Home / Standards / GB 13580.13-92 GB 13580.13-92 Determination of calcium and magnesium in atmospheric precipitation — Atomic absorption spectrophotometric method 大气降水中钙、镁的测定 原子吸收分光光度法 Standard Type GB ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A