1、Designation:D675916Standard Practice forSampling Liquids Using Grab and Discrete Depth Samplers1This standard is issued under the fixed designation D6759;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A num
2、ber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes sampling devices and proceduresfor collecting samples of liquids or sludges,or both,whoseupper surface can be accessed
3、 by the suitable device.Thesedevices may be used to sample tanks that have an appropriatelysized and located sampling port.1.2 This practice describes and discusses the advantages andlimitations of the following commonly used equipment,someof which can be used for both grab and discrete depthsamplin
4、g:dipper,liquid grab sampler,swing jar sampler,Bacon Bomb,Kemmerer sampler,Discrete Level sampler,liquid profiler,peristaltic pump,and the Syringe sampler.1.3 This practice provides instructions on the use of thesesamplers.1.4 This practice does not address sampling devices forcollecting ground wate
5、r.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Doc
6、uments2.1 ASTM Standards:2D4687 Guide for General Planning of Waste SamplingD4840 Guide for Sample Chain-of-Custody ProceduresD5088 Practice for Decontamination of Field EquipmentUsed at Waste SitesD5283 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Quality As
7、suranceand Quality Control Planning and ImplementationD5358 Practice for Sampling with a Dipper or Pond SamplerD5612 Guide for Quality Planning and Field Implementa-tion of a Water Quality Measurement ProgramD5681 Terminology for Waste and Waste ManagementD5743 Practice for Sampling Single or Multil
8、ayeredLiquids,With or Without Solids,in Drums or SimilarContainersD5792 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Development ofData Quality ObjectivesD5956 Guide for Sampling Strategies for HeterogeneousWastesD6044 Guide for Representative Sampling for Ma
9、nagementof Waste and Contaminated MediaD6051 Guide for Composite Sampling and Field Subsam-pling for Environmental Waste Management ActivitiesD6232 Guide for Selection of Sampling Equipment forWaste and Contaminated Media Data CollectionActivitiesD6233 Guide for Data Assessment for Environmental Was
10、teManagement Activities(Withdrawn 2016)3D6311 Guide for Generation of Environmental Data Relatedto Waste Management Activities:Selection and Optimiza-tion of Sampling DesignD6323 Guide for Laboratory Subsampling of Media Relatedto Waste Management ActivitiesD6538 Guide for Sampling Wastewater With A
11、utomaticSamplersD6699 Practice for Sampling Liquids Using Bailers3.Terminology3.1 discrete depth sample,nsample obtained from a de-fined level within the liquid being sampled.3.2 grab sample,nindividual sample collected over aperiod of time usually not exceeding 15 min and in such amanner as to be r
12、epresentative of conditions at the time ofsampling.Grab samples are sometimes called individual ordiscrete samples.3.3 representative sample,nsample collected such that itreflects one or more characteristics of interest(as defined bythe project objectives)of a population from which it wascollected.D
13、59561This practice is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.01.03 onSampling Equipment.Current edition approved Oct.15,2016.Published November 2016.Originallyapproved in 2002.Last previous edition approved in 2009 as D675
14、9 09.DOI:10.1520/D6759-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this histo
15、rical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.4 sample,nsee Terminology D5681.3.5 sludge,nany mixture of solids that settles out ofsolution.Sludges contain liquids that are not apparent as f
16、reeliquids(see Practice D5743).D63234.Significance and Use4.1 Sampling at specified depth(s)within a liquid may beneeded to confirm or rule out variations within a targetpopulation.This practice describes the design and operation ofcommercially available grab and discrete depth samplers forpersons responsible for designing or implementing samplingprograms,or both.4.2 These sampling devices are used for sampling liquids intanks,ponds,impoundments,and other open bodies of water.Some may be used fr
