ASTM E1775-2007 Standard Guide for Evaluating Performance of On-Site Extraction and Field-Portable Electrochemical or Spectrophotometric Analysis for Lead《铅的现场提取和便携式电气化学或分光光度分析的性能评.pdf
《ASTM E1775-2007 Standard Guide for Evaluating Performance of On-Site Extraction and Field-Portable Electrochemical or Spectrophotometric Analysis for Lead《铅的现场提取和便携式电气化学或分光光度分析的性能评.pdf》由会员分享,可在线阅读,更多相关《ASTM E1775-2007 Standard Guide for Evaluating Performance of On-Site Extraction and Field-Portable Electrochemical or Spectrophotometric Analysis for Lead《铅的现场提取和便携式电气化学或分光光度分析的性能评.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: E 1775 07Standard Guide forEvaluating Performance of On-Site Extraction and Field-Portable Electrochemical or Spectrophotometric Analysisfor Lead1This standard is issued under the fixed designation E 1775; the number immediately following the designation indicates the year oforiginal ad
2、option or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This standard provides guidelines for determining theperformance of f
3、ield-portable quantitative lead analysis instru-ments.1.2 This guide applies to field-portable electroanalytical andspectrophotometric (including reflectance and colorimetric)analyzers.1.3 Sample matrices of concern herein include paint, dust,soil, and airborne particles.1.4 This guide addresses the
4、 desired performance character-istics of field-based sample extraction procedures for lead, aswell as on-site extraction followed by field-portable analysis.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 o
5、f this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D 5438 Practice for Collection of Floor Dust for ChemicalAnalysisD 6785 Test Method for Determination of Lead in Wo
6、rk-place Air Using Flame or Graphite Furnace Atomic Ab-sorption SpectrometryD 6966 Practice for Collection of Settled Dust SamplesUsing Wipe Sampling Methods for Subsequent Determi-nation of MetalsD 7035 Test Method for Determination of Metals and Met-alloids in Airborne Particulate Matter by Induct
7、ivelyCoupled Plasma Atomic Emission Spectrometry (ICP-AES)D 7144 Practice for Collection of Surface Dust by Micro-vacuum Sampling for Subsequent Metals DeterminationE 1605 Terminology Relating to Lead in BuildingsE 1613 Test Method for Determination of Lead by Induc-tively Coupled Plasma Atomic Emis
8、sion Spectrometry(ICP-AES), Flame Atomic Absorption Spectrometry(FAAS), or Graphite Furnace Atomic Absorption Spec-trometry (GFAAS) TechniquesE 1644 Practice for Hot Plate Digestion of Dust WipeSamples for the Determination of LeadE 1645 Practice for Preparation of Dried Paint Samples byHotplate or
9、Microwave Digestion for Subsequent LeadAnalysisE 1726 Practice for Preparation of Soil Samples by HotplateDigestion for Subsequent Lead AnalysisE 1727 Practice for Field Collection of Soil Samples forSubsequent Lead DeterminationE 1729 Practice for Field Collection of Dried Paint Samplesfor Subseque
10、nt Lead DeterminationE 1792 Specification for Wipe Sampling Materials for Leadin Surface DustE 1864 Practice for Evaluating Quality Systems of Organi-zations Conducting Facility and Hazard Assessments forLead in Paint, Dust, Airborne Particulate, and Soil in andaround Buildings and Related Structure
11、s2.2 U.S. EPA Documents:3EPA 600/R-93/200 Standard Operating Procedure for theField Analysis of Lead in Paint, Bulk Dust, and Soil byUltrasonic,Acid Digestion and Colorimetric Measurement(1993)EPA 747-R-92-001 Laboratory Accreditation Guidelines:Measurement of Lead in Paint, Dust, and Soil (1992)3.
12、Terminology3.1 For definitions of terms not listed here, see TerminologyE 1605.3.2 anodic stripping voltammetryan electroanalyticaltechnique in which the concentration of analyte metal speciesdissolved in solution is determined in the following manner:1This guide is under the jurisdiction of ASTM Co
13、mmittee E06 on Performanceof Buildings and is the direct responsibility of Subcommittee E06.23 on LeadHazards Associated with Buildings.Current edition approved Aug. 1, 2007. Published August 2007. Originallyapproved in 1996. Last previous edition approved in 2001 as E 1775 01.2For referenced ASTM s
14、tandards, 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.3Available from United States Environmental Protection Agency (EPA), ArielRios Bldg
15、., 1200 Pennsylvania Ave., NW, Washington, DC 20460, http:/www.epa.gov.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.The analyte is first deposited (preconcentrated) electrochemi-cally by reducing the dissolved ion in solution to i
16、mmobilizedmetal species at an electrode surface (such as mercury orbismuth). The metal is deposited at an applied potential(voltage) which is negative of the standard oxidation potentialfor the metal/ion redox couple. After deposition, the precon-centrated metal species is then stripped from the ele
17、ctrode byapplying a positive potential sweep, which causes anodicoxidation of the analyte metal species to dissolved ion. Thecurrent associated with this reoxidation is measured. The peakcurrent is proportional to the original concentration of dis-solved analyte species over a wide range of concentr
18、ations.3.3 colorimetryan analytical technique that is similar tospectrophotometry (see 3.5), except that ultraviolet-visiblelight of a single, narrow wavelength range is passed through asample cell containing dissolved analyte, and the absorptionmeasured.3.4 reflectancea measurement technique (subse
19、t of spec-trophotometry; see 3.5) in which light is reflected off of areflecting surface and measured by a detector. The amount ofreflected light may be a function of analyte concentration.3.5 spectrophotometryan analytical technique in which aspectrum of analyte species is obtained and used to dete
20、rminethe analyte concentration in the following manner. Light isdirected onto or through analyte species, and the absorption ofthis light across a range of wavelengths is measured by adetector. The amount of absorbed light is a function of theconcentration of analyte species.4. Significance and Use4
21、.1 This guide is intended for use in evaluating the perfor-mance of field-portable electroanalytical or spectrophotometricdevices for lead determination, or both.4.2 Desired performance criteria for field-based extractionprocedures are provided.4.3 Performance parameters of concern may be determined
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