【国外标准】 Standard Test Methods for the Determination of Arsenic and Lead in Ferromanganese (Withdrawn 2005)

1.1 These test methods cover the chemical analysis of ferromanganese having chemical compositions within the following limits:ElementConcentration, %Arsenic0.30 maxCarbon7.50 maxChromium0.50 maxLead0.050 maxManganese16.0 to 90.0Phosphorus0.35 maxSilicon7.00 maxSulfur0.050 maxTin0.020 max1.2 The test methods in this standard are contained in the sections indicated below:SectionsArsenic by the Molybdenum Blue Photometric Method (0.002to 0.06 %) Lead by the Dithizone Photometric Method (0.004 to 0.01 %)1.3 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. Specific hazard statements are given in Section 5 and in special warning paragraphs throughout.