| 5 | 2/1 | 返回列表 |
| 查看: 1970 | 回復(fù): 24 | |||
| 當(dāng)前只顯示滿足指定條件的回帖,點(diǎn)擊這里查看本話題的所有回帖 | |||
夏天的娃金蟲 (小有名氣)
|
[求助]
氣相色譜測(cè)含有不揮發(fā)液體樣品中的揮發(fā)物質(zhì)含量時(shí)該如何處理?
|
||
|
大家好! 小蟲需要測(cè)液體樣品的濃度,組分是1個(gè)脂肪烴1個(gè)芳香烴再加上1個(gè)液態(tài)鹽。液態(tài)鹽高沸點(diǎn),300度也不氣化,不過我只需要知道2個(gè)烴的相對(duì)濃度,但是鹽流入GC柱子的話肯定會(huì)堵柱子呀! 但是在許多外文文獻(xiàn)都有使用GC去測(cè)我這種體系的含量,只是在色譜上加了別的東西處理一下,我搜搜了一下相關(guān)信息很少呢,好像有用“在線過濾器”,“預(yù)柱”,但是供應(yīng)信息很少,預(yù)柱一般是HPLC用的多。因此發(fā)帖請(qǐng)教大蟲有什么東西能使GC處理我這樣的體系呢?另外文獻(xiàn)里說的的trap和預(yù)柱一般貴么。。5000以上怕是老師不大同意了。。。 附上文獻(xiàn)里說的預(yù)處理使用的東西: 1.For the samples, the whole of the 不揮發(fā)鹽 was retained by aSample Textlocated between the injector and the chromatographic column. In this way, the result of the analysis was not affected by the presence of 鹽, as we were able to verify experimentally.The trap was periodically cleaned to prevent the IL from coming into the column. 2.The amount of 鹽 could not be analyzed via gas chromatography, because of the negligible vapor pressure of 鹽; The 鹽 was collected in a precolumn (cup linear), to avoid contamination of the analytical column. 謝謝呀謝謝。 ![]() [ Last edited by 夏天的娃 on 2012-8-28 at 18:41 ] |
木蟲 (職業(yè)作家)
專家顧問 (知名作家)
![]() |
專家經(jīng)驗(yàn): +1438 |
金蟲 (小有名氣)
木蟲 (小有名氣)

| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 085600 286分 材料求調(diào)劑 +8 | 麻辣魷魚 2026-03-27 | 9/450 |
|
|---|---|---|---|---|
|
[考研] 070300化學(xué)354求調(diào)劑 +6 | 101次希望 2026-03-28 | 6/300 |
|
|
[考研] 318一志愿吉林大學(xué)生物與醫(yī)藥 求調(diào)劑 +4 | 篤行致遠(yuǎn). 2026-03-28 | 4/200 |
|
|
[考研] 壓國(guó)家一區(qū)線,求導(dǎo)師收留,有恩必謝! +7 | 迷人的哈哈 2026-03-28 | 7/350 |
|
|
[考研] 一志愿中南大學(xué)化學(xué)0703總分337求調(diào)劑 +5 | niko- 2026-03-27 | 5/250 |
|
|
[考研] 求化學(xué)調(diào)劑 +4 | wulanna 2026-03-28 | 4/200 |
|
|
[考研] 277跪求調(diào)劑 +5 | 1915668 2026-03-27 | 9/450 |
|
|
[考研] 328求調(diào)劑 +7 | 嗯滴的基本都 2026-03-27 | 7/350 |
|
|
[考研] 086000調(diào)劑 +3 | 7901117076 2026-03-26 | 3/150 |
|
|
[考研] 285求調(diào)劑 +4 | AZMK 2026-03-27 | 7/350 |
|
|
[考研] 308求調(diào)劑 +7 | 墨墨漠 2026-03-25 | 7/350 |
|
|
[考研] 一志愿華東理工大學(xué)081700,初試分?jǐn)?shù)271 +6 | kotoko_ik 2026-03-23 | 7/350 |
|
|
[考研] 求調(diào)劑323材料與化工 +7 | 1124361 2026-03-24 | 7/350 |
|
|
[考研] 325求調(diào)劑 +5 | 李嘉圖·S·路 2026-03-23 | 5/250 |
|
|
[考研] 總分322求生物學(xué)/生化與分子/生物信息學(xué)相關(guān)調(diào)劑 +5 | 星沉uu 2026-03-26 | 6/300 |
|
|
[考研] 機(jī)械學(xué)碩總分317求調(diào)劑。。! +4 | Acaciad 2026-03-25 | 4/200 |
|
|
[考研] 求調(diào)劑 +3 | 李李不服輸 2026-03-25 | 3/150 |
|
|
[考研] 282求調(diào)劑 +3 | wcq131415 2026-03-24 | 3/150 |
|
|
[考研] 269求調(diào)劑 +4 | 我想讀研11 2026-03-23 | 4/200 |
|
|
[考研] 280分求調(diào)劑 一志愿085802 +4 | PUMPT 2026-03-22 | 7/350 |
|