lentsoe la bohlokoa

Peterole; Lintho tse ekelitsoeng; Aniline; Kromatography ea khase;

1. Selelekela Ka lebaka la thibelo ea matla a peterole ea lapeng le theknoloji ea ho hloekisa, lihlahisoa tsa oli tse hlahisoang ke lifeme tse tloaelehileng tsa ho hloekisa 'marakeng li haella, e leng se etsang hore palo e kholo ea lihlahisoa tsa oli tse kopantsoeng e tlale 'marakeng. Peterole e kopantsoeng e tloaelehileng e kopantsoe haholo le naphtha e tsoakiloeng e nkhang hamonate (oli e bobebe) e le thepa e tala. Leha ho le joalo, ka lebaka la litheko tse phahameng tsa thepa e tala le ho eketsa phaello, metsoako ea aniline hangata e sebelisoa e le litlatsetso tse sa tloaelehang tsa peterole. E le ho etsa hore index ea boleng ba peterole e nang le litlatsetso tse joalo e fihlelle maemo a naha a peterole ea likoloi, mohlala, ho eketsa 1% (karolo ea boima) N-methylaniline e ka eketsa palo ea octane ka li-unit tse 2-4 [1]. Leha ho le joalo, litlatsetso tsa aniline li na le likotsi tse ka bang teng ho motsamao le polokeho ea likoloi, 'me N-methylanilines ke metsoako e nang le naetrojene, e tla lebisa keketsehong ea litaba tsa nitrogen oxides mosi oa koloi, e leng se bakang litlamorao tse kotsi tikolohong ea sepakapaka le bophelo bo botle ba batho. Likarolo tse ka sehloohong tsa litlatsetso tsa aniline li kenyelletsa aniline, N-methylaniline, o-methylaniline, p-methylaniline, m-methylaniline le N, n-dimethylaniline. Hona jwale, mekgwa e tlalehwang hangata bakeng sa ho fumana metsoako ya methylaniline e kenyeletsa naphthalene diethylamine spectrophotometry, ho lemoha gas chromatography-nitrogen chemiluminescence, high performance liquid chromatography, jj. [2-4]. Naphthalene diethylamine spectrophotometry ya setso e sitisa sephetho sa ho fumana ka lebaka la ho hlaha ha karabelo e ka thoko, mme mokgwa wa HPLC o angwa ka ho ke keng ha qojwa ke ho kena-kenana ha peterole matrix.

Mokhoa oa ho lemoha khase ea chromatograph-naetrojene chemiluminescence o hloka ho lokisoa ha sesebelisoa sa ho lemoha khase ea naetrojene se turang se ka khethollang naetrojene ka khetho. Tekanyetso ea naha e sa tsoa ngoloa (e seng e tla phatlalatsoa) ea "Khase Chromatography bakeng sa ho Fumana Lik'hemik'hale tsa Oxycompound le Lik'hemik'hale tsa aniline ho Petroli" e boetse e hlalosa mokhoa oa tlhahlobo o sebelisang Deans switch likholomong tse peli tse fapaneng tsa polarity ho sebelisoa sesebelisoa sa ho lemoha malakabe a hydrogen ion se tloaelehileng le se theko e tlaase. Bakeng sa mokhoa ona, ThermoFisher Scientific e phatlalalitse pampiri ea Kopo (Lintlha tsa Kopo C GC-50). E le ho nolofatsa, pampiri ena e hlahisa mokhoa o potlakileng oa kholomo e le 'ngoe o thehiloeng ho standard ea lehae ea DB37/T-2650 e fanoeng ke Profense ea Shandong ka 2015 [5]. Liphetho li bontša hore mokhoa ona o bonolo ho o sebelisa, ka ho pheta-pheta hantle le ho nepahala ho hoholo. Ka nako e ts'oanang, mokhoa ona o ntlafalitsoe ho rarolla bothata ba ho kena-kenana ha tekanyo ea aniline ka motsoako oa matrix ea peterole.

2. Kakaretso ea molao-motheo oa mokhoa ona Kholomong ea polar polyethylene glycol (PEG), metsoako ea aniline peteroleng ea likoloi e ile ea aroloa ho tsoa ho peterole, 'me acetophenone ea sebelisoa e le tekanyetso ea ka hare. Likahare tsa aniline, N-methylaniline, o-methylaniline, p-methylaniline, m-toluidine le N, n-dimethylaniline peteroleng ea likoloi li ile tsa khethoa ke chromatograph ea khase e nang le sesebelisoa sa ho lemoha ionization ea malakabe (FID), 'me mahloriso a karolo ka 'ngoe a ile a baloa ka ho sheba maemo a ka hare.

3. Liletsa

3.1 Trace 1300E Gas Chromatography e nang le shunt/non-shunt inlet,

AS1310 e etsang sampole ka boiketsetso, sesebelisoa sa ho lemoha ionization ea malakabe (FID);

3.2 Software ea Chameleon

3.3 Microsyringe: bokgoni ke 10uL.

4. Li-reagent le thepa

4.1 Kholomo: Kholomo e polar, TG-Wax, bolelele ba kholomo 60m,

Bophara ba ka hare ke 0.25mm, botenya ba filimi e metsi ke 0.25μm

4.2 Ntle le ha ho boletsoe ka tsela e 'ngoe, li-reagent tse sebelisitsoeng mokhoeng ona li hloekile ebile lia lumelloa ka tlhahlobo

Sebelisa li-reagent tse ling tse hloekileng haholo.

Li-reagent tse sebelisetsoang merero ea boleng le ea bongata, ho kenyeletsoa 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) le N, n-dimethylaniline (CAS#121-69-7), tekanyetso ya kahare e ne e le phenylene

Ketone (CASA #96-86-2).

5. Mekhoa ea liteko

5.1 Ho thehoa ha mothapo o tloaelehileng

5.1.1 Ho lokisoa ha tharollo e tloaelehileng: Lintho tsohle tse tloaelehileng li isooctane (li hloekile ka chromatographically)

Ho hlapolla, ho hlophisitsoeng ka lintho tse tšeletseng tsa aniline ka ho latellana ka 0.1%, 0.2%, 0.5%, 1%,

Bakeng sa disampole tse tloaelehileng maemong a 1.5% le 2%, sheba Tafole ea 1 bakeng sa tlhaiso-leseling e qaqileng ea mahloriso.

Tafole ea 1. Tafole e tloaelehileng ea mahloriso a sampole

5.1.2Disampole tse tloaelehileng di sekasekilwe ho latela mokhoa wa GC ho Tafole ya 2

Tafole ea 2. Mokhoa oa GC

5.1.3 Boleng: Dikarolo di boleng ho ya ka nako ya ho boloka karolo ka nngwe, mme chromatogram ya sampole e tloaelehileng ya mofuta o tlwaelehileng (boemo ba mahloriso ba 0.1%) e bontshitswe ho Setshwantsho sa 1.

Setšoantšo sa 1. Chromatogram ea sampole e tloaelehileng e tloaelehileng

5.1.4 Theha mothapo o tloaelehileng. Fetola mokhoa oa ho lekanya mokhoeng oa ho sebetsana le data ho software ea Chameleon, mofuta oa ho lekanya o mothapo o otlolohileng (ha o qobelloe ho feta tšimoloho), mofuta oa tlhahlobo ke sebaka sa tlhoro, 'me maemo a ka hare aa fetoha. Tekanyo e tloaelehileng ea mothapo le coefficient ea khokahano e mothapo ea karolo ka 'ngoe li bontšitsoe ho Tafole ea 3, 'me mothapo o tloaelehileng oa karolo ka 'ngoe o bontšitsoe ho Setšoantšo sa 2-7.

tafole ea 3. Lintlha tsa khetla ea ho lekanya

5.1.5 Palo ea sephetho: Karolelano ea sebaka sa tlhoro ea karolo ka 'ngoe le sebaka sa tlhoro ea acetophenone e baliloe. Karolo ea bophahamo ba boima ba karolo ka 'ngoe e tsamaellanang le karolelano e baloa ho tsoa mothapong o nepahetseng oa tokiso, 'me sephetho se nepahetse ho 0.01%.

6. Liphetho le puisano

6.1 Mokoloko o tloaelehileng: Mokoloko o tloaelehileng o thehiloe ke lihlahisoa tse 6 tse tloaelehileng, sebaka sa mahloriso a bophahamo ba modumo se tloha ho 0.01% ho isa ho 2.0%, 'me coefficient ea khokahano ea mola oa R2 e kholo ho feta 0.999, ka ho latellana (sheba Tafole ea 3 bakeng sa lintlha tse qaqileng).

6.2 Netefatso le ntlafatso ea mokhoa: Ha ho bapisoa le mokhoa oa phetoho oa Deans, mokhoa oa kholomo e le 'ngoe o hlahisitsoeng pampiring ena o na le melemo ea litšenyehelo tse tlase, ts'ebetso e bonolo le ho ikatisa hape ho hoholo. Leha ho le joalo, likarolo tse ling tse ka har'a matrix ea peterole li ka ama metsoako ea aniline.

Mohlala, ho ya ka mokhoa o hlalositsweng pampiring ena, ha ho lekoa sampole ya peterole e se nang letho, ho fumanwa hore kamora ho bapiswa le chromatogram ya sampole e tloaelehileng, ho na le tlhoro e ka bang 0.04min (bophara ba tlhoro ke 0.07min) ho tloha karolong ya aniline ya sehlahiswa se tloaelehileng, e sitisang tlhahlobo ya aniline. (sheba Setshwantsho sa 2)

3

Setšoantšo sa 2. Papiso pakeng tsa li-spectra tsa tharollo ea aniline e tloaelehileng le li-spectra tsa matrix ea peterole e se nang letho

E le ho netefatsa hore ntho ena ha se aniline, le ho felisa tšitiso ea ho lekanya aniline. Mokhoa o pampiring ena o ntlafalitsoe, 'me ts'ebetso ea ho phahama ha mocheso oa lenaneo ke

Tlhaloso ea DB37/T-2650 ea 5℃ /min e fetotsoe ho 4℃ /min. Lisampole tsa peterole tse nang le lisampole tse tloaelehileng tse ekelitsoeng li hlahlobiloe ka mokhoa ona. Joalokaha ho ka bonoa ho tsoa ho Setšoantšo sa 3,

Mokhoa o ntlafalitsoeng o ka arola karolo ena ho aniline ka har'a matrix ea peterole, 'me o paka hape hore sampole ea oli e ka fumanoa ka mokhoa oa DB37/T-2650.

Sehlohlolo sa metsotso e 21.905 e ne e se aniline. Sehlopha sa ho kena-kenana se ile sa fumanoa e le naphthalene ka ho sebelisa qualitative mass spectrometry le papiso e tloaelehileng.

Setšoantšo sa 3. Papiso ea li-spectra tsa lisampole tsa oli, lisampole tsa aniline le matrix ea peterole (mokhoa o ntlafalitsoeng)

6.2 Teko ea sekhahla sa ho hlaphoheloa le ho nepahala: Teko ea sekhahla sa ho hlaphoheloa e tloaelehileng e entsoe ka matrix ea peterole e se nang letho, 'me sekhahla sa ho hlaphoheloa se tloaelehileng ka boemo ba ho eketsa ba 100ppm se entsoe (n=5). Liphetho li bontšitsoe ho Tafole ea 4.

tafole ea 4. Sekhahla sa ho hlaphoheloa le liphetho tsa liteko tsa ho pheta-pheta

7.qeto

Teko ena e bua ka standard ea lehae ea DB37/T-2650 ea Profense ea Shandong, 'me e sebelisa detector ea FID ho lemoha metsoako ea aniline peteroleng. Mokhoa ona o bonolo 'me sephetho sea tšepahala. Le hoja tšitiso e ka sebelisoa tlhahlobong ea 'nete, tšitiso ea naphthalene likarolong tse ling tsa peterole ho tlhahlobo ea aniline e ka qojoa ka ho ntlafatsa maemo.

Litšupiso:

［1］Zhong Shaofang, WEN Huan et al. Ho fumana Methylaniline Additives ho Petroleum ea Motlakase ka Gas Chromatography [J]. Spectrum Laboratory, 2012, Buka ea 29, Khatiso ea 6, 3564-3567.

［2］Zhang Maolin, LI Baoding, ZHANG Yufa.Thuto mabapi le ho fumana N-methylaniline ka Spectrophotometry [J]. Koranta ea Zhengzhou Grain University, 2000, 21(2): 86-88.

［3］Liu Baomin, LIU Minghong, XU Hong et al. Thuto mabapi le ho fumana aniline, N-methylaniline le N, N-dimethylaniline ka nako e le 'ngoe Moyeng ka chromatography ea metsi e sebetsang hantle [J]. Chinese Journal of Health Inspection, 2009, 19(8): 1804-1807.

［4］Yang Yongtan, Wu Ming-qing, WANG Zheng. Kabo ea metsoako e nang le naetrojene ka har'a peterole ea catalytic ka khase chromatography-Naetrojene chemiluminescence detection [J]. Chromatography,2010, 28(4): 336 — 340

DB37/T-2650, Ho fumana metsoako ea aniline peteroleng ea enjene ka chromatography ea khase