毛細(xì)柱安裝快捷指南

Precolumn installation check list預(yù)檢查清單

1.Replace oxygen, moisture, and hydrocarbon traps as needed.

如有必要，替換掉除氧、除濕、除烴的捕集阱。

2.Check gas cylinder pressure to ensure that an adequate supply of carrier, makeup, and fuel gases is available. Minimum carrier gas purity percentages: helium 99.9995, hydrogen 99.9995.

檢查氣瓶壓力，確認(rèn)載氣、補(bǔ)充氣、可燃?xì)夂线m。載氣純度百分比zui小應(yīng)達(dá)到：氦氣，99.995；氫氣，99.995。

3.Clean the injector port, replace critical injection port seals, replace injection port liners, and change septa as needed.

清洗進(jìn)樣口，如有必要，更換密封墊，襯管，隔墊。

4.Check detector seals, and replace as necessary. Clean or replace detector jets as necessary.

檢查檢測(cè)器密封墊，如有必要就替換。如有必要清洗或替換檢測(cè)器噴嘴。

5.Carefully inspect the column for damage or breakage.

仔細(xì)檢查柱是否破損。

6.Gather the necessary installation tools: you will need a column cutter, column nuts, ferrules, a magnifying loop, and typewriter correction fluid.

收集必要的安裝工具：柱切割器、柱螺母、墊圈、放大鏡、打字機(jī)改正液。

Installing the column   安裝柱

1.Uncoil approximay 0.5m of tubing from the column basket at both ends of the column for injector and detector installation. Avoid sharp bends in the tubing.

從柱圈兩端各解開(kāi)約0.5米的柱，以便進(jìn)樣口和檢測(cè)器安裝。

2.Mount the column in the oven. Use the hanging bracket if available.

在柱箱中裝柱。如果可能的話，用柱懸掛架。

3.Install the column nut and Vespel or graphite ferrule at each column end; pull the nut and ferrule down the tubing approximay 5 cm

在柱兩端按裝螺母和Vespel或石墨墊。將螺母和墊圈順著柱拉下約5厘米。

4.Score the column. Use a light touch to score the column about 4 to 5 cm from each end.

切割柱。距柱每個(gè)尾端約4-5cm處輕劃一下。

5.Make a clean break. Grasp the column between the thumb and forefinger as close to the score point as possible. Gently pull and bend the column. The column should part easily. If the column doesn’t break easily, don’t force it! Score the column again in different place, and try for a clean break.

確保整齊的劃口。用拇指和食指抓住柱，離劃痕處越近越好。輕輕地彎曲柱。柱應(yīng)該很容易地折斷。如果柱不能折斷，不能強(qiáng)行用力。在不同的地方再割一次柱，嘗試獲是整齊地劃口。

6.Use a magnifying loop to inspect the cut. Make sure the cut is square across the tubing with no polyimide or glass fragments at the end of the tube.

用放大鏡檢查劃口。確認(rèn)劃口正交于柱，柱端沒(méi)有聚酰亞胺或石英碎片。

7.Install the column in the inlet. Check the GC manufacturer’s instrument manual for the correct insertion distance. Mark the correct distance on the column with typewriter correction fluid. Insert the column into the injector. Finger tighten the column nut until it starts to grab the column, and then tighten the nut an additional 1/4 to 1/2 turn so that the column can’t be pulled from the fitting when gentle pressure is applied.

在進(jìn)樣口裝柱。查閱GC生產(chǎn)商的儀器說(shuō)明書，以便獲取正確的安裝距離。用打字機(jī)改正液在柱子上標(biāo)識(shí)正確地距離。將柱插入進(jìn)樣口。用手?jǐn)Q緊柱螺母直至其開(kāi)始夾住柱子。再擰1/4-1/2圈，這樣輕輕拉動(dòng)時(shí)，柱子不會(huì)脫出來(lái)。

8.Turn on the carrier gas, and establish the proper flow rate. Set head pressure, split flow, and septum purge flow to appropriate levels. See Table B for nominal head pressure. If using a split/splitless inlet, check that the purge valve is ON.

接通載氣，調(diào)至合適地流速。設(shè)置相應(yīng)的柱頭壓、分流比、隔墊吹掃。常規(guī)地柱頭壓參考表B。如果使用分流/不分流進(jìn)樣口，檢查分流閥是否打開(kāi)。

9.Confirm carrier gas flow through the column. Immerse the end of the column in a vial of acetone and check bubbles.

確保載氣通過(guò)了柱子。將柱尾端入丙酮中檢查氣泡。

10. Install the column in