、86 Practice for Evaluation of Air Assay Media by the Monodisperse DOP (Dioctyl Phthalate) Smoke Test (Withdrawn2004)4D3154 Test Method for Average Velocity in a Duct (Pitot Tube Method)D3631 Test Methods for Measuring Surface Atmospheric PressureD3670 Guide for Determination of Precision and Bias of
10、 Methods of Committee D22D3685/D3685M Test Methods for Sampling and Determination of Particulate Matter in Stack GasesD3796 Practice for Calibration of Type S Pitot TubesE1 Specification for ASTM Liquid-in-Glass ThermometersE2251 Specification for Liquid-in-Glass ASTM Thermometers with Low-Hazard Pr
11、ecision Liquids1 This test method is under the jurisdiction of ASTM Committee D22 on Air Quality and is the direct responsibility of Subcommittee D22.03 on Ambient Atmospheresand Source Emissions.Current edition approved March 1, 2005April 1, 2013. Published May 2005April 2013. Originally approved i
12、n 1998. Last previous edition approved in 19982005 asD6331 - 98.D6331 - 98(2005). DOI: 10.1520/D6331-98R05.10.1520/D6331-13.2 This test method is based on ISO/CD 12141.3, “Stationary Source EmissionsDetermination of Mass Concentration of Particulate Matter (Dust) at LowConcentrationsManual Gravimetr
13、ic Method”, available from International Organization for Standardization, Casa Postale 56, CH-1211, Geneva Switzerland.3 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer
14、to the standards Document Summary page on the ASTM website.4 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the prev
15、ious version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM In
16、ternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States12.2 ISO Standards:5ISO 5725 Precision of test methodsDetermination of repeatability and reproducibility by inter-laboratory testsISO 9096 Stationary source emissionsDetermination of concentration and mas
17、s flow rate of particulate material ingas-carrying ducts. Manual gravimetric methodISO 10780 Stationary source emissionsMeasurement of velocity and volume flow rate of gas stream in ducts3. Terminology3.1 For definitions of terms used in this test method, refer to Terminology D1356.3.2 Definitions o
18、f Terms Specific to This Standard:3.2.1 filtration temperaturethe temperature of the sampled gas immediately downstream of the filter.3.2.2 high volume samplingsampling at higher rates than typical in Test Methods D3685/D3685M by using larger diameternozzles and higher flow rates to maintain isokine
19、tic sampling conditions.3.2.2.1 DiscussionNozzle sizes are typically 20 to 50 mm, with corresponding flow rates from 5 to 50 m3/s.3.2.3 hydraulic diameter, dhdh 5 43area of sampling planeperimeter of sampling plane (1)3.2.4 in-stack filtrationfiltration in the stack or duct where the filter in its f
20、ilter housing is placed immediately downstreamof the sampling nozzle and collects particulate matter in the flue gas, under flue gas conditions.3.2.5 measurement seriessuccessive measurements carried out at the same sampling plane and at the same process conditions.3.2.6 out-stack filtrationa sampli
21、ng technique where the filter, in its filter housing, collects particulate matter under controlledtemperature conditions outside of the stack or duct.3.2.7 overall blankthe sample taken in a manner identical to the flue gas test samples, except that the sampling duration isshortened to less than 1 m
22、in.3.2.7.1 DiscussionThe overall blank value is expressed in the same units as the measurement result (for example, mg/m3) using the average samplingvolume of the measurement series. The overall blank includes possible deposits on the filter and surfaces upstream of the filter incontact with the sam
23、ple gas.3.2.8 particulate matter (dust)solid particles of any shape, structure, or density dispersed in the gas phase at flue gastemperature and pressure conditions.3.2.8.1 DiscussionIn accordance with the described test method, all material that may be collected by filtration under specified condit
24、ions and thatremains upstream of the filter and on the filter after drying under specified conditions are considered to be particulate matter.However, for the purposes of some regulatory standards, the definition of particulate matter may extend to condensibles or reactedmaterials collected under sp
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