Home / Standards / GB/T 39261-2020 GB/T 39261-2020 Active Nanotechnologies—Guidance on physico-chemical characterization of engineered nanoscale materials for toxicologic assessment 纳米技术 纳米材料毒理学评价前理化性质表征指南 Standard Type GBT ICS 71.040.50 CCS A40 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 中国科学院 Drafting Unit N/A