一、按儀器使用說明書的規程操作
zheyidianzhuyaoshizhenduixingouzhiheanzhuangdeyiqi,bujinyaoqingdianlingbujianyubeijianshifouqiquan,gengyaojianzhashuomingshushifouqiquan,yidingyaotuoshanbaoguanzhexieziliao,yibeirihouzhayue。zaidulicaozuoyiqiqian,yidingyaorenzhenyueduyouguanshiyongshuomingshu,bingqieyangeanguichengcaozuo。zheshizuohaoyiqifenxideqianti,erqiedangyiqichuxianwentishiyefangbianyuchangshanggoutong。tebieshihaizaibaoxiuqideyiqi,ruguoyinweicaozuobudangchanshengdeguzhanghuozhesunhuai,changshangkeshibuhuimianfeiweixiude,youshizhebifeiyonghaishixiangdangkeguande。
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
石(shi)墨(mo)密(mi)封(feng)墊(dian)漏(lou)氣(qi)是(shi)氣(qi)相(xiang)色(se)譜(pu)常(chang)見(jian)的(de)故(gu)障(zhang)之(zhi)一(yi)。一(yi)定(ding)不(bu)能(neng)在(zai)不(bu)同(tong)的(de)色(se)譜(pu)柱(zhu)上(shang)重(zhong)複(fu)使(shi)用(yong)同(tong)一(yi)密(mi)封(feng)墊(dian),即(ji)使(shi)同(tong)一(yi)根(gen)柱(zhu)子(zi)卸(xie)下(xia)重(zhong)新(xin)安(an)裝(zhuang)時(shi),最(zui)好(hao)也(ye)要(yao)更(geng)換(huan)新(xin)的(de)密(mi)封(feng)墊(dian),這(zhe)樣(yang)能(neng)保(bao)證(zheng)更(geng)高(gao)的(de)工(gong)作(zuo)效(xiao)率(lv)。如(ru)果(guo)裝(zhuang)上(shang)色(se)譜(pu)柱(zhu)後(hou)發(fa)現(xian)漏(lou)氣(qi)而(er)再(zai)更(geng)換(huan)密(mi)封(feng)墊(dian)則(ze)會(hui)浪(lang)費(fei)更(geng)多(duo)的(de)時(shi)間(jian)。即(ji)使(shi)舊(jiu)的(de)密(mi)封(feng)墊(dian)可(ke)以(yi)使(shi)用(yong),也(ye)需(xu)要(yao)比(bi)新(xin)的(de)多(duo)擰(ning)緊(jin)些(xie),容(rong)易(yi)擰(ning)斷(duan)色(se)譜(pu)柱(zhu)。
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
裝zhuang在zai氣qi體ti鋼gang瓶ping上shang的de減jian壓ya閥fa要yao保bao證zheng質zhi量liang。有you些xie新xin閥fa就jiu會hui存cun在zai漏lou氣qi的de情qing況kuang,所suo以yi需xu要yao經jing常chang檢jian漏lou,隨sui時shi發fa現xian問wen題ti。如ru果guo不bu注zhu意yi輕qing則ze造zao成cheng氣qi體ti浪lang費fei,重zhong則ze會hui出chu現xian安an全quan問wen題ti,後hou果guo不bu堪kan設she想xiang。
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),更(geng)要(yao)徹(che)底(di)清(qing)洗(xi),否(fou)則(ze)殘(can)留(liu)在(zai)其(qi)中(zhong)的(de)樣(yang)品(pin)可(ke)能(neng)將(jiang)針(zhen)芯(xin)粘(zhan)住(zhu),造(zao)成(cheng)注(zhu)射(she)器(qi)的(de)報(bao)廢(fei)。使(shi)用(yong)自(zi)動(dong)進(jin)樣(yang)器(qi)時(shi)也(ye)要(yao)注(zhu)意(yi)此(ci)問(wen)題(ti),最(zui)好(hao)經(jing)常(chang)更(geng)換(huan)和(he)清(qing)洗(xi)注(zhu)射(she)器(qi)。
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),zhexiedouhuiganraofenxidezhengchangjinxing。yinciyaodingqijianzha,jishiqingxi。zhidezhuyideshi,xianzaidechenguanzhongyijingtianchongleyixiejingguiwanhuachuliguodeshiyingbolimao,jikeyitigaoyangpindeqihuaxiaolv,younengfangzhigediansuixiejinrusepuzhuzaochengdusai,yekeyigenjushijixuyaogenghuanhuozhezengjianbolimao,yiqidadaogenghaodexiaoguo。
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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