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适用范围：<p>This test is used to determine trace quantities of lead in unleaded gasoline. Unwarranted amounts of lead may cause deposits in automotive pollution control equipment and poisoning of catalytic mufflers. </p><p id="s00002">1.1 This test method covers and is intended for use in the field by nontechnical people for the quantitative measurement of lead in unleaded gasoline in the range from 0.01 to 0.10 g Pb/U.S. gal (2.64 to 26.4 mg Pb/L). This method applies to all commercial gasolines and responds to all types of lead alkyls as well as to other organic and inorganic forms of lead. <p class="desc"> <span class="smallcap">Note</span> 18212;This test method is based on the use of the Mobil Lead Test Kit (Fig. 1).</p> <p class="desc"> <span class="smallcap">Note</span> 28212;This test method is a screening test and is not to be used as a replacement for withdrawn Test Method D 3116<astmref rid="a00001">, withdrawn Test Method D 3229<astmref rid="a00002">, or Test Method D 3237<astmref rid="a00003">.</p> </p> <p id="s00055">1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.</p> <p id="s00003">1.3 <span class="italic">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. <span class="med">For specific warning statements, see Section 7.</span></span><p class="fig" id="f00003"><img src="http://www.astm.org/HTTP/IMAGES/3324.gif"><br> <span class="bold">FIG. 1 Mobil Lead Test Kit</span></p>