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作者 tony15899 在 PTT [ Chemistry ] 看板的留言(推文), 共460則
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2F→: 溶劑揮發又在密閉環境壓力過大就爆了03/19 20:19
8F→: 對專業人員幾乎沒有任何討論性的東西 當然平靜03/15 18:51
7F推: 幫你分析你會付錢嗎? 不會你就可以刪文了02/23 18:28
7F→: 石棉不是很早就禁用了?02/14 12:43
2F→: 濃度低於管制濃度就可以買(大概)01/21 18:54
4F推: 問題是空間小啊 重新隔間學校也要花錢01/18 19:59
17F→: 高度揮發藥品盡量在抽風櫃使用 大概就ok01/19 18:52
18F→: 真的怕就戴防毒面具或抗有機溶劑口罩 或是轉行01/19 18:52
1F推: 如果有氣泡也是要用正常流速或再高一點跑 低速氣泡只會01/14 01:10
2F→: 在機器裡面晃動 基線就不穩01/14 01:11
3F→: RI的purgr要記得打開01/14 01:11
4F→: purge01/14 01:11
1F推: 如果有用梯度流洗 要設一段平衡管柱的時間12/20 14:37
4F→: 如果你的流洗液組成在分析過程中會變動就是梯度流洗12/21 23:52
5F→: 比如從10%甲醇提升到最終90%甲醇 要打下一個樣品前12/21 23:52
6F→: 要回到10%甲醇一段時間平衡 管柱內才會是初始溶液濃度12/21 23:53
7F→: 一般250*4.6mm 流速1mL/min 這段平衡時間可設10分鐘12/21 23:55
8F→: 時間可減少或增加 總之重複分析時peak位置不會漂移就好12/21 23:56
1F→: 建議你問管柱銷售商 你的樣品會不會卡在管柱內出不來12/18 21:56
2F→: 如果你打標準品都完全正常,至少分析系統問題可以排除12/18 21:57
1F→: CNS 1484912/16 23:26
6F推: 就算用比色法也是要用儀器測12/17 18:54
7F→: 而且本身有顏色的酒可能沒辦法用12/17 18:54