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氣相色譜法檢測時色譜柱的選擇-上海91福利在线观看分析儀器有限公司

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氣相色譜法檢測時色譜柱的選擇

發布時間:2013/8/8點擊次數:4081

 氣相色譜柱是樣品中殘留溶劑測定的理論與物質基礎,所以對色譜柱的選擇也是zui關鍵的步驟。氣相色譜柱可分為填充柱和毛細管柱兩大類,其中填充柱又分玻璃 柱和不鏽鋼柱;毛細管柱按柱__口直徑一般又有0153mm和0132mm兩種規格,前者又叫大口徑毛細管柱,柱容量大,在殘留溶劑測定中應用較多。由於 毛細管柱造價高,中國藥典2000年版結合中國國情,用填充柱測定,美國藥典24版(USPXXIV)和英國藥典2000年版(BP2000)要求用毛細 管柱。從填料來分,填充柱一般選用高分子多孔小球係列。



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