By using acetyl acetone as color reagents, the micro-formaldehyde can be determined at the point of 412nm with spectrophotometry.

 
  • 用乙酰丙酮作顯色劑 ,在 412nm處 ,用分光光度法可測定微量甲醛。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan