{"id":4239,"date":"2025-12-30T00:00:47","date_gmt":"2025-12-29T16:00:47","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4239"},"modified":"2025-12-30T18:19:00","modified_gmt":"2025-12-30T10:19:00","slug":"how-an-infrared-spectrometer-enables-precise-molecular-characterization","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/vi\/news\/how-an-infrared-spectrometer-enables-precise-molecular-characterization\/","title":{"rendered":"L\u00e0m th\u1ebf n\u00e0o m\u1ed9t quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i cho ph\u00e9p \u0111\u1eb7c \u0111i\u1ec3m ph\u00e2n t\u1eed ch\u00ednh x\u00e1c"},"content":{"rendered":"

 <\/p>\n

\"L\u00e0m<\/div>\n

Ph\u1ed5 quang h\u1ed3ng ngo\u1ea1i (IR) l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong h\u00f3a h\u1ecdc ph\u00e2n t\u00edch. N\u00f3 gi\u00fap x\u00e1c \u0111\u1ecbnh v\u00e0 \u0111o l\u01b0\u1eddng c\u1ea5u tr\u00fac ph\u00e2n t\u1eed b\u1eb1ng c\u00e1ch \u00e1nh s\u00e1ng h\u1ed3ng ngo\u1ea1i t\u01b0\u01a1ng t\u00e1c v\u1edbi v\u1eadt li\u1ec7u. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng g\u00e2y thi\u1ec7t h\u1ea1i. C\u00e1c chuy\u00ean gia s\u1eed d\u1ee5ng n\u00f3 r\u1ea5t nhi\u1ec1u trong c\u00e1c nghi\u00ean c\u1ee9u v\u00e0 nh\u00e0 m\u00e1y b\u1edfi v\u00ec n\u00f3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t v\u00e0 cung c\u1ea5p quan \u0111i\u1ec3m r\u00f5 r\u00e0ng \u1edf c\u1ea5p \u0111\u1ed9 ph\u00e2n t\u1eed.<\/p>\n

Nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i<\/strong><\/h3>\n

Ph\u1ed5 c\u1ee7a m\u1ed9t ch\u1ea5t h\u1eefu c\u01a1 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 d\u1ea5u v\u00e2n tay c\u1ee7a n\u00f3. V\u1ec1 l\u00fd thuy\u1ebft, kh\u00f4ng c\u00f3 hai ch\u1ea5t kh\u00e1c nhau cung c\u1ea5p c\u00f9ng ph\u1ed5 h\u1ea5p th\u1ee5. \u0110\u1eb7c \u0111i\u1ec3m n\u00e0y cho ph\u00e9p ph\u1ed5 h\u1ed3ng ngo\u1ea1i ho\u1ea1t \u0111\u1ed9ng nh\u01b0 d\u1ea5u v\u00e2n tay ph\u00e2n t\u1eed \u0111\u1eb7c bi\u1ec7t. K\u1ebft qu\u1ea3 l\u00e0, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n c\u1ea3 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng b\u1eb1ng quang ph\u1ed5 IR. N\u00f3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac r\u00f5 r\u00e0ng.<\/p>\n

C\u00e1c v\u00f9ng quang ph\u1ed5 v\u00e0 s\u1ef1 li\u00ean quan ph\u00e2n t\u00edch c\u1ee7a ch\u00fang<\/strong><\/h3>\n

Ph\u1ed5 h\u1ed3ng ngo\u1ea1i bao g\u1ed3m ba khu v\u1ef1c ph\u1ed5 ch\u00ednh. H\u1ed3ng ngo\u1ea1i g\u1ea7n (NIR): 0,78-2,5 \u00b5m. H\u1ed3ng ngo\u1ea1i trung (MIR): 2,5-25 \u00b5m. H\u1ed3ng ngo\u1ea1i xa (FIR): 25-1000 \u00b5m. M\u1ed7i l\u0129nh v\u1ef1c c\u00f3 m\u1ee5c \u0111\u00edch ri\u00eang trong ph\u00e2n t\u00edch. . Ph\u1ed5 NIR t\u00ecm th\u1ea5y s\u1eed d\u1ee5ng trong l\u1ecdc d\u1ea7u m\u1ecf. N\u00f3 ph\u00f9 h\u1ee3p v\u1edbi h\u00f3a d\u1ea7u v\u00e0 polymer t\u1ed1t. Tuy nhi\u00ean, khu v\u1ef1c h\u1ed3ng ngo\u1ea1i trung quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 ki\u1ec3m tra c\u00e1c h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1. N\u00f3 bao g\u1ed3m c\u00e1c ch\u1ebf \u0111\u1ed9 rung c\u01a1 b\u1ea3n c\u1ee7a c\u00e1c tr\u00e1i phi\u1ebfu nh\u01b0 C = O, N-H v\u00e0 O-H. Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u1eeda s\u1ed5 quang ph\u1ed5 d\u1ef1a v\u00e0o c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m m\u1eabu. Ch\u00fang bao g\u1ed3m \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a ma tr\u1eadn, tr\u1ea1ng th\u00e1i v\u1eadt l\u00fd v\u00e0 th\u00e0nh ph\u1ea7n ph\u00e2n t\u1eed. Do \u0111\u00f3, n\u00f3 \u0111\u1ea3m b\u1ea3o thu th\u1eadp d\u1eef li\u1ec7u t\u1ed1t cho s\u1ef1 gi\u1ea3i th\u00edch v\u1eefng ch\u1eafc.<\/p>\n

C\u00e1c th\u00e0nh ph\u1ea7n v\u00e0 ch\u1ee9c n\u0103ng c\u1ee7a m\u1ed9t quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i<\/strong><\/h2>\n

M\u1ed9t quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i hi\u1ec7n t\u1ea1i k\u1ebft h\u1ee3p quang h\u1ecdc, \u0111i\u1ec7n t\u1eed v\u00e0 h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m m\u1ed9t c\u00e1ch th\u00f4ng minh. N\u00f3 nh\u1eb1m t\u1ea1o ra c\u00e1c \u0111\u1ecdc ph\u1ed5 ch\u00ednh x\u00e1c.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 thi\u1ebft b\u1ecb c\u1ed1t l\u00f5i<\/strong><\/h3>\n

Ngu\u1ed3n h\u1ed3ng ngo\u1ea1i<\/strong>C\u00e1c ngu\u1ed3n th\u00f4ng th\u01b0\u1eddng l\u00e0 Globar (silicon carbide) v\u00e0 Nernst glower (oxyt \u0111\u1ea5t hi\u1ebfm). Ch\u00fang cung c\u1ea5p b\u1ee9c x\u1ea1 \u1ed5n \u0111\u1ecbnh tr\u00ean c\u00e1c khu v\u1ef1c IR r\u1ed9ng r\u00e3i.<\/p>\n

B\u1ed9 t\u00e1ch ch\u00f9m v\u00e0 Interferometers<\/strong>Trong c\u00e1c m\u00e1y quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i bi\u1ebfn \u0111\u1ed5i Fourier (FTIR), m\u1ed9t m\u00e1y can thi\u1ec7p Michelson chia v\u00e0 k\u1ebft h\u1ee3p c\u00e1c ch\u00f9m. N\u00f3 t\u1ea1o ra m\u1ed9t interferogram. \u0110\u00e2y l\u00e0 m\u1ed9t t\u00edn hi\u1ec7u thay \u0111\u1ed5i gi\u1eef t\u1ea5t c\u1ea3 c\u00e1c chi ti\u1ebft quang ph\u1ed5.<\/p>\n

M\u00e1y d\u00f2<\/strong>Hai m\u00e1y d\u00f2 ph\u1ed5 bi\u1ebfn l\u00e0 DTGS (Deuterated Triglycine Sulfate). N\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng v\u00e0 \u1ed5n \u0111\u1ecbnh. M\u1ed9t lo\u1ea1i kh\u00e1c l\u00e0 MCT (Mercury Cadmium Telluride). N\u00f3 c\u00f3 \u0111\u1ed9 nh\u1ea1y c\u1ea3m m\u1ea1nh m\u1ebd v\u00e0 ph\u1ea3n \u1ee9ng nhanh ch\u00f3ng. Nh\u01b0ng n\u00f3 c\u1ea7n l\u00e0m m\u00e1t.<\/p>\n

K\u1ef9 thu\u1eadt x\u1eed l\u00fd m\u1eabu trong quang ph\u1ed5 IR<\/strong><\/h3>\n

Thi\u1ebft l\u1eadp m\u1eabu \u0111\u00fang \u0111\u1ea3m b\u1ea3o \u00e1nh s\u00e1ng IR ch\u1ea1m v\u00e0o ch\u1ea5t ph\u00e2n t\u00edch t\u1ed1t.<\/p>\n

Ch\u1ebf \u0111\u1ed9 truy\u1ec1n t\u1ea3i L\u1ea5y m\u1eabu<\/strong><\/h4>\n

Ph\u01b0\u01a1ng ph\u00e1p c\u0169 n\u00e0y g\u1eedi b\u1ee9c x\u1ea1 h\u1ed3ng ngo\u1ea1i th\u1eb3ng qua m\u1ed9t m\u1ea3nh m\u1ecfng ho\u1eb7c m\u1eabu \u00e9p. \u0110\u1ed1i v\u1edbi c\u00e1c ch\u1ea5t r\u1eafn, vi\u00ean kali bromua (KBr) ho\u1ea1t \u0111\u1ed9ng th\u01b0\u1eddng xuy\u00ean. Ch\u00fang \u0111\u1ec3 \u00e1nh s\u00e1ng IR \u0111i qua r\u00f5 r\u00e0ng. \u0110\u1ed1i v\u1edbi ch\u1ea5t l\u1ecfng, c\u00e1c t\u1ebf b\u00e0o c\u00f3 c\u1eeda s\u1ed5 natri clorua ho\u1eb7c canxi fluorua l\u00e0 ph\u1ed5 bi\u1ebfn.<\/p>\n

K\u1ef9 thu\u1eadt ph\u1ea3n x\u1ea1 t\u1ed5ng th\u1ec3 gi\u1ea3m (ATR)<\/strong><\/h4>\n

ATR l\u00e0m cho vi\u1ec7c l\u1ea5y m\u1eabu d\u1ec5 d\u00e0ng h\u01a1n. N\u00f3 b\u1ecf qua c\u00e1c b\u01b0\u1edbc chu\u1ea9n b\u1ecb kh\u00f3 kh\u0103n. ATR l\u00e0m cho vi\u1ec7c chu\u1ea9n b\u1ecb m\u1eabu d\u1ec5 d\u00e0ng h\u01a1n b\u1eb1ng c\u00e1ch cho ph\u00e9p \u0111o tr\u1ef1c ti\u1ebfp x\u1ea3y ra m\u00e0 kh\u00f4ng l\u00e0m m\u1ecfng ho\u1eb7c \u00e9p. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1ecfa s\u00e1ng cho ch\u1ea5t l\u1ecfng d\u00e0y ho\u1eb7c ch\u1ea5t r\u1eafn. N\u00f3 t\u1eadp trung v\u00e0o b\u1ec1 m\u1eb7t.<\/p>\n

Ph\u1ea3n x\u1ea1 khu\u1ebfch t\u00e1n (DRIFTS) v\u00e0 ph\u1ea3n x\u1ea1 ph\u00f3ng<\/strong><\/h4>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y m\u1edf r\u1ed9ng ki\u1ec3m tra IR \u0111\u1ebfn b\u1ed9t ho\u1eb7c m\u1eabu th\u00f4. DRIFTS l\u1ea5y \u00e1nh s\u00e1ng ph\u00e2n t\u00e1n t\u1eeb b\u1ed9t m\u1ecbn. Ph\u1ea3n chi\u1ebfu ph\u1ea3n chi\u1ebfu ki\u1ec3m tra b\u1ec1 m\u1eb7t b\u00f3ng. C\u1ea3 hai \u0111\u1ec1u th\u00eam c\u00e1c t\u00f9y ch\u1ecdn cho c\u00e1c h\u00ecnh d\u1ea1ng m\u1eabu.<\/p>\n

Thu th\u1eadp d\u1eef li\u1ec7u v\u00e0 gi\u1ea3i th\u00edch quang ph\u1ed5<\/strong><\/h2>\n

 <\/p>\n

\"M7<\/div>\n

Chuy\u1ec3n \u0111\u1ed5i interferogram th\u00f4 th\u00e0nh ph\u1ed5 r\u00f5 r\u00e0ng c\u1ea7n x\u1eed l\u00fd to\u00e1n h\u1ecdc m\u1ea1nh m\u1ebd. N\u00f3 c\u0169ng \u0111\u00f2i h\u1ecfi ph\u1ea3i bi\u1ebft r\u00f5 c\u00e1c m\u00f4 h\u00ecnh quang ph\u1ed5.<\/p>\n

X\u1eed l\u00fd t\u00edn hi\u1ec7u v\u00e0 thu\u1eadt to\u00e1n bi\u1ebfn \u0111\u1ed5i Fourier<\/strong><\/h3>\n

M\u00e1y quang ph\u1ed5 FTIR s\u1eed d\u1ee5ng bi\u1ebfn \u0111\u1ed5i Fourier \u0111\u1ec3 thay \u0111\u1ed5i interferogram th\u00e0nh quang ph\u1ed5 b\u00ecnh th\u01b0\u1eddng. C\u00e1c b\u01b0\u1edbc x\u1eed l\u00fd ch\u00ednh l\u00e0 nh\u1eefng b\u01b0\u1edbc n\u00e0y. Apodization: N\u00f3 l\u00e0m m\u1ecbn interferogram \u0111\u1ec3 c\u1eaft th\u00f9y b\u00ean quang ph\u1ed5. Zero-filling: N\u00f3 t\u0103ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i k\u1ef9 thu\u1eadt s\u1ed1 b\u1eb1ng c\u00e1ch th\u00eam c\u00e1c \u0111i\u1ec3m d\u1eef li\u1ec7u. S\u1eeda ch\u1eefa giai \u0111o\u1ea1n: N\u00f3 s\u1eafp x\u1ebfp \u0111\u1ec9nh ph\u1ed5 ph\u1ea3i. C\u00e1c b\u01b0\u1edbc nh\u01b0 v\u1eady l\u00e0m t\u0103ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i, \u0111\u1ed9 s\u1eafc n\u00e9t \u0111\u1ec9nh cao v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u. Giao nhi\u1ec7m \u0111\u1ec9nh cao v\u00e0 x\u00e1c \u0111\u1ecbnh nh\u00f3m ch\u1ee9c n\u0103ng<\/p>\n

M\u1ed7i b\u0103ng h\u1ea5p th\u1ee5 li\u00ean k\u1ebft \u0111\u1ebfn m\u1ed9t s\u1ed1 chuy\u1ec3n \u0111\u1ed9ng nh\u1ea5t \u0111\u1ecbnh g\u1eafn k\u1ebft v\u1edbi c\u00e1c li\u00ean k\u1ebft h\u00f3a h\u1ecdc.<\/p>\n

V\u00ed d\u1ee5:<\/p>\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n
Nh\u00f3m ch\u1ee9c n\u0103ng<\/strong><\/th>\nPh\u1ea1m vi h\u1ea5p th\u1ee5 IR \u0111i\u1ec3n h\u00ecnh<\/strong><\/th>\n<\/tr>\n<\/thead>\n
O-H (r\u01b0\u1ee3u)<\/td>\n3200-3550 cm \u207b\u00b9<\/td>\n<\/tr>\n
C = O (carbonyl)<\/td>\n1650-1750 cm \u207b\u00b9<\/td>\n<\/tr>\n
N-H (amine)<\/td>\n3300-3500 cm \u207b\u00b9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Th\u01b0 vi\u1ec7n quang ph\u1ed5 gi\u00fap ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c m\u1ee5c \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn \u0111\u1ec3 ph\u00e1t hi\u1ec7n h\u1ee3p ch\u1ea5t. V\u1edbi ph\u1ed5 IR \u0111\u1ed9c \u0111\u00e1o c\u1ee7a c\u00e1c ch\u1ea5t, b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng th\u00f4ng qua quang ph\u1ed5 IR.<\/p>\n

N\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ph\u00e2n t\u1eed v\u1edbi c\u00f4ng ngh\u1ec7 FTIR<\/strong><\/h2>\n

H\u00f4m nay’ C\u00e1c c\u00f4ng c\u1ee5 FTIR cung c\u1ea5p \u0111\u1ed9 ch\u00ednh x\u00e1c cao nh\u1edd c\u00e1c \u00fd t\u01b0\u1edfng m\u1edbi trong quang h\u1ecdc, \u0111i\u1ec7n t\u1eed v\u00e0 ph\u1ea7n m\u1ec1m.<\/p>\n

\u0110\u1ed9 ph\u00e2n gi\u1ea3i, \u0111\u1ed9 nh\u1ea1y c\u1ea3m v\u00e0 t\u1ed1i \u01b0u h\u00f3a t\u00edn hi\u1ec7u \u0111\u1ebfn ti\u1ebfng \u1ed3n<\/strong><\/h3>\n

\u0110\u1ed9 ph\u00e2n gi\u1ea3i quang h\u1ecdc \u0111\u1ecbnh h\u00ecnh b\u1ea1n ph\u00e1t hi\u1ec7n c\u00e1c \u0111\u1ec9nh g\u1ea7n nhau nh\u01b0 th\u1ebf n\u00e0o. \u0110\u1ed9 ph\u00e2n gi\u1ea3i cao quan tr\u1ecdng cho c\u00e1c m\u1eabu h\u1ed7n h\u1ee3p ho\u1eb7c thay \u0111\u1ed5i c\u1ea5u tr\u00fac nh\u1ecf. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p nh\u01b0 t\u00ednh trung b\u00ecnh m\u1ed9t s\u1ed1 qu\u00e9t ho\u1eb7c s\u1eed d\u1ee5ng m\u00e1y d\u00f2 l\u00e0m m\u00e1t c\u1eaft gi\u1ea3m ti\u1ebfng \u1ed3n. Do \u0111\u00f3, h\u1ecd l\u00e0m cho c\u00e1c t\u00edn hi\u1ec7u r\u00f5 r\u00e0ng h\u01a1n.<\/p>\n

Kh\u1ea3 n\u0103ng ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng c\u1ee7a h\u1ec7 th\u1ed1ng FTIR<\/strong><\/h3>\n

FTIR v\u01b0\u1ee3t xa vi\u1ec7c ch\u1ec9 ph\u00e1t hi\u1ec7n ra nh\u1eefng th\u1ee9. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh hi\u1ec7u chu\u1ea9n t\u1eeb \u0111\u1ecbnh lu\u1eadt Beer-Lambert ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea nh\u01b0 Ph\u1ea7n thu h\u1ed3i vu\u00f4ng nh\u1ecf nh\u1ea5t (PLS), b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ecbnh l\u01b0\u1ee3ng ch\u00ednh x\u00e1c. \u0110i\u1ec1u n\u00e0y ho\u1ea1t \u0111\u1ed9ng ngay c\u1ea3 trong c\u00e1c thi\u1ebft l\u1eadp h\u1ed7n h\u1ee3p. \u0110\u00fang v\u1eady. V\u1edbi c\u00e1c m\u00f4 h\u00ecnh hi\u1ec7u chu\u1ea9n d\u1ef1a tr\u00ean \u0111\u1ecbnh lu\u1eadt Beer-Lambert ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111a bi\u1ebfn nh\u01b0 h\u1ed3i quy PLS, m\u00e1y ph\u1ed5 h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 \u0111o n\u1ed3ng \u0111\u1ed9 c\u1ee7a m\u1ed9t s\u1ed1 h\u1ee3p ch\u1ea5t trong h\u1ed7n h\u1ee3p m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c.<\/p>\n

C\u00e1c \u1ee9ng d\u1ee5ng tr\u00ean c\u00e1c l\u0129nh v\u1ef1c khoa h\u1ecdc \u0111a d\u1ea1ng<\/strong><\/h2>\n

S\u1ef1 linh ho\u1ea1t c\u1ee7a m\u00e1y ph\u1ed5 h\u1ed3ng ngo\u1ea1i \u0111\u00e3 l\u00e0m cho ch\u00fang tr\u1edf n\u00ean quan tr\u1ecdng trong nhi\u1ec1u l\u0129nh v\u1ef1c khoa h\u1ecdc.<\/p>\n

Ph\u00e2n t\u00edch h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1 v\u00e0 v\u00f4 h\u1eefu c\u01a1<\/strong><\/h3>\n

Ph\u1ed5 h\u1ed3ng ngo\u1ea1i gi\u00fap ph\u00e1t hi\u1ec7n c\u00e1c nh\u00f3m ch\u1ee9c n\u0103ng trong c\u00e1c polymer nh\u00e2n t\u1ea1o, thu\u1ed1c, h\u00f3a ch\u1ea5t n\u00f4ng nghi\u1ec7p v\u00e0 c\u00e1c lo\u1ea1i kh\u00e1c. N\u00f3 c\u0169ng t\u00ecm th\u1ea5y rung kim lo\u1ea1i-li\u00ean k\u1ebft trong c\u00e1c thi\u1ebft l\u1eadp v\u00f4 c\u01a1 \u0111\u1ec3 ki\u1ec3m tra c\u1ea5u tr\u00fac. Quang ph\u1ed5 l\u00e0 m\u1ed9t k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u1ea5u tr\u00fac c\u1ee7a c\u00e1c h\u1ee3p ch\u1ea5t h\u1eefu c\u01a1.<\/p>\n

Theo d\u00f5i th\u1eddi gian th\u1ef1c trong c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p<\/strong><\/h3>\n

Trong c\u00e1c nh\u00e0 m\u00e1y, c\u00e1c c\u00f4ng c\u1ee5 IR ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c thi\u1ebft l\u1eadp C\u00f4ng ngh\u1ec7 ph\u00e2n t\u00edch quy tr\u00ecnh (PAT) \u0111\u1ec3 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng. C\u00e1c c\u00f4ng ty d\u1ea7u s\u1eed d\u1ee5ng quang ph\u1ed5 IR v\u00e0 quang ph\u1ed5 Raman \u0111\u1ec3 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m tr\u1ef1c tuy\u1ebfn. C\u1ea3m bi\u1ebfn FTIR n\u1ed9i tuy\u1ebfn cho ph\u00e9p ki\u1ec3m tra trang \u0111i\u1ec3m th\u1eddi gian th\u1ef1c trong khi l\u00e0m.<\/p>\n

\u0110i\u1ec1u tra m\u00f4i tr\u01b0\u1eddng v\u00e0 ph\u00e1p y<\/strong><\/h3>\n

Ph\u1ed5 \u0111o h\u1ed3ng ngo\u1ea1i h\u1ed7 tr\u1ee3 r\u1ea5t nhi\u1ec1u trong an to\u00e0n m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00f4ng vi\u1ec7c ph\u00e1p y. Ph\u1ed5 \u0111o h\u1ed3ng ngo\u1ea1i \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c khoa h\u1ecdc ph\u00e1p y. N\u00f3 ph\u00e1t hi\u1ec7n c\u00e1c ch\u1ea5t \u00f4 nhi\u1ec5m trong kh\u00f4ng kh\u00ed, n\u01b0\u1edbc ho\u1eb7c \u0111\u1ea5t. N\u00f3 c\u0169ng ki\u1ec3m tra b\u1eb1ng ch\u1ee9ng d\u1ea5u v\u1ebft nh\u01b0 s\u1ee3i, ch\u1ea5t d\u00ednh ho\u1eb7c m\u1ef1c v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 l\u1ea5y m\u1eabu nh\u1ecf.<\/p>\n

PERSEE: M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e1ng tin c\u1eady c\u1ee7a m\u00e1y quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i<\/strong><\/h2>\n

 <\/p>\n

\"PERSEE\"<\/div>\n

\u0110\u1ed1i v\u1edbi ti\u1ebfn b\u1ed9 khoa h\u1ecdc, c\u00e1c c\u00f4ng c\u1ee5 v\u1eefng ch\u1eafc l\u00e0 ch\u00eca kh\u00f3a. PERSEE<\/strong><\/a> \u0111\u00e3 tr\u1edf th\u00e0nh m\u1ed9t t\u00ean h\u00e0ng \u0111\u1ea7u tr\u00ean to\u00e0n th\u1ebf gi\u1edbi trong vi\u1ec7c s\u1ea3n xu\u1ea5t c\u00e1c thi\u1ebft b\u1ecb ph\u00e2n t\u00edch ti\u00ean ti\u1ebfn.<\/p>\n

T\u1ed5ng quan v\u1ec1 chuy\u00ean m\u00f4n c\u00f4ng ngh\u1ec7 c\u1ee7a PERSEE<\/strong><\/h3>\n

Persee l\u00e0 m\u1ed9t c\u00e1i t\u01b0\u01a1i c\u00f4ng ty c\u00f4ng ngh\u1ec7 cao<\/strong><\/a> b\u1eaft \u0111\u1ea7u v\u00e0o n\u0103m 1991. N\u00f3 pha tr\u1ed9n R & amp; D, s\u1ea3n xu\u1ea5t v\u00e0 b\u00e1n h\u00e0ng theo c\u00e1c quy t\u1eafc ch\u1ea5t l\u01b0\u1ee3ng ch\u1eb7t ch\u1ebd nh\u01b0 ch\u1ee9ng nh\u1eadn ISO9001 v\u00e0 CE. H\u01a1n 30% nh\u00e2n vi\u00ean c\u1ee7a m\u00ecnh l\u00e0m vi\u1ec7c trong R&D D. V\u00ec v\u1eady, PERSEE mang l\u1ea1i nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi m\u1edbi trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 gi\u00e1o d\u1ee5c, nghi\u00ean c\u1ee9u thu\u1ed1c, n\u00f4ng nghi\u1ec7p, ki\u1ec3m tra h\u00f3a ch\u1ea5t d\u1ea7u v\u00e0 theo d\u00f5i m\u00f4i tr\u01b0\u1eddng.<\/p>\n

C\u00e1c s\u1ea3n ph\u1ea9m ch\u00ednh trong danh m\u1ee5c \u0111\u1ea7u t\u01b0 quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i<\/strong><\/h3>\n

T\u00ednh n\u0103ng v\u00e0 l\u1ee3i \u00edch c\u1ee7a d\u00f2ng FTIR8000<\/strong><\/h4>\n

FTIR8000<\/strong><\/a> c\u00e1c c\u00f4ng c\u1ee5 lo\u1ea1t cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i m\u1ea1nh m\u1ebd tr\u00ean m\u1ed9t ph\u1ea1m vi ph\u1ed5 r\u1ed9ng. C\u00e1c \u0111\u01a1n v\u1ecb m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi c\u00f4ng vi\u1ec7c ph\u00f2ng th\u00ed nghi\u1ec7m h\u00e0ng ng\u00e0y n\u01a1i c\u1ea7n ki\u1ec3m tra ph\u00e2n t\u1eed ch\u00ednh x\u00e1c.<\/p>\n

\u0110i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a h\u1ec7 th\u1ed1ng FTIR di \u0111\u1ed9ng M7<\/strong><\/h4>\n

M7 t\u1ee9 c\u1ef1c \u0111\u01a1n GC-MS<\/strong><\/a> l\u00e0 m\u00e1y quang ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng hi\u1ec7u su\u1ea5t cao th\u1ebf h\u1ec7 m\u1edbi \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf b\u1edfi Persee, ng\u01b0\u1eddi duy nh\u1ea5t n\u1eafm quy\u1ec1n s\u1edf h\u1eefu tr\u00ed tu\u1ec7. S\u1ef1 x\u00e2y d\u1ef1ng nh\u1ecf c\u1ee7a n\u00f3 duy tr\u00ec s\u1ee9c m\u1ea1nh ph\u00e2n t\u00edch m\u1ea1nh m\u1ebd. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 t\u1ed1t cho c\u00f4ng vi\u1ec7c th\u1ef1c \u0111\u1ecba v\u00e0 nghi\u00ean c\u1ee9u nghi\u00eam ng\u1eb7t. M7 MS c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong an to\u00e0n th\u1ef1c ph\u1ea9m, b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng, c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t v\u1eadt li\u1ec7u, khoa h\u1ecdc cu\u1ed9c s\u1ed1ng, nghi\u00ean c\u1ee9u y h\u1ecdc, \u0111i\u1ec1u tra h\u00ecnh s\u1ef1 v\u00e0 nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c. N\u00f3 c\u00f3 c\u00e1c b\u1ed9 ph\u1eadn \u0111\u1eb7c bi\u1ec7t nh\u01b0 c\u00e1c ngu\u1ed3n EI s\u1ee3i k\u00e9p v\u00e0 m\u00e1y b\u01a1m ph\u00e2n t\u1eed turbo hi\u1ec7u qu\u1ea3 cao t\u1eeb \u0110\u1ee9c ’ s Pfeiffer ch\u00e2n kh\u00f4ng cho c\u00f4ng vi\u1ec7c v\u1eefng ch\u1eafc.<\/p>\n

Vai tr\u00f2 c\u1ee7a m\u00e1y quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i trong ph\u00e2n t\u00edch ph\u00e2n t\u1eed<\/strong><\/h2>\n

M\u00e1y quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i v\u1eabn l\u00e0 c\u00f4ng c\u1ee5 c\u1ea7n thi\u1ebft cho c\u00e1c nh\u00e0 khoa h\u1ecdc mu\u1ed1n hi\u1ec3u s\u00e2u v\u1ec1 ph\u00e2n t\u1eed. Th\u00f4ng qua c\u00e1c b\u1ed9 ph\u1eadn quang h\u1ecdc th\u00f4ng minh nh\u01b0 m\u00e1y can thi\u1ec7p v\u00e0 m\u00e1y d\u00f2 s\u1eafc n\u00e9t nh\u01b0 tinh th\u1ec3 MCT ho\u1eb7c DTGS. Th\u00eam v\u00e0o \u0111\u00f3, c\u00e1c c\u00e1ch l\u1ea5y m\u1eabu \u0111a d\u1ea1ng bao g\u1ed3m ATR v\u00e0 DRIFTS. C\u00e1c c\u00f4ng c\u1ee5 IR hi\u1ec7n \u0111\u1ea1i cho ph\u00e9p ph\u00e1t hi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ki\u1ec3m tra \u0111\u1ecbnh l\u01b0\u1ee3ng m\u1ea1nh m\u1ebd. C\u00f4ng ngh\u1ec7 FTIR t\u0103ng \u0111\u1ed9 ph\u00e2n gi\u1ea3i v\u00e0 ni\u1ec1m tin trong c\u00e1c thi\u1ebft l\u1eadp kh\u00f3 kh\u0103n.<\/p>\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/strong><\/h3>\n

Q1. S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa quang ph\u1ed5 IR ph\u00e2n t\u00e1n v\u00e0 FTIR l\u00e0 g\u00ec?<\/strong><\/p>\n

A1: Dispersive IR s\u1eed d\u1ee5ng m\u00e1y monochromator \u0111\u1ec3 qu\u00e9t c\u00e1c b\u01b0\u1edbc s\u00f3ng ri\u00eang l\u1ebb theo tr\u00ecnh t\u1ef1, trong khi FTIR thu th\u1eadp t\u1ea5t c\u1ea3 c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u00f9ng m\u1ed9t l\u00fac b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e1y can thi\u1ec7p. FTIR cung c\u1ea5p thu th\u1eadp d\u1eef li\u1ec7u nhanh h\u01a1n, t\u1ef7 l\u1ec7 t\u00edn hi\u1ec7u-ti\u1ebfng \u1ed3n cao h\u01a1n v\u00e0 \u0111\u1ed9 ph\u00e2n gi\u1ea3i ph\u1ed5 t\u1ed1t h\u01a1n.<\/p>\n

Q2. M\u00e1y ph\u1ed5 h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng kh\u00f4ng?<\/strong><\/p>\n

A2: V\u00e2ng. S\u1eed d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh hi\u1ec7u chu\u1ea9n d\u1ef1a tr\u00ean \u0111\u1ecbnh lu\u1eadt Beer-Lambert ho\u1eb7c c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111a bi\u1ebfn nh\u01b0 h\u1ed3i quy PLS, m\u00e1y quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i c\u00f3 th\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng ch\u00ednh x\u00e1c n\u1ed3ng \u0111\u1ed9 c\u1ee7a c\u00e1c h\u1ee3p ch\u1ea5t c\u1ee5 th\u1ec3 trong h\u1ed7n h\u1ee3p.<\/p>\n

Q3. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 l\u1ea5y m\u1eabu ATR c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng s\u1eed d\u1ee5ng trong quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i?<\/strong><\/p>\n

A3: ATR \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c chu\u1ea9n b\u1ecb m\u1eabu b\u1eb1ng c\u00e1ch cho ph\u00e9p \u0111o tr\u1ef1c ti\u1ebfp m\u00e0 kh\u00f4ng c\u1ea7n pha lo\u00e3ng ho\u1eb7c h\u00ecnh th\u00e0nh vi\u00ean. N\u00f3 \u0111\u1eb7c bi\u1ec7t h\u1eefu \u00edch cho ch\u1ea5t r\u1eafn ho\u1eb7c ch\u1ea5t l\u1ecfng nh\u1edbt do \u0111\u1ed9 s\u00e2u th\u00e2m nh\u1eadp t\u1ed1i thi\u1ec3u c\u1ee7a n\u00f3 v\u00e0o b\u1ec1 m\u1eb7t m\u1eabu.<\/p>","protected":false},"excerpt":{"rendered":"

  Infrared (IR) spectroscopy serves as a key tool in analytical chemistry. It helps identify and measure molecular structures by how infrared light interacts with materials. This method causes no damage. Experts use it a lot in studies and factories because it works well and gives clear views at the molecule level. Fundamental Principles of […]<\/p>\n","protected":false},"author":1,"featured_media":4234,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[38,37],"tags":[],"class_list":["post-4239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-information","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/comments?post=4239"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4239\/revisions"}],"predecessor-version":[{"id":4240,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4239\/revisions\/4240"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media\/4234"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media?parent=4239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/categories?post=4239"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/tags?post=4239"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}