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ASTM D8084-17

(Test Method)

Standard Test Method for Photoelectrochemical Oxygen Demand of Freshwater Sources for Drinking Water Treatment Plants and Treated Drinking Water

Standard Test Method for Photoelectrochemical Oxygen Demand of Freshwater Sources for Drinking Water Treatment Plants and Treated Drinking Water

SIGNIFICANCE AND USE
5.1 This test method describes a rapid method to determine the maximum quantity of oxygen that may be consumed by impurities in water. As outlined in Test Methods D1252, chemical oxygen demand is typically used to monitor and control oxygen-consuming pollutants, both organic and inorganic, in domestic and industrial wastewaters. This photoelectrochemical oxygen demand test method is specific for measuring organics and inorganics in freshwater sources for drinking water treatment plants and treated drinking water matrices. This photoelectrochemical oxygen demand test method is not intended for domestic and industrial wastewaters to replace Test Methods D1252.  
5.2 This test method does not require the use of the hazardous reagents, such as mercuric sulfate, potassium dichromate and silver sulfate, that are associated with chemical oxygen demand. It can also provide a result more rapidly than chemical oxygen demand as samples do not require reflux.
SCOPE
1.1 This test method covers a protocol for the determination of the photoelectrochemical oxygen demand of freshwater sources for drinking water treatment plants and treated drinking water in the range of 0.7 mg/L to 20 mg/L. Higher levels may be determined by sample dilution.  
1.2 Photoelectrochemical oxygen demand is determined using the current generated from the photoelectrochemical oxidation of the sample using titanium dioxide (TiO2) irradiated with ultraviolet (UV) light from a light-emitting diode (LED).  
1.3 This test method does not require the use of the hazardous reagents, such as mercuric sulfate, potassium dichromate and silver sulfate, that are often associated with the determination of chemical oxygen demand (that is, Test Methods D1252). It can also provide a result rapidly, as samples do not require reflux.  
1.4 Determination of photoelectrochemical oxygen demand in freshwater sources for drinking water treatment plants and treated drinking water matrices has important implications for assessing treatment efficacy. Photoelectrochemical oxygen demand can be used as a bulk surrogate measure of natural organic matter, a key target for drinking water treatment. In aerobic biological treatment processes, determination of photoelectrochemical oxygen demand can provide an estimation of the oxygen required by microorganisms to degrade organic matter. This test method is complementary to existing natural organic matter (NOM) monitoring techniques and will help scientists and engineers further the understanding of NOM in water with a rapid oxygen demand test.  
1.5 This test method was used successfully with reagent grade water spiked with pure compounds, freshwater sources for drinking water treatment plants and treated drinking water. It is the user’s responsibility to ensure the validity of this test method for waters of untested matrices.  
1.6 This test method is applicable to oxidizable matter,  
Note 1: This test method can be performed (1) immediately in the field or laboratory on an unpreserved sample, and (2) in the laboratory on a properly preserved sample following the stated hold times.  
1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.8 This standard does not purport to address all of the safety concerns, 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. For specific hazard statements, see Section 9.  
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
14-Jul-2017
ICS
13.060.20 - Drinking water
Technical Committee
D19 - Water
Drafting Committee
D19.06 - Methods for Analysis for Organic Substances in Water
Current Stage
Ref Project

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ASTM D8084-17 - Standard Test Method for Photoelectrochemical Oxygen Demand of Freshwater Sources for Drinking Water Treatment Plants and Treated Drinking WaterASTM D8084-17 - Standard Test Method for Photoelectrochemical Oxygen Demand of Freshwater Sources for Drinking Water Treatment Plants and Treated Drinking Water
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ASTM D8084-17 - Standard Test Method for Photoelectrochemical Oxygen Demand of Freshwater Sources for Drinking Water Treatment Plants and Treated Drinking Water
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8084 − 17
Standard Test Method for
Photoelectrochemical Oxygen Demand of Freshwater
Sources for Drinking Water Treatment Plants and Treated
1
Drinking Water
This standard is issued under the fixed designation D8084; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope It is the user’s responsibility to ensure the validity of this test
method for waters of untested matrices.
1.1 This test method covers a protocol for the determination
of the photoelectrochemical oxygen demand of freshwater 1.6 This test method is applicable to oxidizable matter, <50
sources for drinking water treatment plants and treated drink- µm that can be introduced into the sensor.
ing water in the range of 0.7 mg/L to 20 mg/L. Higher levels
NOTE 1—This test method can be performed (1) immediately in the
may be determined by sample dilution.
field or laboratory on an unpreserved sample, and (2) in the laboratory on
a properly preserved sample following the stated hold times.
1.2 Photoelectrochemical oxygen demand is determined
using the current generated from the photoelectrochemical
1.7 The values stated in SI units are to be regarded as
oxidation of the sample using titanium dioxide (TiO ) irradi-
standard. No other units of measurement are included in this
2
ated with ultraviolet (UV) light from a light-emitting diode
standard.
(LED).
1.8 This standard does not purport to address all of the
1.3 This test method does not require the use of the
safety concerns, if any, associated with its use. It is the
hazardous reagents, such as mercuric sulfate, potassium di- responsibility of the user of this standard to establish appro-
chromate and silver sulfate, that are often associated with the
priate safety and health practices and determine the applica-
determination of chemical oxygen demand (that is, Test Meth-
bility of regulatory limitations prior to use. For specific hazard
ods D1252). It can also provide a result rapidly, as samples do
statements, see Section 9.
not require reflux.
1.9 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.4 Determination of photoelectrochemical oxygen demand
ization established in the Decision on Principles for the
in freshwater sources for drinking water treatment plants and
Development of International Standards, Guides and Recom-
treated drinking water matrices has important implications for
mendations issued by the World Trade Organization Technical
assessing treatment efficacy. Photoelectrochemical oxygen de-
Barriers to Trade (TBT) Committee.
mand can be used as a bulk surrogate measure of natural
organic matter, a key target for drinking water treatment. In
2. Referenced Documents
aerobic biological treatment processes, determination of pho-
2
toelectrochemicaloxygendemandcanprovideanestimationof
2.1 ASTM Standards:
the oxygen required by microorganisms to degrade organic
D1129 Terminology Relating to Water
matter. This test method is complementary to existing natural
D1193 Specification for Reagent Water
organic matter (NOM) monitoring techniques and will help
D1252 Test Methods for Chemical Oxygen Demand (Di-
scientists and engineers further the understanding of NOM in
chromate Oxygen Demand) of Water
water with a rapid oxygen demand test.
D2777 Practice for Determination of Precision and Bias of
Applicable Test Methods of Committee D19 on Water
1.5 This test method was used successfully with reagent
D3370 Practices for Sampling Water from Closed Conduits
grade water spiked with pure compounds, freshwater sources
D5847 Practice for Writing Quality Control Specifications
for drinking water treatment plants and treated drinking water.
for Standard Test Methods for Water Analysis
1
This test method is under the jurisdiction of ASTM Committee D19 on Water
2
andisthedirectresponsibilityofSubcommitteeD19.06onMethodsforAnalysisfor For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Organic Substances in Water. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 15, 2017. Published August 2017. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D8084-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D8084
...

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1.3 This test method is used to measure and describe the properties of hand protective products in response to convective and radiant energy generated by an electric arc under controlled laboratory conditions.  
1.4 This test method does not apply to electrical contact or electrical shock hazards.  
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined  
1.6 This standard shall not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire assessment that takes into account all of the factors, which are pertinent to an assessment of the fire hazard of a particular end use.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this s...

  • Standard
    14 pages
    English language
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  • Standard
    14 pages
    English language
    sale 15% off