huaʻōlelo

Gasoline; Nā mea hoʻohui; Aniline; ʻO ke kinoea chromatography;

1. hoʻolauna Ma muli o ke kaohi ʻana o ka ikehu ʻaila home a me ka ʻenehana hoʻomaʻemaʻe ʻana, ʻo nā huahana aila i hana ʻia e nā refineries maʻamau i ka mākeke ua pōkole ka lako, kahi e hoʻopiha ai i ka nui o nā huahana aila hui ʻia i ka mākeke. Hoʻohui nui ʻia ka ʻaila hinu i hui pū ʻia me ka naphtha ʻala ʻala (ʻaila māmā) ma ke ʻano he kumu. Eia nō naʻe, ma ke ʻano o nā kumukūʻai kumu kiʻekiʻe a me ka hoʻonui ʻana i ka loaʻa kālā, hoʻohana pinepine ʻia nā pūhui aniline e like me nā mea hoʻohui ʻole. No ka hoʻokō ʻana i ka ʻōlelo kuhikuhi maikaʻi o ka ʻaila me nā mea hoʻohui like ʻole i ka standard gasoline kaʻa kaʻa, no ka laʻana, hiki ke hoʻonui i ka helu octane e 2-4 mau ʻāpana (1%) N-methylaniline. Eia nō naʻe, hiki i nā mea hoʻohui aniline ke pilikia i ka neʻe ʻana a me ka palekana o nā kaʻa, a ʻo N-methylanilines nā pūhui nitrogen-containing, e alakaʻi ai i ka hoʻonui ʻana i ka ʻike o ka nitrogen oxides i loko o ka pau ʻana o ka kaʻa, e hoʻopilikia ai i ka lewa a me ke olakino kanaka. . ʻO nā mea nui o nā mea hoʻohui aniline he aniline, N-methylaniline, o-methylaniline, p-methylaniline, m-methylaniline a me N, n-dimethylaniline. I kēia manawa,ʻo nāʻano i hōʻike pinepineʻia no kaʻikeʻana i nā pūhui methylaniline,ʻo ia ka naphthalene diethylamine spectrophotometry, gas chromatography-nitrogen chemiluminescence detection, high performance liquid chromatography, etc. [2-4]. Hoʻopilikia ka naphthalene diethylamine spectrophotometry i ka hopena hoʻoholo ma muli o ka loaʻa ʻana o ka hopena ʻaoʻao, a ʻo ke ʻano HPLC e hoʻopilikia ʻole ʻia e ke keakea ʻana o ka matrix gasoline.

Pono ke ʻano o ka ʻike ʻana i ke kinoea chromatograph-nitrogen chemiluminescence i ka hoʻomākaukau ʻana i kahi mea ʻike maka kemiluminescence nitrogen pipiʻi e hiki ke koho koho i ka nitrogen. ʻO ka maʻamau o ka moku'āina i haku hou ʻia (akā e paʻi ʻia) ʻo "Gas Chromatography for the Determination of Oxycompounds and aniline Compounds in Gasoline" e wehewehe pū ana i ke ʻano o ka nānā ʻana me ka hoʻohana ʻana iā Deans i nā kolamu polarity ʻelua me ka hoʻohana ʻana i ka mea ʻike ahi hydrogen ion maʻamau. No kēia ʻano hana, ua paʻi ʻo ThermoFisher Scientific i kahi palapala noi (Nā palapala noi C GC-50). Ma ke ʻano maʻalahi, hoʻopuka kēia pepa i kahi ala kolamu wikiwiki e pili ana i ka maʻamau kūloko DB37/T-2650 i hoʻopuka ʻia e Shandong Province ma 2015 [5]. Hōʻike nā hopena he maʻalahi kēia ʻano hana, me ka hoʻihoʻi maikaʻi a me ka pololei kiʻekiʻe. I ka manawa like, ua hoʻolālā ʻia ke ala e hoʻoponopono ai i ka pilikia o ka hoʻopili ʻana i ka helu aniline e ka hui ʻana o ka matrix.

2. Nānā o ke kumu o ke kaʻina hana Ma kahi kolamu polar polyethylene glycol (PEG), ua hoʻokaʻawale ʻia nā pūhui aniline i loko o ka ʻaila kaʻa mai ka matrix gasoline, a ua hoʻohana ʻia ka acetophenone e like me ke kūlana kūloko. ʻO nā mea i loko o ka aniline, N-methylaniline, o-methylaniline, p-methylaniline, m-toluidine a me N, n-dimethylaniline i loko o ka ʻaila automotive ua hoʻoholo ʻia e ke kinoea chromatograph i hoʻolako ʻia me ka flame ionization detector (FID), a ʻo ke ʻano o kēlā me kēia ʻāpana. helu ʻia ma ke ʻano o ka maʻamau kūloko.

3. Nā mea kani

3.1 Helu 1300E Gas Chromatograph me ka puka komo shunt/non-shunt,

AS1310 mea hoʻoheheʻe maʻemaʻe, mea ʻike ionization Flame (FID);

3.2 Pūnaehana Chameleon

3.3 Microsyringe: ʻo 10uL ka mana.

4. Reagents a me nā mea

4.1 Column: kolamu polar, TG-Wax, kolamu lōʻihi 60m,

Iloko anawaena 0.25mm, wai film mānoanoa 0.25μm

4.2 Inā ʻaʻole i kuhikuhi ʻia, ʻo nā reagents i hoʻohana ʻia ma kēia ʻano hana he maʻemaʻe a ʻae ʻia.

E hoʻohana i nā reagents ʻē aʻe o ka maʻemaʻe kiʻekiʻe.

Hoʻohana ʻia nā reagents no nā kumu qualitative a quantitative, me ka 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) a me N, n-dimethylaniline (CAS#121-69-7), ʻo ka maʻamau o loko he phenylene.

Ketone (CASA #96-86-2).

5. Nā ʻano hoʻokolohua

5.1 Ka hoʻokumu ʻana i ka pihi maʻamau

5.1.1 Ka hoʻomākaukau ʻana i ka hopena maʻamau: ʻO nā mea maʻamau a pau he isooctane (chromatographically pure)

ʻO ka dilution, i hoʻonohonoho ʻia me nā mea aniline ʻeono i 0.1%, 0.2%, 0.5%, 1%,

No nā laʻana maʻamau ma 1.5% a me 2% pae, e ʻike i ka Papa 1 no ka ʻike kikoʻī.

Papa 1. Papa kuhikuhi la'ana ma'amau

5.1.2Ua kālailai ʻia nā laʻana maʻamau e like me ke ʻano GC ma ka Papa 2

Papa 2. Keʻano GC

5.1.3 Qualitative: He qualitative nā ʻāpana e like me ka manawa paʻa o kēlā me kēia ʻāpana, a ʻo ka chromatogram o ka laʻana maʻamau o ke ʻano maʻamau (0.1% ka pae hoʻonaʻauao) i hōʻike ʻia ma ke Kiʻi 1.

Kiʻi 1. Chromatogram o ka laʻana maʻamau maʻamau

5.1.4 E hoʻokumu i ka pihi maʻamau. Hoʻoponopono i ke ʻano calibration ma ke ʻano hana ʻikepili i ka polokalamu Chameleon, ʻo ke ʻano calibration he linear (ʻaʻole i koi ʻia ma luna o ke kumu), ʻo ke ʻano loiloi he wahi kiʻekiʻe, a ʻo ke ʻano o loko ke ʻano. Hōʻike ʻia ka hoʻohālikelike ʻana maʻamau a me ka coefficient correlation linear o kēlā me kēia ʻāpana ma ka Papa 3, a ua hōʻike ʻia ka ʻōkuhi maʻamau o kēlā me kēia ʻāpana ma ke Kiʻi 2-7.

pākaukau 3. ʻIkepili curve calibration

5.1.5 Ka helu ʻana o ka hopena: Ua helu ʻia ka lakio o ka ʻāpana kiʻekiʻe o kēlā me kēia ʻāpana i ka ʻāpana kiʻekiʻe o ka acetophenone. Heluhelu ʻia ka hakina leo nui o kēlā me kēia ʻāpana e pili ana i ka ratio mai ka pihi hoʻoponopono kūpono, a pololei ka hopena i ka 0.01%.

6. Nā hualoaʻa a me ke kūkākūkā

6.1 Kūlana maʻamau: Ua hoʻokumu ʻia ka pihi maʻamau e 6 mau huahana maʻamau, ʻo ka nui o ka neʻe ʻana mai ka 0.01% a i ka 2.0%, a ʻoi aku ka nui o ka coefficient linear correlation R2 ma mua o 0.999, kēlā me kēia (e nānā i ka Papa 3 no nā kikoʻī).

6.2 Ka hōʻoia ʻana a me ka loiloi ʻana: Ke hoʻohālikelike ʻia me ke ʻano hoʻololi Deans, ʻo ke ʻano kolamu hoʻokahi i hoʻokomo ʻia i loko o kēia pepa nā mea maikaʻi o ke kumu kūʻai haʻahaʻa, ka hana maʻalahi a me ke kiʻekiʻe reproducibility. Eia nō naʻe, hiki i kekahi mau mea i loko o ka matrix gasoline ke hoʻopili i nā pūhui aniline.

No ka laʻana, e like me ke ʻano i wehewehe ʻia ma kēia pepa, i ka wā e hoʻāʻo ai i kahi laʻana matrix matrix blank, ʻike ʻia ma hope o ka hoʻohālikelike ʻana me ka chromatogram o ka hāpana maʻamau, aia kahi kiʻekiʻe ma kahi o 0.04min (ʻo ka laula kiʻekiʻe o ka piko. 0.07min) mai ka mea aniline o ka huahana maʻamau, e hoʻopilikia i ka nānā ʻana o aniline. (e nana i ke Kii 2)

3

FIG. 2. Hoʻohālikelike ma waena o nā kikoʻī hoʻonā maʻamau aniline a me nā kikoʻī matrix matrix blank

I mea e hōʻoia i kēia mea ʻaʻole aniline, a hoʻopau i ke keakea i ka helu aniline. ʻO ke ʻano o kēia pepa i hoʻopaʻa ʻia, a ʻo ke kaʻina hana piʻi wela o ka papahana

DB37 / T-2650 wehewehe o 5 ℃ / min hoʻololi i 4 ℃ / min. Ua kālailai ʻia nā hōʻailona matrix matrix me nā laʻana maʻamau i hoʻohui ʻia e kēia ʻano. E like me ka mea i ʻike ʻia mai ka FIG. 3,

Hiki ke hoʻokaʻawale i kēia ʻāpana mai ka aniline i loko o ka matrix gasoline, a hōʻoia hou e hiki ke loaʻa ka ʻaila hinu ma ke ʻano DB37/T-2650.

ʻO ke kiʻekiʻe ma 21.905min ʻaʻole aniline. Ua hoʻoholo ʻia ka hui hoʻopilikia e naphthalene e ka qualitative mass spectrometry a me ka hoʻohālikelike maʻamau.

FIG. 3. Hoʻohālikelike i nā kikoʻī o nā laʻana aila, nā ʻāpana aniline a me ka matrix matrix

6.2 Ho'āʻo hoʻihoʻi ʻana a me ka pololei: Ua hana ʻia ka hoʻokolohua maʻamau o ka hoʻihoʻi hou ʻana me ka pahu pahu pahu pahu, a ua hana ʻia ka helu hoʻihoʻi maʻamau me ka pae hoʻohui o 100ppm (n=5). Ua hōʻike ʻia nā hopena ma ka Papa 4.

papa 4. Ka helu hoʻihoʻi a me nā hopena hoʻāʻo hou

7.hopena

E pili ana kēia hoʻokolohua i ke kūlana kūloko DB37/T-2650 o Shandong Province, a hoʻohana i ka mea ʻike FID e ʻike i nā pūhui aniline i ka ʻaila. He maʻalahi keʻano a he hilinaʻi ka hopena. ʻOiai hiki ke hoʻohana ʻia ke keʻakeʻa ʻana i ka nānā ʻana maoli, hiki ke pale ʻia ka hoʻopili ʻana o ka naphthalene i loko o kekahi mau mea hoʻoheheʻe ʻaila i ka nānā ʻana i ka aniline ma o ka hoʻonui ʻana i nā kūlana.

Kuhikuhi:

［1］Zhong Shaofang, WEN Huan et al. Ka Hoʻoholo ʻana i nā mea hoʻohui Methylaniline i loko o ka ʻaila kaʻa ma ke kinoea Chromatography [J]. Spectrum Laboratory, 2012, Volume 29, Puka 6, 3564-3567.

［2］Zhang Maolin, LI Baoding, ZHANG Yufa.E aʻo i ka hoʻoholo ʻana o N-methylaniline ma o Spectrophotometry [J]. Nūpepa o Zhengzhou Grain University, 2000, 21(2) : 86-88.

［3］Liu Baomin, LIU Minghong, XU Hong et al. E aʻo e pili ana i ka hoʻoholo like ʻana o ka aniline, N-methylaniline a me N, N-dimethylaniline i loko o ka Ea e ka chromatography wai hana kiʻekiʻe [J]. Nūpepa Haina o ka Nānā Ola, 2009, 19(8) : 1804-1807.

［4］Yang Yongtan, Wu Ming-qing, WANG Zheng. Ka hoʻokaʻawale ʻana o nā pūhui i loko o ka ʻaila catalytic ma ke kinoea chromatography-Nitrogen chemiluminescence detection [J]. Chromatography,2010, 28(4): 336 — 340

DB37/T-2650, Ka hoʻoholo ʻana o nā pūhui aniline i loko o ka ʻaila kaʻa e ka chromatography kinoea.