upu autu

Gasoline; Fa'aopoopo; Aniline; chromatography kasa;

1. fa'atomuaga Ona o le fa'atapula'aina o le malosi o le suau'u i totonu o le atunu'u ma le fa'amamaina o tekonolosi, o oloa suau'u e gaosia e fale gaosi masani i le maketi e le lava le sapalai, lea e mafua ai ona lolovaia le maketi i le tele o oloa fa'afefiloi. Ole penisini fa'afefiloi masani e fa'afefiloi ma le naphtha manogi fa'afefiloi (su'u mama) e fai ma mea mata. Ae ui i lea, i le pito i tua o le maualuga o tau o meafaitino ma le faʻateleina o tupe mama, o mea faʻapipiʻi aniline e masani ona faʻaaogaina e pei o mea faʻapipiʻi gasoline e le masani ai. Ina ia mafai ona ausia le tulaga lelei o le penisini ma mea faaopoopo i le tulaga o le penisini taavale a le atunuu, mo se faataitaiga, faaopoopo le 1% (vaega vaega) N-methylaniline e mafai ona faateleina le numera octane i le 2-4 iunite [1]. Ae ui i lea, o mea faʻapipiʻi aniline e iai ni lamatiaga i le feoaʻi ma le saogalemu o taʻavale, ma o le N-methylanilines o mea faʻapipiʻi o loʻo i ai le nitrogen, lea o le a mafua ai le faʻateleina o mea o loʻo i totonu o le nitrogen oxides i le taʻavale taʻavale, e mafua ai aʻafiaga leaga i le siosiomaga o le ea ma le soifua maloloina o tagata. . O vaega autu o mea faʻapipiʻi aniline e aofia ai le aniline, N-methylaniline, o-methylaniline, p-methylaniline, m-methylaniline ma N, n-dimethylaniline. I le taimi nei, o auala e masani ona lipotia mo le suʻeina o mea faʻapipiʻi methylaniline e aofia ai le naphthalene diethylamine spectrophotometry, gas chromatography-nitrogen chemiluminescence detection, high performance liquid chromatography, ma isi [2-4]. O le masani naphthalene diethylamine spectrophotometry e fa'alavelave i le fa'ai'uga fa'ai'uga ona o le tula'i mai o le itu, ma o le auala HPLC e mautinoa lava e a'afia i le fa'alavelaveina o le penisini matrix.

O le kesi chromatograph-nitrogen chemiluminescence auala e iloa ai e mana'omia ai le saunia o se su'esu'ega chemiluminescence taugata e mafai ona filifili filifilia le nitrogen. O le faʻataʻitaʻiga talu ai nei (e leʻi faʻasalalauina) tulaga faʻale-atunuʻu "Gas Chromatography mo le Suʻesuʻeina o Oxycompounds ma Aniline Compounds i Gasoline" o loʻo faʻamatalaina ai foi se auala o le auiliiliga e faʻaaoga ai Deans ki luga o koluma polarity faʻafeagai e lua e faʻaaoga ai le faʻaogaina o le afi mumu o le hydrogen masani ma taugofie. Mo lenei metotia, ua lomia e ThermoFisher Scientific se Pepa Talosaga (Application Notes C GC-50). I le avea ai o se faʻafaigofie, o lenei pepa o loʻo faʻaalia ai se auala sili atu le koluma tasi e faʻavae i luga o le tulaga faʻapitonuʻu DB37 / T-2650 na tuʻuina atu e Shandong Province i le 2015 [5]. O faʻaiʻuga e faʻaalia ai o lenei metotia e faigofie ona faʻaogaina, ma le toe faʻaleleia lelei ma maualuga le saʻo. I le taimi lava e tasi, o le metotia na sili ona lelei e foia ai le faafitauli o le faʻalavelaveina o le quantification o le aniline e ala i le gasoline matrix composition.

2. Vaaiga lautele o le mataupu faavae o le metotia I luga o se koluma polar polyethylene glycol (PEG), o mea faʻapipiʻi aniline i totonu o taavale afi na vavae ese mai le gasoline matrix, ma o le acetophenone na faʻaaogaina e avea ma tulaga i totonu. O mea o loʻo i totonu o le aniline, N-methylaniline, o-methylaniline, p-methylaniline, m-toluidine ma le N, n-dimethylaniline i totonu o taavale afi na fuafuaina e le gas chromatograph faʻapipiʻiina i le afi afi afi (FID), ma o le faʻatonuga o vaega taʻitasi o loʻo i ai. fa'atatau ile fa'atatau ile tulaga fa'alotoifale.

3. Meafaigaluega

3.1 Su'e 1300E Gas Chromatograph fa'atasi ai ma shunt/non-shunt inlet,

AS1310 faʻataʻitaʻiga faʻapitoa, Suʻe faʻamaʻi afi (FID);

3.2 Komepiuta Chameleon

3.3 Microsyringe: gafatia e 10uL.

4. Reagents ma meafaitino

4.1 Koluma: koluma Polar, TG-Wax, koluma umi 60m,

I totonu lautele 0.25mm, vai mafiafia ata 0.25μm

4.2 Se'i vagana ua fa'amaoti mai, o reagents o lo'o fa'aaogaina i lenei metotia e mama atoatoa ma fa'atagaina.

Fa'aaoga isi mea fa'afoliga e maualuga atu le mama.

Reagents fa'aaogaina mo fa'amoemoega lelei ma fa'atatau, e aofia ai le aniline (Ca #62-53-3), N-

Methylaniline (CAS#100-61-8), o-methylaniline (CAS#95-53-4),

P-methylaniline (CAS#106-49-0), m-methylaniline (CAS#188-44-)

1) ma le N, n-dimethylaniline (CAS #121-69-7), o le tulaga i totonu o le phenylene.

Ketone (CASA #96-86-2).

5. auala fa'ata'ita'i

5.1 Faʻavaeina o le faʻasologa masani

5.1.1 Sauniuniga o vaifofo masani: O mea masani uma e isooctane (chromatographically mama)

Dilution, fa'atulagaina fa'atasi ma mea aniline ono i le 0.1%, 0.2%, 0.5%, 1%,

Mo fa'ata'ita'iga fa'ata'ita'i ile 1.5% ma le 2% maualuga, va'ai le Laulau 1 mo fa'amatalaga au'ili'ili.

Fuafuaga 1. laulau fa'ata'ita'i fa'ata'ita'iga masani

5.1.2O fa'ata'ita'iga fa'ata'ita'iga sa su'esu'eina e tusa ai ma le metotia GC ile Laulau 2

Laulau 2. GC auala

5.1.3 A'oa'oga: O vaega e fa'atatau i le taimi fa'atumauina o vaega ta'itasi, ma o le chromatogram o le fa'ata'ita'iga masani o le ituaiga masani (0.1% concentration level) o lo'o fa'aalia i le Ata 1.

Ata 1. Chromatogram o fa'ata'ita'iga masani masani

5.1.4 Fa'atu se pi'o masani. Faʻasaʻo le auala faʻavasegaina i le faʻaogaina o faʻamatalaga i le polokalama Chameleon, o le faʻavasegaina o le laina (e le faʻamalosia i luga o le amataga), o le ituaiga o iloiloga o le pito i luga, ma o le tulaga i totonu e fesuisuiaʻi. Ole fua fa'atatau ole fua fa'atatau ma laina fa'amaopoopo fa'atasi o vaega ta'itasi o lo'o fa'aalia ile Laulau 3, ma o le fa'asologa masani o vaega ta'itasi o lo'o fa'aalia ile Ata 2-7.

laulau 3. Fa'atonuga fa'asologa o fa'amaumauga

5.1.5 Fa'asologa o taunu'uga: O le fua faatatau o le vaega pito i luga o vaega ta'itasi i le pito i luga ole acetophenone na fuafuaina. O le vaega tele o vaega ta'itasi e fetaui ma le fua faatatau o lo'o faitauina mai le fa'atonuga talafeagai, ma o le taunuuga e sa'o i le 0.01%.

6. I'uga ma talanoaga

6.1 Faʻasologa masani: O le faʻasologa masani e faʻavaeina e 6 oloa faʻapitoa, o le maualuga o le maualuga o le maualuga e mai le 0.01% i le 2.0%, ma o le laina faʻamaopoopo R2 e sili atu nai lo le 0.999, i le faasologa (silasila i le Laulau 3 mo faʻamatalaga).

6.2 Metotia faʻamaonia ma faʻaleleia atili: Faʻatusatusa i le Deans switch method, o le tasi koluma auala faʻafeiloaʻi i totonu o lenei pepa o loʻo i ai le lelei o le tau maualalo, faʻaogaina faigofie ma le maualuga o le toe gaosia. Ae ui i lea, o nisi vaega o le penisini matrix e ono a'afia ai fa'aputuga aniline.

Mo se faʻataʻitaʻiga, e tusa ai ma le metotia o loʻo faʻamatalaina i lenei pepa, pe a suʻeina se faʻataʻitaʻiga gaoline matrix gaogao, e maua ai pe a uma ona faʻatusatusa i le chromatogram o le faʻataʻitaʻiga masani, o loʻo i ai se tumutumu i le tusa ma le 0.04min (o le lautele o le pito i luga ole tumutumu o le 0.07min) mai le vaega aniline o le oloa masani, lea e faʻalavelave i le auiliiliga o le aniline. (silasila i le Ata 2)

3

ATA. 2. Fa'atusatusaga i le va o fa'ata'ita'iga fofo fa'ata'ita'i a aniline ma fa'ailoga matrix matrix avanoa

Ina ia faʻamaonia o lenei mea e le o se aniline, ma faʻaumatia le faʻalavelave i le quantification aniline. O le auala i totonu o lenei pepa e sili ona lelei, ma o le faagasologa o le siitia o le vevela o le polokalame

DB37 / T-2650 faʻamatalaga o le 5 ℃ / min ua suia i le 4 ℃ / min. O fa'ata'ita'iga matrix matrix fa'atasi ai ma fa'ata'ita'iga fa'aopoopo fa'aopoopo sa su'esu'eina e lenei metotia. E pei ona vaaia i le FIG. 3,

O le auala sili ona lelei e mafai ona vavaeeseina lenei vaega mai le aniline i le gasoline matrix, ma faʻamaonia atili ai o le suauʻu faʻataʻitaʻiga e mafai ona maua e le DB37 / T-2650 metotia.

Ole tumutumu ile 21.905min e le o le aniline. O le fa'alavelave fa'alavelave na fa'amautu e naphthalene e ala ile qualitative mass spectrometry ma fa'atusatusaga masani.

ATA. 3. Fa'atusatusaga o fa'ata'ita'iga o suau'u fa'ata'ita'iga, aniline fa'ata'ita'iga ma penisini matrix (auala sili ona lelei)

6.2 Toe fa'aleleia fua ma fa'ata'ita'iga sa'o: O le fa'ata'ita'iga fa'ata'ita'iga fa'ata'ita'iga na fa'atinoina i le matrix gasoline avanoa, ma sa fa'atinoina le fua fa'atatau o le toe fa'aleleia ma le fa'aopoopoga o le 100ppm (n=5). O fa'ai'uga na fa'aalia ile Laulau 4.

laulau 4. Fuafuaga toe fa'aleleia ma fa'ai'uga o su'ega toe fa'aleleia

7.faaiuga

O lenei faʻataʻitaʻiga e faʻatatau i le tulaga faʻapitonuʻu DB37 / T-2650 o le Itumalo o Shandong, ma faʻaaogaina le FID detector e iloa ai mea faʻapipiʻi aniline i le penisini. O le auala e faigofie ma o le taunuuga e faʻatuatuaina. E ui lava e mafai ona faʻaoga faʻalavelave i le suʻesuʻega moni, o le faʻalavelaveina o le naphthalene i nisi o mea faʻapipiʻi penisini i suʻesuʻega aniline e mafai ona aloese mai le faʻaogaina o tulaga.

Fa'asinomaga:

［1］Zhong Shaofang, WEN Huan et al. Fuafuaga o mea fa'aopoopo Methylaniline i le afi afi e ala ile kasa Chromatography [J]. Falesu'e o Alaleo, 2012, Volume 29, Lomiga 6, 3564-3567.

［2］Zhang Maolin, LI Baoding, ZHANG Yufa.Su'esu'e ile fa'amautuina ole N-methylaniline ile Spectrophotometry [J]. Journal of Zhengzhou Grain University, 2000, 21(2) : 86-88.

［3］Liu Baomin, LIU Minghong, XU Hong et al. Su'esu'ega i luga ole fa'atulagaina fa'atasi ole aniline, N-methylaniline ma le N, N-dimethylaniline ile Ea e ala ile chromatography vai maualuga [J]. Chinese Journal of Health Inspection, 2009, 19(8) : 1804-1807.

［4］Yang Yongtan, Wu Ming-qing, WANG Zheng. Tufatufaina o mea e maua ai le nitrogen i totonu o le penisini catalytic e ala ile gas chromatography-Nitrogen chemiluminescence detection [J]. Chromatography,2010, 28(4): 336 — 340

DB37/T-2650, Fuafuaga o mea faʻapipiʻi aniline i le afi afi e ala ile chromatography gas