毛細管色譜柱安裝步驟如下: 步驟1:檢查氣體過濾器、載氣、jinyangdianhechenguandengjianzhajinyangdianheqitiguolvqi,baozhengfuzhuqihejianceqiyongqitongchangyouxiao。ruguoyiqianzuoguofeidianjiaogaodehuahewu,xuyaojiangjinyangkouchenguanqingxihuogenghuan。buzhou2:jiangluomuhekataozhuangzaizhushang,bingjiangsepuzhuliangduankouxiaoxinqiepingzaisepuzhudeyiduanzhuangshangxiangyingdeluomuhekatao,cishisepuzhuduankouwuqianhouzhifen,sepuzhuzhijiadezhichengbufenyingzongshichaoxiangzhezhuxiangmen。anzhuanghaoluomuhekataohou,jiangsepuzhuduankouqieping,bingyongfangdajingjinxingjianzha,yiquerenqiekouheguanbichengzhijiao,bingqiemeiyoucanliudesuixie,meiyoumaobianhuobupingdeqiegemian。buzhou3:jiangsepuzhulianyujinyangkoushangtongchanglaishuo,sepuzhudedingduanyingbaochizaijinyangkouchenguandezhongxiabu,dangjinyangzhenchuanguogedianwanquancharujinyangkouhou,ruguozhenjianyuchenguanzhongdesepuzhudingduanxiangcha1-2cm,這就是較為理想的狀態。從色譜柱架上取出需要連接的足夠的長度,並按步驟2切(qie)割(ge)柱(zhu)子(zi),連(lian)接(jie)到(dao)進(jin)樣(yang)口(kou)。避(bi)免(mian)用(yong)力(li)彎(wan)曲(qu)壓(ya)擠(ji)毛(mao)細(xi)柱(zhu),並(bing)小(xiao)心(xin)不(bu)要(yao)讓(rang)標(biao)記(ji)牌(pai)等(deng)有(you)鋒(feng)利(li)邊(bian)緣(yuan)的(de)物(wu)品(pin)與(yu)色(se)譜(pu)柱(zhu)接(jie)觸(chu)磨(mo)擦(ca),以(yi)防(fang)柱(zhu)身(shen)斷(duan)裂(lie)或(huo)受(shou)損(sun)。將(jiang)色(se)譜(pu)柱(zhu)正(zheng)確(que)地(di)嵌(qian)入(ru)進(jin)樣(yang)口(kou)後(hou),用(yong)手(shou)把(ba)連(lian)接(jie)螺(luo)母(mu)擰(ning)上(shang),用(yong)手(shou)擰(ning)緊(jin)後(hou)用(yong)扳(ban)手(shou)再(zai)擰(ning)1/4-1/2圈。步驟4:接通載氣載氣必須為高純氮氣(或氦氣),純度達99.999%,使用極性柱時(如FFAP、PEG-20M等),最(zui)好(hao)載(zai)氣(qi)加(jia)脫(tuo)氧(yang)管(guan)進(jin)一(yi)步(bu)脫(tuo)氧(yang),這(zhe)樣(yang)可(ke)延(yan)長(chang)柱(zhu)子(zi)的(de)使(shi)用(yong)壽(shou)命(ming)。當(dang)色(se)譜(pu)柱(zhu)與(yu)進(jin)樣(yang)口(kou)連(lian)接(jie)好(hao)後(hou),接(jie)通(tong)載(zai)氣(qi)。調(tiao)節(jie)柱(zhu)前(qian)壓(ya)力(li)以(yi)得(de)到(dao)合(he)適(shi)的(de)載(zai)氣(qi)流(liu)速(su)。將(jiang)色(se)譜(pu)柱(zhu)的(de)另(ling)一(yi)端(duan)(空端),插(cha)入(ru)裝(zhuang)有(you)己(ji)烷(wan)的(de)樣(yang)品(pin)瓶(ping)中(zhong),正(zheng)常(chang)情(qing)況(kuang)下(xia),我(wo)們(men)可(ke)以(yi)看(kan)見(jian)瓶(ping)中(zhong)穩(wen)定(ding)持(chi)續(xu)的(de)氣(qi)泡(pao)。如(ru)果(guo)沒(mei)有(you)氣(qi)泡(pao),就(jiu)要(yao)重(zhong)新(xin)檢(jian)查(zha)一(yi)下(xia)載(zai)氣(qi)裝(zhuang)置(zhi)和(he)流(liu)量(liang)控(kong)製(zhi)器(qi)等(deng)是(shi)否(fou)安(an)裝(zhuang)完(wan)全(quan)或(huo)設(she)置(zhi)正(zheng)確(que),並(bing)檢(jian)測(ce)一(yi)下(xia)整(zheng)個(ge)氣(qi)路(lu)有(you)無(wu)泄(xie)漏(lou)。等(deng)所(suo)有(you)問(wen)題(ti)解(jie)決(jue)後(hou),將(jiang)色(se)譜(pu)柱(zhu)端(duan)口(kou)從(cong)瓶(ping)中(zhong)取(qu)出(chu),擦(ca)試(shi)幹(gan)淨(jing),保(bao)證(zheng)柱(zhu)端(duan)口(kou)無(wu)溶(rong)劑(ji)殘(can)留(liu),再(zai)進(jin)行(xing)下(xia)一(yi)步(bu)安(an)裝(zhuang)。毛(mao)細(xi)管(guan)柱(zhu)前(qian)壓(ya)參(can)考(kao)設(she)置(zhi)(Mpa)柱長 m 柱內徑(mm) 0.25 0.32 0.53 15 0.05 0.04 0.02 30 0.1 0.08 0.03 50 0.18 0.14 0.05 步驟5:將色譜柱連於檢測器上其安裝和所需注意的事項與以上色譜柱與進樣口聯接(步驟3)部分所講述的大致相同。安裝時要注意色譜柱末端要高於尾吹點,或按照色譜儀說明書安裝。步驟6:進行氣體檢漏在色譜柱加熱前,要對GC係統進行檢漏。建議使用1∶1的異丙醇/水的混合溶液進行檢查。步驟7:色譜柱的老化色譜柱安裝和係統檢漏工作完成後,就可以對色譜柱進行老化了。將色譜柱程序升溫至最高使用溫度的30℃以下,恒溫30分鍾。這樣柱子內吸附的組份會被吹出,以免影響您的分析。最後,將色譜柱的溫度降低至所需要的溫度,即可進行實際樣品的分析。
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