Home / Standards / HJ 489-2009 HJ 489-2009 Active 水质 银的测定3,5-Br2-PADAP分光光度法 Standard Type HJ48 ICS N/A CCS N/A Status Active Issue Date 2009-09-27 Implementation 2009-11-01 Centralized Committee 生态环境部 Issuing Authority 生态环境部