Home / Standards / GB/T 19542-2025 GB/T 19542-2025 Active Determination of sulfonamides in feeds—Liquid chromatography-tandem mass spectrometry 饲料中磺胺类药物的测定 液相色谱-串联质谱法 Standard Type GBT ICS 65.120 CCS B 46 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A