| 5 | 3/1 | 返回列表 |
| 查看: 1953 | 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 ] |
銀蟲 (初入文壇)
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] 311求調(diào)劑 +6 | 26研0 2026-03-15 | 6/300 |
|
|---|---|---|---|---|
|
[考研] 070300化學(xué)319求調(diào)劑 +6 | 錦鯉0909 2026-03-17 | 6/300 |
|
|
[考研] 一志愿天津大學(xué)化學(xué)工藝專業(yè)(081702)315分求調(diào)劑 +9 | yangfz 2026-03-17 | 9/450 |
|
|
[考研] 材料,紡織,生物(0856、0710),化學(xué)招生啦 +3 | Eember. 2026-03-17 | 9/450 |
|
|
[考博] 26博士申請(qǐng) +3 | 1042136743 2026-03-17 | 3/150 |
|
|
[基金申請(qǐng)] 被我言中:新模板不強(qiáng)調(diào)格式了,假專家開始管格式了 +4 | beefly 2026-03-14 | 4/200 |
|
|
[考研] 考研求調(diào)劑 +3 | 橘頌. 2026-03-17 | 4/200 |
|
|
[考研] 296求調(diào)劑 +5 | 大口吃飯 身體健 2026-03-13 | 5/250 |
|
|
[碩博家園] 湖北工業(yè)大學(xué) 生命科學(xué)與健康學(xué)院-課題組招收2026級(jí)食品/生物方向碩士 +3 | 1喜春8 2026-03-17 | 5/250 |
|
|
[考研] 293求調(diào)劑 +6 | 世界首富 2026-03-11 | 6/300 |
|
|
[考研] 一志愿蘇州大學(xué)材料工程(085601)專碩有科研經(jīng)歷三項(xiàng)國(guó)獎(jiǎng)兩個(gè)實(shí)用型專利一項(xiàng)省級(jí)立項(xiàng) +6 | 大火山小火山 2026-03-16 | 8/400 |
|
|
[考研] 278求調(diào)劑 +3 | Yy7400 2026-03-13 | 3/150 |
|
|
[基金申請(qǐng)] 國(guó)自科面上基金字體 +6 | iwuli 2026-03-12 | 7/350 |
|
|
[考研] 285求調(diào)劑 +6 | ytter 2026-03-12 | 6/300 |
|
|
[考研] 求老師收留調(diào)劑 +4 | jiang姜66 2026-03-14 | 5/250 |
|
|
[考研] 0856專碩279求調(diào)劑 +5 | 加油加油!? 2026-03-15 | 5/250 |
|
|
[考研] 266求調(diào)劑 +4 | 學(xué)員97LZgn 2026-03-13 | 4/200 |
|
|
[基金申請(qǐng)]
有必要更換申報(bào)口嗎
20+3
|
fannyamoy 2026-03-11 | 3/150 |
|
|
[考研] 290求調(diào)劑 +7 | ADT 2026-03-12 | 7/350 |
|
|
[考研] 081200-11408-276學(xué)碩求調(diào)劑 +3 | 崔wj 2026-03-12 | 4/200 |
|