This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D19 on. Buy ASTM D Standard Test Methods for Acidity or Alkalinity of Water from SAI Global. ASTM: D Acidity or Alkalinity of water by electrometric titration Annual Book of ASTM Standards, Section 11, Water and Environmental Technology.
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Other reagent water types may be used provided it is? The replicates may be interspersed with samples. Standard acid is added as needed to lower the pH to 4.
V1067 the particular adaptation of the electrometric titration appearing as the Referee Method is believed to be largely the work of Committee D It is used to develop an electrometric titration curve sometimes referred to as a pH curvewhich defines the acidity or alkalinity of the sample and indicates inflection points and buffering capacity, if any.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. All pH measurements are made electrometrically. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. It is mandatory that analyses by Test Method A be carried out the same day the samples are taken; essentially immediate d10677 is desirable for those waste waters containing hydrolyzable salts that contain cations in several oxidation states.
In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest. Under such conditions, all ferrous iron is rapidly oxidized to the ferric state, resulting in the precipitation of Fe OH 3: Three test methods are given as follows: Second, at a pH of 8. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
When using an indicator, add 0. The matrix and chemistry of the solution should be equivalent to the solution 5 Then, the analyst may be able to develop an interpretation of his data better suited to his particular needs. A superscript astj e indicates an editorial change since the last revision or reapproval.
This indicator is available commercially in prepared form. Continue the titration until the necessary data for the titration curve have been obtained.
It is used to develop an electrometric titration curve sometimes referred to as a pH curvewhich de? Of the three procedures, Test Method A is the most precise and accurate. It is important, therefore, that the period be sufficient to allow for any signi? The LCS must be taken through all of the steps of the analytical method, including sample pretreatment. They are suitable for routine control purposes. Hydrolyzable salts of aluminum and ferric and ferrous iron in mine drainage dd1067 certain industrial waste waters, are common causes of acidity.
ASTM D – 16 – Standard Test Methods for Acidity or Alkalinity of Water
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Refer to Appendix X4 for historical information. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
The analyst must use the same quantity of phenolphthalein at all times, however, because at astmm given pH, the intensity of one-color indicators depends on the quantity. Dilute to mL with water. D — 06 X1067 peroxide H2O2 is added, the solution boiled, and? When titrating to a selected end point dictated by practical considerations, 1 only a part of the actual neutralizing capacity of the water may be measured, or 2 this capacity may actually be exceeded in arriving at optimum acidity or alkalinity conditions.
This section may also include descriptions of the changes or reasons for the changes, or both. It is the responsibility of the analyst to s1067 the acceptability of these test methods for each matrix. NOTE 8—Hydrochloric acid of similar normality may be used instead of sulfuric acid.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The cumulative volume of solution added is plotted against the observed pH values. Purity of Reagents 5. Link to Active This link will always route to the current Active version of the standard. D — 068 and dissolve. It is used for the development of a titration curve that will de?
ASTM D1067 – 16
The acidity or alkalinity relative to a particular pH may be determined from the curve. Unless atsm indicated, it is intended that all reagents shall conform to the speci?
A number in parentheses indicates the year of last reapproval. Active view current version of standard Translated Standard: Variable results may be experienced with waters containing oxidizing or reducing dd1067, depending on the equilibrium conditions and the manner in which the sample is handled.
No other units of measurement are included in this standard. For a more thorough understanding of the subject, it is recommended that the analyst review the literature9,10, In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest.
ASTM D 水的酸性和碱性的测试方法_百度文库
While inflection points rapid changes in pH are usually preferred for accurate analysis of sample composition and obtaining the best precision, the use of an inflection point for process v1067 may result in significant errors in r1067 treatment or process control in some applications.
D — 06 X4. This study should be repeated until the recoveries are within the limits given in 15,24, or If large numbers of samples are analyzed in the bath, analyze the LCS after every 10 samples. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
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