Ka Nānā ʻana o LCMS: Ke nānā ʻana i nā Phthalates ma ka Baijiu Kina

I nā makahiki i hala iho nei, ua huki pinepine ʻia ka manaʻo o ka lehulehu i ka haumia phthalate i loko o ka Baijiu Kina (wai ʻona Kina) ma ke ʻano he mea hopohopo no ka palekana o ka meaʻai. ʻO kēia mau kemika, e hiki ke neʻe i loko o ka wai ʻona, e hoʻoweliweli i ke olakino kanaka. Ma waena o nā ʻano hana loiloi like ʻole, ua puka mai ka Liquid Chromatography-Mass Spectrometry (LCMS) ma ke ʻano he mea hana koʻikoʻi no ka hahai ʻana i nā phthalates ma ka Baijiu Kina, ma muli o kona ʻike kiʻekiʻe a me ka pololei.

Pnā hthalates: Nā mea hoʻohui i makemake ʻole ʻia ma ka Baijiu Kinaʻ

Hoʻohana pinepine ʻia nā phthalates, a i ʻole phthalic acid esters (PAEs), ma ke ʻano he plasticizers. Ma ka ʻōlelo Kina Baijiu, hiki ke kumu mai lākou mai:

1. Ka neʻe ʻana mai nā mea hoʻopili plastik;
2. Hoʻopili me nā paipu plastik a i ʻole nā ​​​​​​ipu i ka wā o ka hana ʻana;
3. Ka haumia ʻana o nā mea hoʻohui i ke kaiapuni;

ʻOiai ua pāpā ʻia ka hoʻohana ʻana i nā mea palaki i ka launa pololei ʻana me ka Baijiu Kina e nā lula aupuni, ke hopohopo nei ka neʻe ʻana mai kahi pae trace. ʻO ka lawe nui ʻana i nā phthalates i ka wā lōʻihi e hoʻopilikia i ka ʻōnaehana endocrine, me nā hopena kūpono i ka ulu ʻana o ke keiki a me ke olakino hānau hou.

LCMS: ʻO ka Molecular Detective no Phthalatesʻ

Hoʻohui ka Liquid Chromatography-Mass Spectrometry (LCMS) i ka hiki ke hoʻokaʻawale kiʻekiʻe o ka chromatography wai me ka ʻike kiʻekiʻe o ka spectrometry mass, e kūpono loa ana no ka nānā ʻana i nā hui trace i loko o nā matrices paʻakikī e like me ka Chinese Baijiu. ʻO nā pono nui:

• ʻIke kiʻekiʻe: ʻIke ʻia ma ng/mL a i ʻole nā ​​​​​​ʻano haʻahaʻa;
• Koho kiʻekiʻe: Ka ʻike pololei a me ka helu ʻana o nā phthalates he nui;
• Ka pono kiʻekiʻe: Ka nānā like ʻana o nā pahuhopu he nui i hoʻokahi injection;
• Ka mana kū'ē ikaika i ke komo ʻana: Hoʻēmi maikaʻi i nā hopena matrix mai ka Baijiu Kina;

Kaʻina Hana LCMS no ka ʻIke ʻana i ka Phthalate ma ka Baijiu Kinaʻ

1. Hoʻomākaukau Laʻanaʻ

· Hoʻoheheʻe ʻia a i ʻole ka hoʻokomo pololei ʻana (no nā laʻana haʻahaʻa haʻahaʻa);

· Ka nui o ka hoʻohaʻahaʻa ʻana o ka naikokene a me ka hoʻololi ʻana o ka mea hoʻoheheʻe;

1. Ka Hoʻokaʻawale ʻana o ka Chromatography Waiʻ

Ma ka hoʻohana ʻana i kahi kolamu chromatography pae hoʻohuli C18 me ka methanol/wai a i ʻole acetonitrile/wai ​​ma ke ʻano he pae lawe lima, hoʻohana ʻia ka gradient elution e hoʻokaʻawale i nā plasticizers like ʻole. ʻO nā pahuhopu ʻike maʻamau:

·Dimethyl phthalate (DMP)

·Diethyl phthalate (DEP)

·Dibutyl phthalate (DBP)

·Di (2-ethylhexyl) phthalate (DEHP)

1. Ka ʻIke ʻana i ka Mass Spectrometryʻ

ʻIke i ke ʻano ion maikaʻi ʻole me ke kumu ion pīpī uila (ESI) a i ʻole ke kumu ionization kemika kaomi lewa (APCI). Hoʻomaikaʻi ka spectrometer mass i ke koho ʻana a me ka ʻike o ka ʻike ʻana ma o ke ʻano nānā ʻana i nā hopena he nui (MRM).

Ka Hōʻoia ʻana o ke ʻAno Hana a me ka Mana Hoʻomalu Kūlanaʻ

Pono ka hōʻoia koʻikoʻi o kahi hana LCMS hilinaʻi:

• Pae laina: Uhi i nā ʻano i manaʻo ʻia me R² > 0.99;
• Palena o ka ʻike ʻana/ka helu ʻana: Ma ke ʻano maʻamau ma nā pae sub-μg/L, e kūlike ana me nā kūlana hoʻoponopono;
• Pololei a me ka pololei: Piʻi ka nui o ka hoʻōla ʻana o 85-115%, ka ʻokoʻa maʻamau pili <15%;
• Ke kikoʻī: Hōʻoia i ka ʻole o ke komo ʻana o nā piko i manaʻo ʻia;

Nā Pane ʻOihana a me ke Alakaʻi ʻana i nā Mea kūʻai akuʻ

Me ka holomua o ka ʻenehana ʻike a me nā lula koʻikoʻi, ua hoʻokō ka ʻoihana Baijiu Kina i nā hana e hōʻemi ai i nā pilikia phthalate:

1. Kaohi kumu: Hoʻopau mālie i nā ʻāpana plastik i ka hana ʻana;
2. Hoʻokele kaʻina hana: Hoʻonui ʻia ka nānā ʻana a me ka kaohi ʻana i nā mea maka;
3. Hoʻāʻo huahana hope loa: Nā ʻōnaehana nānā maikaʻi koʻikoʻi;

Ma ke ʻano he mea kūʻai aku, hiki iā mākou ke hana i kēia mau mea:

• Kūʻai mai nā lama kaulana ma o nā kahawai kūhelu;
• E nānā i ka pono o ka ʻōpala a pale i nā huahana i hōʻino ʻia;
• E mālama pono, e pale ana i nā mahana kiʻekiʻe a me ka mālama lōʻihi;

Nā Manaʻo no ka Wā e Hiki Mai Anaʻ

E hoʻomau ka LCMS i ka hana koʻikoʻi i ka ʻike ʻana i ka phthalate no ka Baijiu Kina. ʻO ka hoʻomaikaʻi mau ʻana i ka ʻike o ka mea kani a me ka hoʻonui ʻana i ke ʻano hana e hiki ai ke nānā wikiwiki a pololei hoʻi. ʻO ka hoʻomohala ʻana i nā ʻano hana loiloi multi-analyte e hōʻoia hou i ka hōʻoia piha o ka maikaʻi a me ka palekana.

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