一、按儀器使用說明書的規程操作
這zhe一yi點dian主zhu要yao是shi針zhen對dui新xin購gou置zhi和he安an裝zhuang的de儀yi器qi,不bu僅jin要yao清qing點dian零ling部bu件jian與yu備bei件jian是shi否fou齊qi全quan,更geng要yao檢jian查zha說shuo明ming書shu是shi否fou齊qi全quan,一yi定ding要yao妥tuo善shan保bao管guan這zhe些xie資zi料liao,以yi備bei日ri後hou查zha閱yue。在zai獨du立li操cao作zuo儀yi器qi前qian,一yi定ding要yao認ren真zhen閱yue讀du有you關guan使shi用yong說shuo明ming書shu,並bing且qie嚴yan格ge按an規gui程cheng操cao作zuo。這zhe是shi做zuo好hao儀yi器qi分fen析xi的de前qian提ti,而er且qie當dang儀yi器qi出chu現xian問wen題ti時shi也ye方fang便bian與yu廠chang商shang溝gou通tong。特te別bie是shi還hai在zai保bao修xiu期qi的de儀yi器qi,如ru果guo因yin為wei操cao作zuo不bu當dang產chan生sheng的de故gu障zhang或huo者zhe損sun壞huai,廠chang商shang可ke是shi不bu會hui免mian費fei維wei修xiu的de,有you時shi這zhe筆bi費fei用yong還hai是shi相xiang當dang客ke觀guan的de。
二、準備一份色譜柱的測試標樣
色(se)譜(pu)柱(zhu)性(xing)能(neng)是(shi)保(bao)證(zheng)分(fen)析(xi)結(jie)果(guo)的(de)關(guan)鍵(jian)。新(xin)購(gou)置(zhi)的(de)色(se)譜(pu)柱(zhu),首(shou)先(xian)要(yao)用(yong)測(ce)試(shi)樣(yang)來(lai)評(ping)價(jia)其(qi)性(xing)能(neng),如(ru)果(guo)采(cai)用(yong)色(se)譜(pu)柱(zhu)廠(chang)商(shang)提(ti)供(gong)的(de)測(ce)試(shi)條(tiao)件(jian)而(er)結(jie)果(guo)不(bu)合(he)格(ge)時(shi),可(ke)以(yi)要(yao)求(qiu)退(tui)換(huan)貨(huo),以(yi)免(mian)造(zao)成(cheng)後(hou)續(xu)實(shi)驗(yan)的(de)問(wen)題(ti)。更(geng)重(zhong)要(yao)的(de)是(shi),之(zhi)後(hou)使(shi)用(yong)過(guo)程(cheng)中(zhong)色(se)譜(pu)柱(zhu)的(de)性(xing)能(neng)會(hui)發(fa)生(sheng)變(bian)化(hua),當(dang)分(fen)析(xi)結(jie)果(guo)出(chu)現(xian)問(wen)題(ti)時(shi),可(ke)以(yi)用(yong)測(ce)試(shi)樣(yang)測(ce)試(shi)色(se)譜(pu)柱(zhu),並(bing)與(yu)之(zhi)前(qian)結(jie)果(guo)進(jin)行(xing)比(bi)對(dui),這(zhe)樣(yang)有(you)助(zhu)於(yu)問(wen)題(ti)的(de)排(pai)查(zha),以(yi)確(que)定(ding)問(wen)題(ti)是(shi)否(fou)是(shi)因(yin)為(wei)色(se)譜(pu)柱(zhu)造(zao)成(cheng)的(de)。每(mei)次(ci)測(ce)試(shi)結(jie)果(guo)都(dou)應(ying)該(gai)保(bao)存(cun)起(qi)來(lai)作(zuo)為(wei)色(se)譜(pu)柱(zhu)的(de)壽(shou)命(ming)記(ji)錄(lu)。另(ling)外(wai),進(jin)行(xing)一(yi)段(duan)時(shi)間(jian)的(de)試(shi)驗(yan)之(zhi)後(hou),應(ying)該(gai)對(dui)色(se)譜(pu)柱(zhu)進(jin)行(xing)一(yi)次(ci)高(gao)溫(wen)老(lao)化(hua),以(yi)除(chu)去(qu)柱(zhu)內(nei)可(ke)能(neng)殘(can)留(liu)的(de)汙(wu)染(ran)物(wu),然(ran)後(hou)用(yong)測(ce)試(shi)樣(yang)再(zai)次(ci)評(ping)價(jia)色(se)譜(pu)柱(zhu)。
三、及時更換毛細管色譜柱密封墊
shimomifengdianlouqishiqixiangsepuchangjiandeguzhangzhiyi。yidingbunengzaibutongdesepuzhushangzhongfushiyongtongyimifengdian,jishitongyigenzhuzixiexiazhongxinanzhuangshi,zuihaoyeyaogenghuanxindemifengdian,zheyangnengbaozhenggenggaodegongzuoxiaolv。ruguozhuangshangsepuzhuhoufaxianlouqierzaigenghuanmifengdianzehuilangfeigengduodeshijian。jishijiudemifengdiankeyishiyong,yexuyaobixindeduoningjinxie,rongyiningduansepuzhu。
四、使用純度符合要求的氣體
載(zai)氣(qi)一(yi)定(ding)要(yao)是(shi)高(gao)純(chun)級(ji)的(de),以(yi)避(bi)免(mian)幹(gan)擾(rao)分(fen)析(xi)和(he)汙(wu)染(ran)色(se)譜(pu)柱(zhu)或(huo)檢(jian)測(ce)器(qi)。畢(bi)竟(jing)色(se)譜(pu)柱(zhu)的(de)價(jia)格(ge)是(shi)高(gao)純(chun)氮(dan)氣(qi)或(huo)者(zhe)氦(hai)氣(qi)的(de)十(shi)倍(bei)以(yi)上(shang),如(ru)果(guo)因(yin)為(wei)省(sheng)錢(qian)而(er)用(yong)普(pu)通(tong)氣(qi)體(ti)未(wei)免(mian)有(you)些(xie)得(de)不(bu)償(chang)失(shi)了(le)。檢(jian)測(ce)器(qi)的(de)輔(fu)助(zhu)氣(qi)體(ti)最(zui)好(hao)也(ye)用(yong)高(gao)純(chun)級(ji)的(de)。雖(sui)然(ran)在(zai)靈(ling)敏(min)度(du)要(yao)求(qiu)不(bu)高(gao)的(de)時(shi)候(hou)可(ke)以(yi)用(yong)普(pu)通(tong)氣(qi)體(ti),但(dan)代(dai)價(jia)很(hen)有(you)可(ke)能(neng)是(shi)造(zao)成(cheng)檢(jian)測(ce)器(qi)汙(wu)染(ran)。
五、定期更換氣體淨化器填料
變色矽膠可以根據顏色來判斷其性能,但分子篩等吸附有機物的淨化器就不好通過觀察來判斷了。所以最好是定期更換,基本以3個月為周期。如果矽膠與分子篩裝在一起,更換矽膠時也應該更換分子篩。
六、使用性能可靠的壓力調節閥
zhuangzaiqitigangpingshangdejianyafayaobaozhengzhiliang。youxiexinfajiuhuicunzailouqideqingkuang,suoyixuyaojingchangjianlou,suishifaxianwenti。ruguobuzhuyiqingzezaochengqitilangfei,zhongzehuichuxiananquanwenti,houguobukanshexiang。
七、定期更換進樣口隔墊
jinyangkougedianlouqishiqixiangsepudechangjianguzhangzhiyi。youxieyiqiyouzijiangongnengkeyifaxianlouqi,danshiyouxieweixiaodelouqiwentiyeshibunengbaozhengfaxiande,gengyouxieyiqijiumeiyouzijiangongneng,louqijiugengshiwucongzhaqile。zengjingjiuyouGC-MS的初學者一夜之間漏完了一瓶氦氣,而且質譜圖上有一些含矽的離子峰。檢查各個管路、連lian接jie閥fa均jun未wei發fa現xian問wen題ti,最zui後hou才cai發fa現xian是shi進jin樣yang口kou隔ge墊dian使shi用yong太tai久jiu,中zhong間jian竟jing然ran已yi經jing出chu現xian了le透tou光guang孔kong,氦hai氣qi就jiu是shi從cong這zhe裏li漏lou光guang的de。此ci外wai,隔ge墊dian老lao化hua降jiang解jie也ye會hui造zao成cheng分fen析xi結jie果guo的de幹gan擾rao,比bi如ru隔ge墊dian碎sui屑xie就jiu會hui掉diao進jin汽qi化hua室shi造zao成cheng鬼gui峰feng的de出chu現xian,就jiu如ru上shang麵mian所suo說shuo的de含han矽gui的de離li子zi峰feng。
市售的隔墊一般分為三種類型,普通型(可耐溫至200℃)、優質型(可耐溫至300℃)和高溫型(可耐溫至400℃)。耐高溫或抗老化性能越好、壽命越長,價格當然也就也就越高。選擇時可以根據實際分析條件和需求決定,常規分析實驗室(汽化溫度不超過300℃)選(xuan)擇(ze)優(you)質(zhi)型(xing)的(de)隔(ge)墊(dian)就(jiu)可(ke)以(yi)了(le),做(zuo)高(gao)溫(wen)氣(qi)相(xiang)分(fen)析(xi)時(shi)最(zui)好(hao)選(xuan)取(qu)高(gao)溫(wen)型(xing)隔(ge)墊(dian)。至(zhi)於(yu)多(duo)久(jiu)更(geng)換(huan)一(yi)次(ci)隔(ge)墊(dian)則(ze)需(xu)要(yao)看(kan)分(fen)析(xi)樣(yang)品(pin)的(de)性(xing)質(zhi)和(he)分(fen)析(xi)條(tiao)件(jian)了(le)。常(chang)規(gui)檢(jian)測(ce)性(xing)實(shi)驗(yan)室(shi)一(yi)般(ban)每(mei)天(tian)更(geng)換(huan)一(yi)個(ge)。一(yi)個(ge)隔(ge)墊(dian)的(de)連(lian)續(xu)使(shi)用(yong)時(shi)間(jian)最(zui)好(hao)不(bu)要(yao)超(chao)過(guo)一(yi)周(zhou),當(dang)然(ran)對(dui)於(yu)經(jing)驗(yan)豐(feng)富(fu)的(de)“老司機”是可以憑經驗、手感之類的判斷是否需要更換的。
八、及時清洗注射器
幹gan淨jing的de注zhu射she器qi能neng避bi免mian樣yang品pin記ji憶yi效xiao應ying的de幹gan擾rao。更geng換huan樣yang品pin時shi需xu要yao清qing洗xi,用yong同tong一yi樣yang品pin多duo次ci進jin樣yang時shi也ye要yao用yong樣yang品pin本ben身shen清qing洗xi注zhu射she器qi。一yi支zhi注zhu射she器qi暫zan時shi不bu用yong時shi(比如放假時),gengyaochediqingxi,fouzecanliuzaiqizhongdeyangpinkenengjiangzhenxinzhanzhu,zaochengzhusheqidebaofei。shiyongzidongjinyangqishiyeyaozhuyiciwenti,zuihaojingchanggenghuanheqingxizhusheqi。
九、定期檢查並清洗進樣口襯管
儀器長期使用後會發現襯管內積存有焦油狀物質,這是樣品中的不揮發成分造成的。此外還會有顆粒狀物質積存(隔墊碎屑、樣品中的固體物質),這(zhe)些(xie)都(dou)會(hui)幹(gan)擾(rao)分(fen)析(xi)的(de)正(zheng)常(chang)進(jin)行(xing)。因(yin)此(ci)要(yao)定(ding)期(qi)檢(jian)查(zha),及(ji)時(shi)清(qing)洗(xi)。值(zhi)得(de)注(zhu)意(yi)的(de)是(shi),現(xian)在(zai)的(de)襯(chen)管(guan)中(zhong)已(yi)經(jing)填(tian)充(chong)了(le)一(yi)些(xie)經(jing)矽(gui)烷(wan)化(hua)處(chu)理(li)過(guo)的(de)石(shi)英(ying)玻(bo)璃(li)毛(mao),既(ji)可(ke)以(yi)提(ti)高(gao)樣(yang)品(pin)的(de)汽(qi)化(hua)效(xiao)率(lv),又(you)能(neng)防(fang)止(zhi)隔(ge)墊(dian)碎(sui)屑(xie)進(jin)入(ru)色(se)譜(pu)柱(zhu)造(zao)成(cheng)堵(du)塞(sai),也(ye)可(ke)以(yi)根(gen)據(ju)實(shi)際(ji)需(xu)要(yao)更(geng)換(huan)或(huo)者(zhe)增(zeng)減(jian)玻(bo)璃(li)毛(mao),以(yi)期(qi)達(da)到(dao)更(geng)好(hao)的(de)效(xiao)果(guo)。
十、保留完整的儀器使用記錄
儀器使用記錄是儀器的履曆,應逐日記錄,包括操作者、分析樣品、條件、儀yi器qi工gong作zuo狀zhuang態tai等deng,一yi旦dan儀yi器qi出chu現xian問wen題ti,這zhe是shi查zha找zhao原yuan因yin的de重zhong要yao資zi料liao。一yi些xie研yan究jiu性xing的de實shi驗yan室shi往wang往wang不bu太tai注zhu意yi儀yi器qi使shi用yong記ji錄lu的de填tian寫xie,這zhe是shi需xu要yao注zhu意yi的de問wen題ti。
十一、更換零部件要逐一進行
維wei修xiu儀yi器qi時shi,不bu要yao一yi次ci更geng換huan多duo個ge部bu件jian,這zhe要yao容rong易yi造zao成cheng故gu障zhang原yuan因yin的de判pan斷duan失shi誤wu。應ying該gai一yi次ci更geng換huan一yi個ge部bu件jian,經jing測ce試shi後hou再zai更geng換huan另ling一yi個ge。這zhe樣yang既ji可ke以yi更geng準zhun確que的de判pan斷duan故gu障zhang原yuan因yin,也ye能neng避bi免mian不bu必bi要yao的de開kai支zhi。
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