1前言

大(da)氣(qi)(qi)中的(de)(de)(de)(de)(de)碳(tan)(tan)氫(qing)(qing)化(hua)(hua)(hua)(hua)(hua)(hua)合物(wu)(wu)通常是指(zhi)大(da)氣(qi)(qi)中可揮(hui)發(fa)的(de)(de)(de)(de)(de)碳(tan)(tan)氫(qing)(qing)化(hua)(hua)(hua)(hua)(hua)(hua)合物(wu)(wu)，也稱(cheng)為總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)，測量非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)的(de)(de)(de)(de)(de)儀(yi)器叫非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)測定儀(yi)，也叫非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)分析儀(yi)等。而(er)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)中又(you)分為甲(jia)(jia)(jia)烷(wan)(wan)和(he)非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)，甲(jia)(jia)(jia)烷(wan)(wan)（CH4）在大(da)氣(qi)(qi)中的(de)(de)(de)(de)(de)含(han)量大(da)約(yue)是1.4mg/m3，含(han)量遠低于二(er)氧(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)碳(tan)(tan)，但確是26%的(de)(de)(de)(de)(de)溫室效(xiao)應的(de)(de)(de)(de)(de)貢獻者，是二(er)氧(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)碳(tan)(tan)的(de)(de)(de)(de)(de)22倍。除了甲(jia)(jia)(jia)烷(wan)(wan)之外的(de)(de)(de)(de)(de)C2-C8的(de)(de)(de)(de)(de)碳(tan)(tan)氫(qing)(qing)化(hua)(hua)(hua)(hua)(hua)(hua)合物(wu)(wu)稱(cheng)之為非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)（NMHC），當非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)超過(guo)一定濃度時，會對人體健康產生(sheng)傷害(hai)，而(er)且在一定條件下(xia)經日光(guang)照射后會產生(sheng)光(guang)化(hua)(hua)(hua)(hua)(hua)(hua)學煙霧(wu)，產生(sheng)的(de)(de)(de)(de)(de)過(guo)氧(yang)(yang)乙(yi)硝酸酯和(he)醛類等對環境和(he)人類造成危害(hai)。非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)主(zhu)要來源于汽油燃燒(shao)、焚燒(shao)垃(la)圾、溶(rong)劑蒸發(fa)、廢物(wu)(wu)提(ti)煉等。我國《大(da)氣(qi)(qi)污(wu)染物(wu)(wu)綜(zong)合排放標(biao)準》（GB16927-1996）的(de)(de)(de)(de)(de)非(fei)甲(jia)(jia)(jia)烷(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)的(de)(de)(de)(de)(de)廠界濃度標(biao)準為5mg/m3。光(guang)化(hua)(hua)(hua)(hua)(hua)(hua)學煙霧(wu)的(de)(de)(de)(de)(de)形成主(zhu)要由大(da)氣(qi)(qi)中碳(tan)(tan)氫(qing)(qing)化(hua)(hua)(hua)(hua)(hua)(hua)合物(wu)(wu)、氮氧(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)物(wu)(wu)和(he)光(guang)氧(yang)(yang)化(hua)(hua)(hua)(hua)(hua)(hua)劑的(de)(de)(de)(de)(de)共(gong)同作用，控制(zhi)碳(tan)(tan)氫(qing)(qing)化(hua)(hua)(hua)(hua)(hua)(hua)合物(wu)(wu)是避免產生(sheng)光(guang)化(hua)(hua)(hua)(hua)(hua)(hua)學煙霧(wu)的(de)(de)(de)(de)(de)一個(ge)最有效(xiao)的(de)(de)(de)(de)(de)途徑。

2方法綜述

空(kong)(kong)氣(qi)(qi)(qi)(qi)和廢氣(qi)(qi)(qi)(qi)中(zhong)(zhong)的(de)非甲(jia)烷總烴的(de)分析(xi)測定(ding)(ding)方(fang)法(fa)一般是(shi)采(cai)(cai)用《空(kong)(kong)氣(qi)(qi)(qi)(qi)和廢氣(qi)(qi)(qi)(qi)監測分析(xi)方(fang)法(fa)》（第(di)四(si)版(ban)）中(zhong)(zhong)的(de)方(fang)法(fa)，即用氣(qi)(qi)(qi)(qi)相色譜儀(yi)以火焰離子化(hua)檢測器分別測定(ding)(ding)空(kong)(kong)氣(qi)(qi)(qi)(qi)中(zhong)(zhong)總烴及(ji)甲(jia)烷的(de)含量(liang)，兩者之差即為(wei)非甲(jia)烷總烴。以氮氣(qi)(qi)(qi)(qi)為(wei)載氣(qi)(qi)(qi)(qi)測定(ding)(ding)總烴時，總烴的(de)峰中(zhong)(zhong)包(bao)括氧(yang)峰，氣(qi)(qi)(qi)(qi)樣中(zhong)(zhong)的(de)氧(yang)產生正(zheng)干(gan)擾(rao)。在固定(ding)(ding)色譜條件下，一定(ding)(ding)量(liang)氧(yang)的(de)響(xiang)應值是(shi)固定(ding)(ding)的(de)。因此可以用凈化(hua)空(kong)(kong)氣(qi)(qi)(qi)(qi)求出空(kong)(kong)白值，從總烴峰中(zhong)(zhong)扣除，以消(xiao)除氧(yang)的(de)干(gan)擾(rao)。或者采(cai)(cai)用的(de)是(shi)HJ/T38-1999的(de)方(fang)法(fa)標準。

色譜(pu)儀(yi)是為進(jin)(jin)行色譜(pu)分(fen)(fen)離分(fen)(fen)析(xi)用的裝置，包括進(jin)(jin)樣(yang)(yang)系(xi)(xi)(xi)統(tong)、檢(jian)(jian)測系(xi)(xi)(xi)統(tong)、記錄和數據處理系(xi)(xi)(xi)統(tong)、溫(wen)控系(xi)(xi)(xi)統(tong)以及流動相控制系(xi)(xi)(xi)統(tong)等。其中氣相色譜(pu)儀(yi)是一種對混合(he)(he)氣體中各(ge)組(zu)(zu)分(fen)(fen)進(jin)(jin)行分(fen)(fen)析(xi)檢(jian)(jian)測的儀(yi)器。樣(yang)(yang)品(pin)由載氣帶入(ru)(ru)(ru)，通(tong)過對欲檢(jian)(jian)測混合(he)(he)物中組(zu)(zu)分(fen)(fen)有不同保留性能的色譜(pu)柱，使各(ge)組(zu)(zu)分(fen)(fen)分(fen)(fen)離，依次(ci)導入(ru)(ru)(ru)檢(jian)(jian)測器，以得到各(ge)組(zu)(zu)分(fen)(fen)的檢(jian)(jian)測信號(hao)。按照導入(ru)(ru)(ru)檢(jian)(jian)測器的先后次(ci)序，經過對比，可以區別出(chu)是什么組(zu)(zu)分(fen)(fen)，根據峰高度或峰面積可以計算出(chu)各(ge)組(zu)(zu)分(fen)(fen)含量(liang)。

趙(zhao)小敏等采用(yong)(yong)經典的(de)(de)(de)氣(qi)(qi)(qi)相(xiang)(xiang)色(se)譜法(fa)(fa)測(ce)(ce)定(ding)(ding)非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)烴(jing)(jing)(jing)(jing)。采用(yong)(yong)《空氣(qi)(qi)(qi)和(he)(he)廢(fei)氣(qi)(qi)(qi)監測(ce)(ce)分(fen)析(xi)(xi)方(fang)(fang)法(fa)(fa)（第四版(ban)）》P585～P587總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)和(he)(he)非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)測(ce)(ce)定(ding)(ding)方(fang)(fang)法(fa)(fa)一（B）利(li)用(yong)(yong)六通閥(fa)定(ding)(ding)量環(huan)進(jin)樣來(lai)測(ce)(ce)定(ding)(ding)環(huan)境(jing)空氣(qi)(qi)(qi)以及廢(fei)氣(qi)(qi)(qi)中(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)濃(nong)度(du)，對(dui)儀器條件進(jin)行(xing)優化(hua)，方(fang)(fang)法(fa)(fa)的(de)(de)(de)檢(jian)(jian)出限(xian)為(wei)(wei)0.13mg/m3，標(biao)(biao)(biao)樣總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)相(xiang)(xiang)對(dui)標(biao)(biao)(biao)準(zhun)偏差(cha)(cha)為(wei)(wei)0.4%，甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)的(de)(de)(de)相(xiang)(xiang)對(dui)標(biao)(biao)(biao)準(zhun)偏差(cha)(cha)為(wei)(wei)1.2%，總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)的(de)(de)(de)加(jia)標(biao)(biao)(biao)回(hui)收率為(wei)(wei)100.9%～101.6%，甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)的(de)(de)(de)加(jia)標(biao)(biao)(biao)回(hui)收率為(wei)(wei)102.4%～102.6%，該(gai)方(fang)(fang)法(fa)(fa)操作(zuo)簡單(dan)，分(fen)析(xi)(xi)速度(du)快(kuai)，實(shi)驗(yan)結(jie)果滿意。林琳(lin)等采用(yong)(yong)六通閥(fa)進(jin)樣，雙毛細(xi)管柱(zhu)、雙FID檢(jian)(jian)測(ce)(ce)器氣(qi)(qi)(qi)相(xiang)(xiang)色(se)譜法(fa)(fa)，一次進(jin)樣即可(ke)測(ce)(ce)得(de)大(da)氣(qi)(qi)(qi)中(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)、總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)及非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)的(de)(de)(de)測(ce)(ce)試(shi)數據。同時對(dui)色(se)譜中(zhong)(zhong)(zhong)(zhong)FID檢(jian)(jian)測(ce)(ce)器中(zhong)(zhong)(zhong)(zhong)出現(xian)(xian)的(de)(de)(de)氧峰(feng)初步可(ke)認定(ding)(ding)為(wei)(wei)“干擾峰(feng)”，在分(fen)析(xi)(xi)中(zhong)(zhong)(zhong)(zhong)可(ke)忽略不計。方(fang)(fang)法(fa)(fa)的(de)(de)(de)檢(jian)(jian)出限(xian)：甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)0.03mg/m3，總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)0.04mg/m3，非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)0.06mg/m3。加(jia)標(biao)(biao)(biao)回(hui)收率：甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)96.1%，非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)96.1%～98%。潘金芳等在《化(hua)工環(huan)保》上發表(biao)的(de)(de)(de)文(wen)章(zhang)(zhang)中(zhong)(zhong)(zhong)(zhong)介紹了用(yong)(yong)雙柱(zhu)雙氫(qing)焰(yan)離子化(hua)檢(jian)(jian)測(ce)(ce)器氣(qi)(qi)(qi)相(xiang)(xiang)色(se)譜法(fa)(fa)分(fen)析(xi)(xi)氣(qi)(qi)(qi)體樣品(pin)中(zhong)(zhong)(zhong)(zhong)非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)烴(jing)(jing)(jing)(jing)。方(fang)(fang)法(fa)(fa)的(de)(de)(de)檢(jian)(jian)出限(xian)為(wei)(wei)0.035mg/m3，測(ce)(ce)定(ding)(ding)范圍為(wei)(wei)0.12～8.0mg/m3。5個(ge)實(shi)驗(yan)室(shi)的(de)(de)(de)驗(yan)證實(shi)驗(yan)結(jie)果表(biao)明，相(xiang)(xiang)對(dui)標(biao)(biao)(biao)準(zhun)偏差(cha)(cha)為(wei)(wei)3.4%～9.2%，回(hui)收率為(wei)(wei)88.6%～114%。黃文(wen)鑫等用(yong)(yong)玻璃注射器（氣(qi)(qi)(qi)袋(dai)）采集(ji)氣(qi)(qi)(qi)體樣品(pin)，以雙柱(zhu)單(dan)氫(qing)火焰(yan)離子化(hua)檢(jian)(jian)測(ce)(ce)器的(de)(de)(de)氣(qi)(qi)(qi)相(xiang)(xiang)色(se)譜儀直接(jie)進(jin)行(xing)測(ce)(ce)定(ding)(ding)。進(jin)樣1.0mL樣品(pin)分(fen)別進(jin)入汽化(hua)室(shi)的(de)(de)(de)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)柱(zhu)和(he)(he)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)柱(zhu)中(zhong)(zhong)(zhong)(zhong)，由于(yu)這兩(liang)個(ge)柱(zhu)子填充材料和(he)(he)長(chang)短(duan)差(cha)(cha)異(yi)，總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)先在FID上產(chan)生(sheng)響應，然后甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)在FID上產(chan)生(sheng)響應。總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)的(de)(de)(de)濃(nong)度(du)扣(kou)除(chu)(chu)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)濃(nong)度(du)和(he)(he)除(chu)(chu)烴(jing)(jing)(jing)(jing)空氣(qi)(qi)(qi)氧的(de)(de)(de)濃(nong)度(du)值，即可(ke)得(de)到非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)的(de)(de)(de)濃(nong)度(du)，可(ke)以實(shi)現(xian)(xian)單(dan)次進(jin)樣，同時完成總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)、甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)、非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)濃(nong)度(du)的(de)(de)(de)測(ce)(ce)定(ding)(ding)。文(wen)章(zhang)(zhang)研究1.37～22.3mg/m3濃(nong)度(du)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)標(biao)(biao)(biao)準(zhun)氣(qi)(qi)(qi)，得(de)出甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)標(biao)(biao)(biao)準(zhun)曲(qu)線(xian)方(fang)(fang)程為(wei)(wei)Y=715X+829，r=0.9990，相(xiang)(xiang)對(dui)標(biao)(biao)(biao)準(zhun)偏差(cha)(cha)為(wei)(wei)0.26%～1.8%，總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)標(biao)(biao)(biao)準(zhun)曲(qu)線(xian)方(fang)(fang)程Y=695X+724，相(xiang)(xiang)對(dui)標(biao)(biao)(biao)準(zhun)偏差(cha)(cha)為(wei)(wei)0.35%～1.4%。該(gai)法(fa)(fa)用(yong)(yong)于(yu)環(huan)境(jing)空氣(qi)(qi)(qi)和(he)(he)固(gu)定(ding)(ding)污染源有組織排(pai)放中(zhong)(zhong)(zhong)(zhong)非(fei)(fei)(fei)(fei)甲(jia)(jia)(jia)(jia)烷(wan)(wan)(wan)(wan)總(zong)(zong)(zong)(zong)烴(jing)(jing)(jing)(jing)含量分(fen)析(xi)(xi)，操作(zuo)簡單(dan)，實(shi)驗(yan)結(jie)果滿意。

文(wen)獻7、8、9均是采(cai)用(yong)吸(xi)(xi)(xi)附(fu)采(cai)樣管(guan)采(cai)樣，經熱解(jie)吸(xi)(xi)(xi)后(hou)用(yong)氣(qi)(qi)相色譜氫火焰(yan)離子(zi)化檢測器進行測定。吸(xi)(xi)(xi)附(fu)采(cai)樣管(guan)在常溫下采(cai)集(ji)空氣(qi)(qi)樣品，非甲烷(wan)烴(jing)被吸(xi)(xi)(xi)附(fu)采(cai)樣管(guan)吸(xi)(xi)(xi)附(fu)，空氣(qi)(qi)中的(de)氧不(bu)被吸(xi)(xi)(xi)附(fu)而除去。采(cai)樣后(hou)，在240℃加熱解(jie)吸(xi)(xi)(xi)，用(yong)氮氣(qi)(qi)將解(jie)吸(xi)(xi)(xi)后(hou)的(de)非甲烷(wan)烴(jing)導入(ru)氣(qi)(qi)相色譜儀，用(yong)火焰(yan)離子(zi)化檢測器測定。

於(wu)香湘等(deng)采用單一進樣(yang)口六通(tong)閥進樣(yang)、毛細管(guan)柱(zhu)二維(wei)氣相色譜儀三通(tong)路分離(li)塔柱(zhu)分離(li)系統、采用氫(qing)離(li)子化檢測(ce)器(qi)分別(bie)產生信(xin)號，測(ce)定(ding)環境空氣中(zhong)的非(fei)甲(jia)烷總(zong)烴。通(tong)過柱(zhu)分離(li)系統將(jiang)樣(yang)品平(ping)均分配到(dao)不同類(lei)型的兩個毛細管(guan)色譜柱(zhu)，分別(bie)測(ce)定(ding)總(zong)烴及甲(jia)烷。方法(fa)簡單、快速，最大程(cheng)度地保證了進樣(yang)的一致性(xing)，從而保證了分析結果的準(zhun)確(que)性(xing)。

繆建軍等利用自(zi)動進(jin)(jin)樣(yang)氣相(xiang)(xiang)色(se)譜(pu)法(fa)測定氣體中的(de)(de)非(fei)(fei)甲(jia)烷(wan)烴。多功(gong)能自(zi)動進(jin)(jin)樣(yang)器(qi)在(zai)(zai)環(huan)境監測系統(tong)應用日益廣泛，它具有(you)液(ye)體進(jin)(jin)樣(yang)、頂(ding)空氣體進(jin)(jin)樣(yang)及微萃取進(jin)(jin)樣(yang)等多種進(jin)(jin)樣(yang)功(gong)能，采用自(zi)動進(jin)(jin)樣(yang)和氣體分(fen)流(liu)技術，雙柱(zhu)雙FID檢測器(qi)氣相(xiang)(xiang)色(se)譜(pu)法(fa)測定氣體中的(de)(de)非(fei)(fei)甲(jia)烷(wan)總烴，實現了(le)非(fei)(fei)甲(jia)烷(wan)總烴的(de)(de)連續自(zi)動分(fen)析，同時(shi)一次進(jin)(jin)樣(yang)即可得(de)到(dao)甲(jia)烷(wan)和總烴的(de)(de)數據。方法(fa)的(de)(de)檢出限為(wei)0.05mg/m3，測定的(de)(de)相(xiang)(xiang)對標準偏差在(zai)(zai)0.7%～1.8%內，非(fei)(fei)甲(jia)烷(wan)總烴的(de)(de)加標回收率為(wei)96.0%～98.5%。與傳統(tong)手動進(jin)(jin)樣(yang)法(fa)相(xiang)(xiang)比(bi)，本方法(fa)具有(you)重復性(xing)好(hao)、操作簡單、省時(shi)高(gao)效(xiao)等優(you)點，可大(da)大(da)提高(gao)氣體中非(fei)(fei)甲(jia)烷(wan)總烴的(de)(de)分(fen)析效(xiao)率和準確度。

現在(zai)針對特(te)殊(shu)場(chang)所(suo)的(de)非(fei)(fei)(fei)甲(jia)烷(wan)總(zong)烴(jing)(jing)的(de)測定也備(bei)受重視(shi)，許皖(wan)菁等(deng)通過(guo)對杭(hang)(hang)州(zhou)市主(zhu)要交通干(gan)線(xian)(xian)(xian)大(da)氣(qi)中(zhong)非(fei)(fei)(fei)甲(jia)烷(wan)總(zong)烴(jing)(jing)的(de)測定，得出(chu)了杭(hang)(hang)州(zhou)市主(zhu)要交通干(gan)線(xian)(xian)(xian)大(da)氣(qi)中(zhong)非(fei)(fei)(fei)甲(jia)烷(wan)總(zong)烴(jing)(jing)的(de)行為規(gui)律。結果表明，杭(hang)(hang)州(zhou)市主(zhu)要交通干(gan)線(xian)(xian)(xian)大(da)氣(qi)中(zhong)非(fei)(fei)(fei)甲(jia)烷(wan)總(zong)烴(jing)(jing)的(de)濃(nong)(nong)度日(ri)變化存在(zai)明顯的(de)雙(shuang)峰(feng)規(gui)律，上午8：00左右(you)，下(xia)午16：00左右(you)各出(chu)現一次峰(feng)值濃(nong)(nong)度；夏(xia)季濃(nong)(nong)度略高于冬季；各交通干(gan)線(xian)(xian)(xian)大(da)氣(qi)中(zhong)非(fei)(fei)(fei)甲(jia)烷(wan)烴(jing)(jing)濃(nong)(nong)度稍有差異。魏新明等(deng)介(jie)紹(shao)了油(you)庫、加油(you)站作業(ye)場(chang)所(suo)中(zhong)非(fei)(fei)(fei)甲(jia)烷(wan)總(zong)烴(jing)(jing)分布的(de)特(te)點(dian)，提(ti)出(chu)了研制便(bian)攜式帶氫(qing)火焰離子檢測器(qi)的(de)氣(qi)相色譜法作為現場(chang)檢測油(you)庫、加油(you)站作業(ye)場(chang)所(suo)中(zhong)非(fei)(fei)(fei)甲(jia)烷(wan)總(zong)烴(jing)(jing)測定的(de)建議。

3結語

對(dui)于非甲烷總(zong)烴的(de)測(ce)定，一方(fang)(fang)面是無論(lun)針筒采樣(yang)、碳(tan)管(guan)吸附采樣(yang)、氣袋采樣(yang)，都要求(qiu)采集樣(yang)品(pin)具有代表性。另一方(fang)(fang)面是對(dui)于分析(xi)(xi)方(fang)(fang)法(fa)的(de)應用，分析(xi)(xi)工作者們在(zai)不斷尋(xun)求(qiu)進步和(he)(he)創新，在(zai)分析(xi)(xi)結果的(de)準確度和(he)(he)精密度、在(zai)分析(xi)(xi)的(de)簡便和(he)(he)時效上能取得成果，而使非甲烷總(zong)烴的(de)監測(ce)有現實意義。