1、Designation:D85712Standard Test Method forAluminum in Water1This standard is issued under the fixed designation D857;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year
2、 of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the direct flame atomic absorp-tion determination of aluminum in the nitrous oxide-acetyleneflame.1.2 This test method is applicable to waters containingd
3、issolved and total recoverable aluminum in the range from 0.5to 5.0 mg/L.Aluminum concentrations as high as approxi-mately 50 mg/L can be determined using this test methodwithout dilution.However,no precision and bias data areavailable for concentrations greater than 5.0 mg/L.1.3 This test method wa
4、s tested on reagent,natural,andpotable waters.It is the users responsibility to ensure thevalidity of this test method for waters of untested matrices.1.4 The same digestion procedure may be used to determinetotal recoverable nickel(Test Methods D1886),chromium(Test Methods D1687),cobalt(Test Method
5、s D3558),copper(Test Methods D1688),iron(Test Methods D1068),lead(TestMethod D3559),manganese(Test Method D858),and zinc(Test Methods D1691).1.5 Precision and bias data have been obtained on reagent,natural,and potable waters.It is the responsibility of the userto ensure the validity of this test me
6、thod on untested matrices.1.6 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are mathematical conversions and may not beexact equivalents;therefore,each system shall be used inde-pendently of the other.1.7 This standa
7、rd 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.For specific hazardstatements,see
8、 Note 1,Note 2,and Note 4.1.8 Former Test Methods A(Fluorometric)and B and C(Spectrophotometric)were discontinued.Refer to AppendixX1 for historical information.2.Referenced Documents2.1 ASTM Standards:2D858 Test Methods for Manganese in WaterD1066 Practice for Sampling SteamD1068 Test Methods for I
9、ron 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 of Precision and Bias ofApplica
10、ble Test Methods of Committee D19 on WaterD3370 Practices for Sampling Water from Closed ConduitsD3558 Test Methods for Cobalt in WaterD3559 Test Methods for Lead in WaterD4841 Practice for Estimation of Holding Time for WaterSamples Containing Organic and Inorganic ConstituentsD5810 Guide for Spiki
11、ng into Aqueous SamplesD5847 Practice for Writing Quality Control Specificationsfor Standard Test Methods for Water Analysis3.Terminology3.1 Definitions For definitions of terms used in these testmethods,refer to Terminology D1129.3.2 Definitions of Terms Specific to This Standard:3.2.1 total recove
12、rable aluminum,nan arbitrary termrelating to the forms of aluminum recovered in the aciddigestion procedure specified in this test method.4.Summary of Test Method4.1 Aluminum is determined by direct atomic absorptionwith only the addition of an ionization suppressor and sensi-tivity enhancer(optiona
13、l).5.Significance and Use5.1 Although there is little information available concerningthe toxicological significance of aluminum in man,the Ameri-can Water Works Association has established a water quality1These test methods are under the jurisdiction of ASTM Committee D19 onWater and are the direct
14、 responsibility of Subcommittee D19.05 on InorganicConstituents in Water.Current edition approved Sept.1,2012.Published September 2012.Originallyapproved in 1945.Last previous edition approved in 2007 as D857 071.DOI:10.1520/D0857-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org
15、,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West
16、 Conshohocken,PA 19428-2959.United States1 guideline or goal of a maximum of 0.05 mg/L.Under theNational Pollution Discharge Elimination System(NPDES),some permits may set aluminum discharge limits.Someevidence does exist to indicate that low levels(5 mg/L)willinterfere with activated sludge processes.For the above rea-sons monitoring of aluminum may be desirable.5.2 Aluminum is monitored in boiler make-up water,wherealum has been used,to determine whether aluminum is presentafter pretreatment.R
