Warning: mkdir(): No space left on device in /www/wwwroot/T4.COM/func.php on line 127

Warning: file_put_contents(./cachefile_yuan/lohas-city.com/ganraoskin.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/func.php on line 115

Warning: mkdir(): No space left on device in /www/wwwroot/T4.COM/func.php on line 127

Warning: file_put_contents(./cachefile_yuan/lohas-city.com/ganraoskin2.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/func.php on line 115

Warning: mkdir(): No space left on device in /www/wwwroot/T4.COM/func.php on line 127

Warning: file_put_contents(./cachefile_yuan/lohas-city.com/ganraoskin3.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/func.php on line 115

Warning: mkdir(): No space left on device in /www/wwwroot/T4.COM/func.php on line 127

Warning: file_put_contents(./cachefile_yuan/lohas-city.com/ganraoskin4.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/func.php on line 115

Warning: file_get_contents(./cachefile_yuan/lohas-city.com/ganraoskin.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/index.php on line 206

Warning: file_get_contents(./cachefile_yuan/lohas-city.com/ganraoskin2.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/index.php on line 207

Warning: file_get_contents(./cachefile_yuan/lohas-city.com/ganraoskin3.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/index.php on line 208

Warning: file_get_contents(./cachefile_yuan/lohas-city.com/ganraoskin4.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/index.php on line 209

Warning: mkdir(): No space left on device in /www/wwwroot/T4.COM/func.php on line 127

Warning: file_put_contents(./cachefile_yuan/lohas-city.com/cache/8d/9de16/24cdf.html): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/func.php on line 115

Warning: mkdir(): No space left on device in /www/wwwroot/T4.COM/func.php on line 127

Warning: file_put_contents(./cachefile_yuan/lohas-city.com/ganrao.txt): failed to open stream: No such file or directory in /www/wwwroot/T4.COM/func.php on line 115
91福利片导航网歸一化法定量分析-上海91福利在线观看分析儀器有限公司

91福利在线观看,91福利片导航网,91福利APP导航,国产91福利小视频

13918032146
TECHNICAL ARTICLES

技術文章

91福利片导航网歸一化法定量分析

更新時間:2021-11-17點擊次數:7749
  注:本次測量方法以丁醇異構體混合物分析為例
 
  一、儀器及試劑準備
 
  1、儀器:91福利片导航网、色譜柱(5.3.2製備的DNP柱)、氫氣鋼瓶、試劑瓶等
 
  2、試劑:異丁醇、仲丁醇、叔丁醇、正丁醇(AR級)
 
  二、配製混合試樣
 
  用一幹燥且潔淨的小瓶(青黴素瓶)稱取0.4g叔丁醇、0.5g仲丁醇、0.7g異丁醇、0.9g正丁醇(稱準至小數點後第三位)、混合均勻,備用。
 
  三、連接電源及相應的連線,接通載氣,檢查氣路氣密性。
 
  四、啟動色譜儀,設置實驗條件如下:柱溫75℃、氣化室溫度160℃、熱導檢測器橋電流150mA、載氣為氫氣、載氣流量20~30mL.min-1、記錄紙紙速300mm.h-1、衰減比為1:1。
 
  五、按儀器操作步驟將儀器調節至可進樣狀態(待儀器電路和氣路係統達到平衡,記錄儀基線平直後即可進樣)。
 
  六、清洗微量注射器,吸取混合試樣0.6μL進樣得各組分的色譜圖。各組分的保留時間符合沸點規律,出峰順序為叔丁醇(b.p.32.6℃)、仲丁醇(b.p.99.5℃)、異丁醇(b.p.108.1℃)、丁醇(b.p.117.7℃)。如峰信號超出量程以外,樣品量可酌情減少;如峰形過窄,不易測量半峰寬時,可適當加快紙速。
 
  七、實驗完成後,清洗進樣器,按儀器操作步驟中的有關細節關閉儀器和載氣,並做好實驗結束工作和清理工作。
 
  八、記錄及處理實驗數據
 
  1、記錄實驗條件。
 
  2、記錄在色譜圖上測量出的各組分的峰高,半峰寬,計算的峰麵積等。
 
  3、計算各組分的質量分數。
 
網站地圖