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Description of ASTM-D1252 2012ASTM D1252 - 06(2012)e1Standard Test Methods for Chemical Oxygen Demand (Dichromate Oxygen Demand) of WaterActive Standard ASTM D1252 | Developed by Subcommittee: D19.06 Book of Standards Volume: 11.02 ASTM D1252Significance and Use 5.1 These test methods are used to chemically determine the maximum quantity of oxygen that could be consumed by biological or natural chemical processes due to impurities in water. Typically this measurement is used to monitor and control oxygen-consuming pollutants, both inorganic and organic, in domestic and industrial wastewaters. 5.2 The relationship of COD to other water quality parameters such as TOC and TOD is described in the literature. 3 1. Scope
1.1 These test methods cover the determination of the quantity of oxygen that certain impurities in water will consume, based on the reduction of a dichromate solution under specified
conditions. The following test methods are included: 1.2 These test methods are limited by the reagents employed to a maximum chemical oxygen demand (COD) of 800 mg/L. Samples with higher COD concentrations may be processed by appropriate dilution of the sample. Modified procedures in each test method (Section 15 for Test Method A and Section 24 for Test Method B) may be used for waters of low COD content (< 50 mg/L). 1.3 As a general rule, COD results are not accurate if the sample contains more than 1000 mg/L Cl ? . Consequently, these test methods should not be applied to samples such as seawaters and brines unless the samples are pretreated as described in Appendix X1 . 1.4 This test method was used successfully on a standard made up in reagent water. It is the user's responsibility to ensure the validity of these test methods for waters of untested matrices. 1.5 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 8 , 15.6 , and 24.5 .
ASTM Standards D1129 Terminology Relating to Water D1193 Specification for Reagent Water D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water D3223 Test Method for Total Mercury in Water D3370 Practices for Sampling Water from Closed Conduits D5905 Practice for the Preparation of Substitute Wastewater E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers Keywords chemical oxygen demand; COD; demand; oxygen demand ; ICS Code ICS Number Code 13.060.50 (Examination of water for chemical substances) DOI: 10.1520/D1252 ASTM International is a member of CrossRef. ASTM D1252This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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