2025-11-23 05:44 浏览次数 7
高纯度化学试剂
The same amount of analar or aristar grade sulphuric acid is added as matrix, achieving matrix-matched, and satisfactory calibration.
绘制校準曲线用标準溶液,加入与测定样品相同量的分析纯硫酸为基体。