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ASTM D3861-91(1998)

(Test Method)

Standard Test Method for Quantity of Water-Extractable Matter in Membrane Filters

Standard Test Method for Quantity of Water-Extractable Matter in Membrane Filters

SCOPE
1.1 This test method covers the gravimetric determination of the water-extractable material present in membrane filters and is applicable over the complete concentration range of extractables.  
1.2 The analyst should be aware that adequate collaborative data for precision and bias statements as required by Practice D2777 is not provided. See Section 11 for details.  
1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. 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.

General Information

Status
Historical
Publication Date
09-Dec-1998
ICS
13.060.50 - Examination of water for chemical substances
Technical Committee
D19 - Water
Drafting Committee
D19.08 - Membranes and Ion Exchange Materials
Current Stage
Ref Project

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Replaced By
ASTM D3861-91(2003) - Standard Test Method for Quantity of Water-Extractable Matter in Membrane Filters
Effective Date
15-Jun-1991

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ASTM D3861-91(1998) - Standard Test Method for Quantity of Water-Extractable Matter in Membrane FiltersASTM D3861-91(1998) - Standard Test Method for Quantity of Water-Extractable Matter in Membrane Filters
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ASTM D3861-91(1998) - Standard Test Method for Quantity of Water-Extractable Matter in Membrane Filters
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 3861 – 91 (Reapproved 1998)
Standard Test Method for
Quantity of Water-Extractable Matter in Membrane Filters
This standard is issued under the fixed designation D 3861; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 5. Significance and Use
1.1 This test method covers the gravimetric determination 5.1 The presence of water-soluble extractables in membrane
of the water-extractable material present in membrane filters filters can create errors in test procedures employing membrane
and is applicable over the complete concentration range of filters. However, these errors can be eliminated or significantly
extractables. reduced if the quantity of water-soluble extractables of the
1.2 The analyst should be aware that adequate collaborative specific membrane is previously determined. Certain mem-
data for precision and bias statements as required by Practice brane filter uses require specifications of maximum water-
D 2777 is not provided. See Section 11 for details. soluble extractable levels. This test method is intended to be a
1.3 This standard does not purport to address all of the rapid test to determine the loss of water-soluble compounds
safety problems, if any, associated with its use. It is the such as plasticizers or wetting agents from filtration mem-
responsibility of the user of this standard to establish appro- branes. This test method is not designed to predetermine the
priate safety and health practices and determine the applica- performance of a filter, but is significant in determining the
bility of regulatory limitations prior to use. percent extractables of membranes from different sources and
lot variations from a single source.
2. Referenced Documents
6. Apparatus
2.1 ASTM Standards:
D 1129 Terminology Relating to Water 6.1 Beaker, borosilicate glass, 300-mL capacity.
D 1193 Specification for Reagent Water 6.2 Forceps, stainless steel, unserrated tips.
D 2777 Practice for Determination of Precision and Bias of 6.3 Desiccator.
Applicable Methods of Committee D-19 on Water 6.4 Drying Oven, with thermostatic control.
6.5 Analytical Balance, sensitivity 0.01 mg.
3. Terminology 3
6.6 a-Emitting Polonium Source (to discharge static
3.1 Definitions—For definitions of terms used in this test
charge in balance).
method, refer to Terminology D 1129. 6.7 Humidity-Controlled Room or Hood, for balance.
6.8 Evaporating Dishes, glass, having sides or other means
4. Summary of Test Method
to keep test filters on the dish while drying.
4.1 The quantity of water-soluble extractables present in
7. Reagents and Materials
membrane filters is determined by immersing the preweighed
membrane in boiling reagent grade water for an extended time, 7.1 Purity of Water— Unless otherwise indicated, refer-
then drying and reweighing the membrane. A control mem-
ences to water shall be understood to mean Type III reagent
brane is employed to eliminate weighing errors caused by water conforming to Specification D 1193.
balance changes or changing moisture content of the mem-
7.2 Membrane Filters, 47-mm diameter (same type as those
brane in the weighing procedures. Weight changes of the under test).
control membrane are applied as a correction factor to the
8. Preparation of Apparatus and Materials
weight change of the test membrane filters.
8.1 Preparation of Samples and Apparatus:
8.1.1 Select 47-mm diameter sample (Note 1) membrane
This test method is under the jurisdiction of ASTM Committee D-19 on Water
filters for the test, and label with water-resistant ink.
and is the direct responsibility of Subcommittee D19.08 on Membranes and Ion
Exchange Materials.
Current edition approved June 15, 1991. Published December 1991. Originally
published as D 3861 – 79. Last previous edition D 3861 – 84. The “Staticmaster,” available from Nuclear Products Inc., El Monte, CA, has
Annual Book of ASTM Standards, Vol 11.01. been found suitable for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
D 3861
NOTE 1—Square or rectangular membrane of equivalent area (17.4 cm
10.2.1 If the
...

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Standard Test Methods for Selenium in Water

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4.3 These test methods determine the dominant species of selenium reportedly found in most natural and wastewaters, including selenities, selenates, and organo-selenium compounds.
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1.2 These test methods are applicable to both inorganic and organic forms of dissolved selenium. They are applicable also to particulate forms of the element, provided that they are solubilized in the appropriate acid digestion step. However, certain selenium-containing heavy metallic sediments may not undergo digestion.  
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1 μg/L to 20 μg/L  
Test Method B—Graphite Furnace AAS  
2 μg/L to 100 μg/L
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4.1 Most waters rarely contain more than trace concentrations of cobalt from natural sources. Although trace amounts of cobalt seem to be essential to the nutrition of some animals, large amounts have pronounced toxic effects on both plant and animal life.
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1.1 These test methods cover the determination of dissolved and total recoverable cobalt in water and wastewater 2 by atomic absorption spectrophotometry. Three test methods are included as follows:    
Concentration Range  
Sections  
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7 to 16  
Test Method B—Atomic Absorption, Chelation-Extraction  
10 μg/L to 1000 μg/L  
17 to 26  
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5 μg/L to 100 μg/L  
27 to 36  
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