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分析解決方案- 血液中乙醇含量的頂空氣相色譜法-上海91福利在线观看分析儀器有限公司

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分析解決方案- 血液中乙醇含量的頂空氣相色譜法

發布時間:2025/12/5點擊次數:641

分析解決方案-血液中乙醇含量的頂空氣相色譜法.

分析目的與原理:

本解決方案使用HS GC-FID來測定血液中乙醇的含量;以叔丁醇做內標物,用分流器來進行雙柱並聯,樣品分流後分別進入FID1和FID2,運用雙柱極性不同來更加準確的對乙醇殘留進度定性和定量分析。


實驗儀器:

HS G51Pro 頂空91福利片导航网

N2鋼瓶40L純度>99.999%

空氣:無油空氣發生器(XGA-380A)

氫氣:高純氫氣發生器(XGH-300E)


分析條件:

頂空條件:爐溫:70℃,傳輸管:130℃,閥體:110℃

平衡時間:40min,加壓時間:12s,取樣時間:12s,環平時間:10s,進樣時間:12s,反吹時間:5min


結論:

在此分析條件下,時間RSD<0.5%,麵積RSD<1.5%,重現性好靈敏度高,線性良好檢測結果準確可靠。基線噪音2-3uv,滿足最小檢測限要求,采用雙柱係統,由於雙柱極性不同,避免了因為不同化合物在一種性質的色譜柱上可能呈現相同的保留時間而導致結果可能誤判的情況發生,該方法操作簡單,靈敏度高,檢出限低,且適用性強。

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