石墨爐使用注意問題及維護
儀器的使用
一(yi)般(ban)的(de)儀(yi)器(qi)說(shuo)明(ming)書(shu)上(shang)麵(mian)有(you)的(de)常(chang)規(gui)步(bu)驟(zhou)就(jiu)不(bu)多(duo)數(shu)了(le),大(da)家(jia)知(zhi)道(dao),儀(yi)器(qi)狀(zhuang)態(tai)正(zheng)常(chang)是(shi)取(qu)得(de)準(zhun)確(que)數(shu)據(ju)的(de)先(xian)決(jue)條(tiao)件(jian),但(dan)是(shi)有(you)時(shi)儀(yi)器(qi)自(zi)檢(jian)也(ye)許(xu)是(shi)已(yi)經(jing)通(tong)過(guo)了(le),但(dan)是(shi)有(you)些(xie)儀(yi)器(qi)部(bu)分(fen)還(hai)是(shi)需(xu)要(yao)大(da)家(jia)來(lai)檢(jian)查(zha):
1、光譜儀部分:看燈的負高壓是否處於正常範圍(一般是450~650v),如ru果guo突tu然ran發fa現xian負fu高gao壓ya特te高gao,估gu計ji你ni就jiu要yao檢jian查zha光guang路lu了le,看kan是shi否fou有you異yi物wu擋dang住zhu了le光guang路lu,鏡jing片pian是shi否fou有you起qi霧wu結jie冰bing。此ci時shi,就jiu需xu要yao用yong擦ca鏡jing紙zhi或huo者zhe吹chui風feng機ji吹chui幹gan,同tong時shi檢jian查zha環huan境jing溫wen濕shi度du是shi否fou達da標biao。
2、自動進樣器:shouxian,guanchazidongjinyangqiguanlushifouchuxianyichang,youshiyigewanshanghuozheshigengjiushijianbuyong,rongyehuizaizidongjinyangqidemaoxiguanzhongzhengfajiejing,daozhizidongjinyangqidusai,huozheshiguanlubuliuchang。cishi,zaiqingxiguochengzhong,yiqimaoxiguanchushuididesuduhuihenman。huozheshixishuiyehuiyouyanchixianxiang。kanshifounenggouzhunquedijiangrongyezhurudaoshimoguanzhong,tongshiyeyaozhuyijianzhaqingxijinyangmaoxiguan,shifouguashuizhu,ruguoyou,keyiyongjiujinghuozheshixixiaosuancaxi。jiezhe,jianzhalengquexunhuanshui,kanyalishifouzaixukefanweizhinei。
儀器維護
正確的儀器使用方法和及時的儀器維護是延長儀器壽命、保證儀器正常運轉的有效途徑之一。
石墨爐的維護在石墨爐膛部分,因為裏麵是加熱高溫-低di溫wen冷leng卻que一yi個ge循xun環huan過guo程cheng。同tong時shi,裏li麵mian還hai有you還hai原yuan性xing強qiang的de石shi墨mo產chan生sheng積ji碳tan,此ci外wai還hai有you不bu同tong的de待dai測ce物wu質zhi灰hui化hua時shi產chan生sheng的de煙yan霧wu,這zhe些xie都dou會hui在zai爐lu膛tang或huo者zhe是shi爐lu膛tang光guang路lu上shang的de透tou鏡jing附fu近jin凝ning結jie。如ru果guo長chang時shi間jian不bu清qing理li,爐lu膛tang底di部bu的de光guang控kong溫wen鏡jing可ke能neng會hui因yin為wei積ji碳tan的de幹gan擾rao,失shi去qu控kong溫wen能neng力li,導dao致zhi石shi墨mo管guan燒shao斷duan。
自動進樣器也是維護的重點對象,石墨爐報出數據的精密度低,跟進樣量少(10~30uL)youhendaguanxi。qizhongdemaoxiguandaochangnianyongzhengliushuizuoweiqingxiye,nanmianhuiyoukongqihuichenjinrubingzaiguanluguaiwanchujijie。rijiyuelei,ruguoyouyitianfaxianzidongjinyangqixiyanghuoqingxishichuxianleyaliyanchi,kenengjiushiciyuanyinle。
同(tong)時(shi),如(ru)果(guo)長(chang)久(jiu)不(bu)用(yong),儀(yi)器(qi)可(ke)能(neng)會(hui)長(chang)出(chu)青(qing)苔(tai)。定(ding)時(shi)用(yong)稀(xi)硝(xiao)酸(suan)清(qing)洗(xi)是(shi)最(zui)好(hao)的(de)選(xuan)擇(ze),但(dan)是(shi)清(qing)洗(xi)完(wan)畢(bi)記(ji)得(de)在(zai)用(yong)蒸(zheng)餾(liu)水(shui)清(qing)洗(xi)管(guan)路(lu),因(yin)為(wei)裏(li)麵(mian)的(de)注(zhu)射(she)器(qi)活(huo)塞(sai)式(shi)金(jin)屬(shu)質(zhi)地(di)的(de)。
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