ASTM D1067 PDF

ASTM D1067 PDF

admin

May 19, 2020

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.

Author: Zolorn Gagami
Country: Republic of Macedonia
Language: English (Spanish)
Genre: Business
Published (Last): 7 January 2018
Pages: 203
PDF File Size: 6.87 Mb
ePub File Size: 10.7 Mb
ISBN: 471-6-70794-222-5
Downloads: 62082
Price: Free* [*Free Regsitration Required]
Uploader: Mozil

Purity of Reagents 5.

A number in parentheses indicates the year of last reapproval. Originally published as D — Three test methods are given as follows: The other two methods are used to determine acidity or alkalinity relative to a predesignated end point based on the change in color of an internal indicator or the equivalent end point measured r1067 a pH meter.

Refer to Appendix X4 for historical information. It is used to develop an electrometric titration curve sometimes referred to as a pH curvewhich de? NOTE 6—After some practice, slightly more or less indicator may be preferred. It is mandatory that analyses by Test Method A be carried out the same day the samples are taken; essentially immediate analysis is desirable for those waste waters containing hydrolyzable salts that contain cations in several oxidation states.

Hold the tip of the pipette near the bottom of the container while discharging the sample. As the end point is approached, a momentary change in color will be noted in that portion of the sample with which the reagent? When using an indicator, add 0. Historical Version s – view previous versions of standard.

Hydrogen peroxide H2O2 is added, the solution boiled, and? satm

It is the responsibility of the analyst to determine the acceptability of these test methods for each matrix. Of the three procedures, Test Method A is the most precise and accurate. The other two methods are used to determine acidity or alkalinity relative to a predesignated end point based on the change in color of an internal indicator or the equivalent end point measured by a pH meter.

  HUD 7584 PDF

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. Test Method A Electrometric Titration. NOTE 5—The choice of end point will have been c1067 to provide optimum data for the intended use or disposition of the water.

All pH measurements are made electrometrically.

If the sample is colorless, titrate to the phenolphthalein color change while hot. In some instances the reaction time may be an interval of a few seconds while other slower, more complex reactions may require much longer intervals. It is particularly applicable to mine drainage, industrial waste waters carrying waste acids, and similar waters. The other two methods are used to determine acidity or alkalinity relative to a predesignated end point based on the change in color of an internal indicator or the equivalent end point measured by a pH meter.

D — 06 X4. Prepare and standardize in like manner. It is important, therefore, that the period be sufficient to allow for any signi? Suspended solids may interfere in electrometric titrations by making the glass electrode sluggish. 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 control may result in significant errors in chemical treatment or process control in some applications.

If large numbers of samples are analyzed in the bath, analyze the LCS after every 10 samples. In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest.

ASTM D1067 – 16

To this solution add 0. NOTE 3—An electrometric titration curve is smooth, with the pH changing progressively in a single direction, if equilibrium is achieved after each incremental addition of titrant, and may contain one or more in?

Each replicate must be taken through the complete analytical test method including any sample pretreatment steps. They are suitable for routine control purposes.

Titration is carried out by means of an internal indicator using the color-change procedure described in Test Method B Electrometric or Color-Change Titration.

  HOLLYWOODLAND SCRIPT PDF

Last previous edition D — Historical Version s – view previous versions of standard Translated Version s: 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 control may result in significant errors in chemical treatment or process control in some applications. NOTE 2—If the sample requires appreciably more than 25 mL of standard solution for its titration, use a 0.

Link to Active This link will always route to the current Active version of the standard. Then, the analyst may be able to develop an interpretation of his data better suited to his particular needs. They are suitable for routine control purposes. Current edition approved Jan. Add the standard solution in small increments, swirling the?

ASTM D – 11 Standard Test Methods for Acidity or Alkalinity of Water

Active view current version of standard. This indicator is available commercially in prepared form. In many instances, the concentration of ferrous iron is such that a 2-min boiling period is not sufficient to assure complete asym.

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. The replicates may be interspersed with samples. Unless otherwise indicated, it is intended that all reagents shall conform to the speci?

In water analysis, a pH of about 4. NOTE 9—Minus acidity represents excess alkalinity contributed by constituents such as bicarbonates. Under the allowances made in 1. It is the responsibility of the analyst to determine the acceptability of these test methods for each matrix. In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest.