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Description of ASTM-D7151 2005ASTM D7151 - 05Standard Test Method for Determination of Elements in Insulating Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)Active Standard ASTM D7151 | Developed by Subcommittee: D27.03 Book of Standards Volume: 10.03
Translated Standard: Russian ASTM D7151Significance and Use This test method covers the rapid determination of 12 elements in insulating oils, and it provides rapid screening of used oils for indications of wear. Test times approximate several minutes per test specimen, and detectability is in the 10-100 ? g/kg range. This test method can be used to monitor equipment condition and help to define when corrective action is needed. It can also be used to detect contamination such as from silicone fluids (via Silicon) or from dirt (via Silicon and Aluminum). This test method can be used to indicate the efficiency of reclaiming used insulating oil. 1. Scope 1.1 This test method describes the determination of metals and contaminants in insulating oils by inductively coupled plasma atomic emission spectrometry (ICP-AES). The specific elements are listed in Table 1. This test method is similar to Test Method D 5185, but differs in methodology, which results in the greater sensitivity required for insulating oil applications. 1.2 This test method uses oil-soluble metals for calibration and does not purport to quantitatively determine insoluble particulates. Analytical results are particle size dependent, and low results are obtained for particles larger than several micrometers. 1.3 This test method determines the dissolved metals (which may originate from overheating) and a portion of the particulate metals (which generally originate from a wear mechanism). While this ICP method detects nearly all particles less than several micrometers, the response of larger particles decreases with increasing particle size because larger particles are less likely to make it through the nebulizer and into the sample excitation zone. 1.4 This test method includes an option for filtering the oil sample for those users who wish to separately determine dissolved metals and particulate metals (and hence, total metals). 1.5 Elements present at concentrations above the upper limit of the calibration curves can be determined with additional, appropriate dilutions and with no degradation of precision. 1.6 The values stated in SI (metric) units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 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 standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use.
ASTM Standards C1109 Practice for Analysis of Aqueous Leachates from Nuclear Waste Materials Using Inductively Coupled Plasma-Atomic Emission Spectroscopy D923 Practices for Sampling Electrical Insulating Liquids D1744 Test Method for Water in Liquid Petroleum Products by Karl Fischer Reagent D2864 Terminology Relating to Electrical Insulating Liquids and Gases D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards D5185 Test Method for Determination of Additive Elements, Wear Metals, and Contaminants in Used Lubricating Oils and Determination of Selected Elements in Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) Keywords aluminum; cadmium; copper; emission-spectrometry; ICP; inductively coupled plasma atomic emission spectrometry; insulating fluid; iron; lead; silicon; silver; sodium; tin; transformer oil; tungsten; wear metals; zinc; ICS Code ICS Number Code 29.040.10 (Insulating oils) DOI: 10.1520/D7151-05 ASTM International is a member of CrossRef. ASTM D7151The following editions for this book are also available...This 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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