The content of total flavone of QG w as determ ined by spectrophotometry .Results QG was stable at r oom temperature within 2 years .

• 结果:常温下放置2年，芹灵冲剂质量检查和卫生检查结果符合标准，恒温恒湿放置3个月，产品黄酮含量未降低。