The content of triazin in ceftriaxone sodium was calculated through peak area ratio between its area in test solution and ceftriaxone sodium area in 1.0% reference solution according to European Pharmacopoeia.

• 根据欧洲药典方法；用质量分数为1.；0%25的头孢曲松钠对照液做对照；以头孢曲松钠供试液中三嗪环的峰面积与质量分数为1