非常抱歉,我们暂时无法提供预览,您可以试试: 免费下载 ASTM D6832-2013e1 前三页,或者稍后再访问。
点击下载后,生成下载文件时间比较长,请耐心等待......
5.1x00a0;Airborne hexavalent chromium is carcinogenic (1),4 and analytical methods for the measurement of this species in workplace aerosols are desired. Worker exposure to hexavalent chromium occurs primarily through inhalation (1), and this test method provides a means for exposure assessment to this highly toxic species. Analytical results from this procedure can be used for regulatory compliance purposes (2).
1.1x00a0;This test method specifies a method for the determination of the time-weighted average mass concentration of hexavalent chromium in workplace air samples.
1.2x00a0;The method is applicable to the personal sampling of the inhalable fraction of airborne particles, as defined in ISO8201;7708, and to area (static) sampling.
1.3x00a0;The sample dissolution procedure specifies separate procedures for soluble and insoluble hexavalent chromium.
1.4x00a0;The method is applicable to the determination of masses of 0.01 x03bc;g to 10 x03bc;g of hexavalent chromium per sample without dilution.
1.5x00a0;The concentration range for hexavalent chromium in air for which this procedure is applicable is approximately 0.1 x03bc;g/m 3 to 100 x03bc;g/m3, assuming 1 m3 of air sample. The range can be extended upwards by appropriate dilution.
1.6x00a0;Interconversion of trivalent and hexavalent chromium species may occur during sampling and sample preparation, but these processes are minimized to the extent possible by the sampling and sample preparation procedures employed.
1.7x00a0;The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.8x00a0;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.
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号