Kev Tshawb Fawb LCMS: Tshawb Nrhiav Phthalates hauv Baijiu Suav

Nyob rau xyoo tas los no, kev ua qias tuaj ntawm phthalate hauv Suav Baijiu (cawv Suav) tau ua rau pej xeem pom ntau zaus ua qhov kev txhawj xeeb txog kev nyab xeeb ntawm cov zaub mov. Cov tshuaj lom neeg no, uas tuaj yeem nkag mus rau hauv cov cawv, ua rau muaj kev pheej hmoo rau tib neeg kev noj qab haus huv. Ntawm ntau yam kev tshuaj xyuas, Liquid Chromatography-Mass Spectrometry (LCMS) tau tshwm sim ua lub cuab yeej tseem ceeb rau kev taug qab phthalates hauv Suav Baijiu, vim nws qhov kev nkag siab siab thiab raug.

Phthalates: Cov Khoom Ntxiv Tsis Xav Tau hauv Suav Baijiu​

Phthalates, lossis phthalic acid esters (PAEs), feem ntau yog siv ua cov yas. Hauv Suav Baijiu, lawv tuaj yeem los ntawm:

1. Kev tsiv teb tsaws chaw los ntawm cov khoom siv ntim khoom yas;
2. Kev sib cuag nrog cov kav dej yas lossis cov thawv thaum lub sijhawm tsim khoom;
3. Kev ua qias tuaj ntawm cov khoom xyaw ib puag ncig;

Txawm hais tias kev siv cov khoom yas uas sib cuag ncaj qha nrog Suav Baijiu raug txwv los ntawm cov cai hauv tebchaws, kev tsiv teb tsaws chaw tseem yog qhov txhawj xeeb. Kev noj ntau dhau ntawm phthalates mus sij hawm ntev tuaj yeem cuam tshuam rau lub cev endocrine, nrog rau kev cuam tshuam rau kev loj hlob ntawm menyuam yaus thiab kev noj qab haus huv ntawm kev yug me nyuam.

LCMS: Tus Kws Tshawb Fawb Txog Phthalates​

Kev Siv Kua Chromatography-Mass Spectrometry (LCMS) muab kev sib cais siab ntawm cov kua chromatography nrog rau kev nkag siab siab ntawm cov mass spectrometry, ua rau nws tsim nyog rau kev tshuaj xyuas cov tshuaj sib xyaw hauv cov matrices nyuaj xws li Suav Baijiu. Cov txiaj ntsig tseem ceeb suav nrog:

• Kev rhiab heev: Kev kuaj pom ntawm ng/mL lossis qis dua;
• Kev xaiv siab: Kev txheeb xyuas thiab ntsuas qhov tseeb ntawm ntau yam phthalates;
• Kev ua haujlwm zoo: Kev tshuaj xyuas ntau lub hom phiaj tib lub sijhawm hauv ib qho kev txhaj tshuaj;
• Muaj peev xwm tiv thaiv kev cuam tshuam zoo: Ua kom zoo dua cov teebmeem matrix los ntawm Suav Baijiu;

LCMS Workflow rau Kev Tshawb Nrhiav Phthalate hauv Suav Baijiu​

1. Kev Npaj Qauv​

· Kev sib xyaw ua ke los yog kev txhaj tshuaj ncaj qha (rau cov qauv qis concentration);

· Kev sib xyaw ua ke ntawm cov pa roj nitrogen thiab kev sib pauv cov kuab tshuaj;

1. Kev Sib Cais Chromatography Ua Kua​

Siv lub C18 reverse phase chromatography column nrog methanol/dej los yog acetonitrile/dej ua theem mobile, gradient elution siv los cais cov plasticizers sib txawv. Cov hom phiaj nrhiav pom feem ntau suav nrog:

· Dimethyl phthalate (DMP)

· Diethyl phthalate (DEP)

· Dibutyl phthalate (DBP)

· Di (2-ethylhexyl) phthalate (DEHP)

1. Kev Tshawb Fawb Txog Qhov Loj​

Tshawb nrhiav hauv hom ion tsis zoo nrog lub tshuab hluav taws xob tsuag ion qhov chaw (ESI) lossis qhov chaw tshuaj lom neeg ionization siab (APCI). Lub tshuab ntsuas qhov loj txhim kho qhov kev xaiv thiab kev rhiab heev ntawm kev tshawb pom los ntawm ntau hom kev tshuaj xyuas kev teb (MRM) hom.

Kev Txheeb Xyuas Txoj Kev thiab Kev Tswj Xyuas Zoo​

Ib txoj kev LCMS uas ntseeg tau yuav tsum tau muaj kev lees paub zoo:

• Kab ntau yam: Npog qhov xav tau ntawm cov concentration nrog R² > 0.99;
• Kev txwv ntawm kev kuaj pom/kev ntsuas: Feem ntau ntawm cov theem sub-μg/L, ua raws li cov qauv kev cai lij choj;
• Kev raug thiab qhov tseeb: Cov nqi rov qab zoo ntawm Spike ntawm 85–115%, qhov sib txawv ntawm tus qauv <15%;
• Kev Tshwj Xeeb: Xyuas kom meej tias lub hom phiaj siab tshaj plaws tsis muaj kev cuam tshuam;

Cov Lus Teb ntawm Kev Lag Luam thiab Cov Lus Qhia rau Cov Neeg Siv Khoom​

Nrog kev nce qib hauv kev siv tshuab nrhiav thiab cov cai nruj dua, kev lag luam Baijiu Suav tau siv cov kev ntsuas los txo cov kev pheej hmoo phthalate:

1. Kev tswj qhov chaw: Maj mam tshem tawm cov khoom yas hauv kev tsim khoom;
2. Kev tswj xyuas cov txheej txheem: Kev saib xyuas zoo dua thiab kev tswj cov khoom siv raw;
3. Kev kuaj xyuas khoom kawg: Cov txheej txheem tshuaj xyuas zoo;

Ua cov neeg siv khoom, peb tuaj yeem ua cov hauv qab no:

• Yuav khoom los ntawm cov npe nrov los ntawm cov channel raug cai;
• Tshawb xyuas qhov kev ruaj ntseg ntawm cov ntim khoom thiab zam cov khoom puas tsuaj;
• Khaws cia kom zoo, tsis txhob kub heev thiab khaws cia ntev;

Kev Xav Txog Yav Tom Ntej​

LCMS yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev tshawb nrhiav phthalate rau Suav Baijiu. Kev txhim kho tas mus li ntawm kev nkag siab ntawm cov cuab yeej thiab kev ua kom zoo dua qub yuav ua rau kev tshuaj xyuas sai dua thiab meej dua. Kev tsim cov txheej txheem tshuaj ntsuam ntau yam yuav ua kom ntseeg tau tias muaj txiaj ntsig zoo thiab kev nyab xeeb.

Do you have questions about Chinese Baijiu testing? We welcome discussions via email at international@bfrl.com.cn.