ASTM D3645-2015 Standard Test Methods for Beryllium in Water《水中铍含量的标准试验方法》.pdf
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1、Designation: D3645 08D3645 15 An American National StandardStandard Test Methods forBeryllium in Water1This standard is issued under the fixed designation D3645; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi
2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 These test methods cover the determination of dissolved and total recoverable beryllium in most waters and wastewaters:C
3、oncentrationRange SectionsTest Method AAtomic Absorption, Direct 10 to 500 g/L 7 to 17Test Method BAtomic Absorption, Graphite Furnace 10 to 50 g/L 18 to 26ConcentrationRange SectionsTest Method AAtomic Absorption,Direct10 to 500 g/L 7 to 16Test Method BAtomic Absorption,Graphite Furnace10 to 50 g/L
4、 17 to 251.2 The analyst should direct attention to the precision and bias statements for each test method. It is the users responsibilityto ensure the validity of these test methods for waters of untested matrices.1.3 The values stated in SI units are to be regarded as standard. No other units of m
5、easurement are included in this The valuesgiven in parentheses are mathematical conversions to inch-pound units that are provided for information only and are notconsidered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the r
6、esponsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.For specific hazard statements, see Section 12 and 23.424.4.2. Referenced Documents2.1 ASTM Standards:2D858 Test Methods for Manganese
7、in WaterD1068 Test Methods for Iron in WaterD1129 Terminology Relating to WaterD1193 Specification for Reagent WaterD1687 Test Methods for Chromium in WaterD1688 Test Methods for Copper in WaterD1691 Test Methods for Zinc in WaterD1886 Test Methods for Nickel in WaterD2777 Practice for Determination
8、 of Precision and Bias of Applicable Test Methods of Committee D19 on WaterD3370 Practices for Sampling Water from Closed ConduitsD3557 Test Methods for Cadmium in WaterD3558 Test Methods for Cobalt in WaterD3559 Test Methods for Lead in WaterD3919 Practice for Measuring Trace Elements in Water by G
9、raphite Furnace Atomic Absorption SpectrophotometryD4841 Practice for Estimation of Holding Time for Water Samples Containing Organic and Inorganic ConstituentsD5673 Test Method for Elements in Water by Inductively Coupled PlasmaMass Spectrometry1 These test methods are under the jurisdiction of AST
10、M Committee D19 on Water and are the direct responsibility of Subcommittee D19.05 on Inorganic Constituentsin Water.Current edition approved Oct. 1, 2008Feb. 1, 2015. Published October 2008March 2015. Originally approved in 1978. Last previous edition approved in 20032008 asD3645 03.D3645 08. DOI: 1
11、0.1520/D3645-08.10.1520/D3645-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM
12、 standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all
13、 cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1D5810 Guide
14、 for Spiking into Aqueous SamplesD5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis3. Terminology3.1 DefinitionsDefinitions:For3.1.1 For definitions of terms used in these test methods, refer to Terminology D1129. definitions of terms used in these
15、 testmethods, refer to Terminology D1129.3.2 Definitions of Terms Specific to This Standard:3.2.1 total recoverable berylliumberyllium, ntotal recoverable beryllium relates only a descriptive term relating to therecoverable forms of beryllium by beryllium forms recovered in the acid-digestion proced
16、ure specified in these test methods.4. Significance and Use4.1 These test methods are significant because the concentration of beryllium in water must be measured accurately in order toevaluate potential health and environmental effects.5. Purity of Reagents5.1 Reagent grade chemicals shall be used
17、in all tests. Unless otherwise indicated, it is intended that all reagents shall conformto the specifications of the Committee on Analytical Reagents of the American Chemical Society, where such specifications areavailable.3 Other grades may be used, provided it is first ascertained that the reagent
18、 is sufficiently high in purity to permit its usewithout lessening the accuracy of the determination.5.2 Unless otherwise indicated, reference to water shall be understood to mean reagent water conforming to SpecificationD1193, Type I. Other reagent water types may be used provided it is first ascer
19、tained that the water is of sufficiently high purityto permit its use without adversely affecting the bias and precision of the test method. Type II water was specified at the time ofround robin testing of this test method.6. Sampling6.1 Collect the samples in accordance with Practices D3370.The hol
20、ding time for samples may be calculated in accordance withPractice D4841.6.2 Preserve samples with HNO3 (sp gr 1.42), adding about 2 mL/L, to a pH of 2 or less immediately at the time of collection.If only dissolved beryllium is to be determined, filter the sample, before acidification, through a 0.
21、45-m membrane filter.NOTE 1Alternatively, the pH may be adjusted in the laboratory if the sample is returned within 14 days. However, acid must be added at least 24hours before analysis to dissolve any metals that adsorb to the container walls. This could reduce hazards of working with acids in the
22、field whenappropriate.TEST METHOD AATOMIC ABSORPTION, DIRECT7. Scope7.1 This test method is applicable in the range from 10 to 500 g/Lof beryllium. The range may be extended upward by dilutionof the sample.7.2 The precision and bias data were obtained on reagent water, tap water, salt water, river w
23、ater, lake water, spring water, anduntreated wastewater. The information on precision and bias may not apply to other waters. It is the users responsibility to ensurethe validity of this test method for waters of untested matrices.8. Summary of Test Method8.1 Beryllium is determined by atomic absorp
24、tion spectrophotometry. Dissolved beryllium is determined by aspirating a filteredsample directly with no pretreatment. Total recoverable beryllium in the sample is determined in a portion of the filtrate obtainedafter a hydrochloric-nitric acid digestion of the sample. The same digestion procedure
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