{"id":5825,"date":"2026-11-10T00:00:34","date_gmt":"2026-11-09T16:00:34","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=5825"},"modified":"2026-11-09T16:42:52","modified_gmt":"2026-11-09T08:42:52","slug":"why-beer-lambert-law-fails-at-high-concentrations","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/vi\/news\/why-beer-lambert-law-fails-at-high-concentrations","title":{"rendered":"V\u00ec sao \u0111\u1ecbnh lu\u1eadt Beer-Lambert kh\u00f4ng c\u00f2n hi\u1ec7u l\u1ef1c \u1edf n\u1ed3ng \u0111\u1ed9 cao?"},"content":{"rendered":"

\"V\u00ec<\/p>\n

\u0110\u1ecbnh lu\u1eadt Beer-Lambert l\u00e0 n\u1ec1n t\u1ea3ng c\u1ee7a ph\u00e9p \u0111o quang ph\u1ed5 th\u00f4ng th\u01b0\u1eddng: trong \u0111i\u1ec1u ki\u1ec7n th\u00edch h\u1ee3p, \u0111\u1ed9 h\u1ea5p th\u1ee5 t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi n\u1ed3ng \u0111\u1ed9 v\u00e0 chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng truy\u1ec1n quang. M\u1ed1i quan h\u1ec7 n\u00e0y r\u1ea5t m\u1ea1nh m\u1ebd v\u00ec n\u00f3 bi\u1ebfn ph\u00e9p \u0111o \u00e1nh s\u00e1ng th\u00e0nh k\u1ebft qu\u1ea3 \u0111\u1ecbnh l\u01b0\u1ee3ng. Tuy nhi\u00ean, n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 v\u00f4 h\u1ea1n. Khi n\u1ed3ng \u0111\u1ed9 t\u0103ng l\u00ean, \u0111\u01b0\u1eddng cong hi\u1ec7u chu\u1ea9n c\u00f3 th\u1ec3 b\u1ecb u\u1ed1n cong, ph\u1ea7n d\u01b0 c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng v\u00e0 \u0111\u1ed9 h\u1ea5p th\u1ee5 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o c\u00f3 th\u1ec3 kh\u00f4ng c\u00f2n th\u1ec3 hi\u1ec7n n\u1ed3ng \u0111\u1ed9 m\u1ed9t c\u00e1ch tuy\u1ebfn t\u00ednh \u0111\u00e1ng tin c\u1eady n\u1eefa.<\/p>\n

K\u1ebft qu\u1ea3 cao kh\u00f4ng t\u1ef1 \u0111\u1ed9ng c\u00f3 ngh\u0129a l\u00e0 h\u1ee3p ch\u1ea5t \u0111\u00e3 thay \u0111\u1ed5i ho\u1eb7c thi\u1ebft b\u1ecb b\u1ecb h\u1ecfng. C\u00e2u h\u1ecfi \u0111\u1ea7u ti\u00ean l\u00e0 li\u1ec7u s\u1ef1 sai l\u1ec7ch \u0111\u1ebfn t\u1eeb h\u1ec7 th\u1ed1ng quang h\u1ecdc, th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a m\u1eabu hay c\u00e1ch tr\u00ecnh b\u00e0y m\u1eabu. S\u1ef1 ph\u00e2n bi\u1ec7t \u0111\u00f3 r\u1ea5t quan tr\u1ecdng trong c\u00f4ng vi\u1ec7c x\u00e1c \u0111\u1ecbnh n\u1ed3ng \u0111\u1ed9 b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p UV-Vis v\u00ec vi\u1ec7c pha lo\u00e3ng, l\u1ef1a ch\u1ecdn b\u01b0\u1edbc s\u00f3ng, chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng truy\u1ec1n c\u1ee7a t\u1ebf b\u00e0o v\u00e0 b\u0103ng th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 kh\u00f4i ph\u1ee5c l\u1ea1i ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng h\u1eefu \u00edch, trong khi c\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u00e1c l\u1ea1i c\u1ea7n ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c.<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 h\u1ea5p th\u1ee5 cao \u0111\u1ebfn ph\u00e9p \u0111o<\/b><\/strong><\/h2>\n

\u1ede \u0111\u1ed9 h\u1ea5p th\u1ee5 cao, r\u1ea5t \u00edt \u00e1nh s\u00e1ng h\u1eefu \u00edch \u0111\u1ebfn \u0111\u01b0\u1ee3c b\u1ed9 \u0434\u0435\u0442\u0435\u043a\u0442\u043e\u0440. \u00c1nh s\u00e1ng l\u1ea1c, gi\u1edbi h\u1ea1n c\u1ee7a b\u1ed9 \u0434\u0435\u0442\u0435\u043a\u0442\u043e\u0440, s\u1ef1 kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u1ee7a ngu\u1ed3n v\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn b\u01b0\u1edbc s\u00f3ng kh\u00f4ng ho\u00e0n h\u1ea3o sau \u0111\u00f3 s\u1ebd c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn h\u01a1n \u0111\u1ebfn t\u00edn hi\u1ec7u bi\u1ec3u ki\u1ebfn. K\u1ebft qu\u1ea3 c\u00f3 th\u1ec3 ch\u1eefng l\u1ea1i thay v\u00ec ti\u1ebfp t\u1ee5c t\u0103ng khi n\u1ed3ng \u0111\u1ed9 t\u0103ng. M\u1ed9t \u0111\u01b0\u1eddng cong c\u00f3 th\u1ec3 tr\u00f4ng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c n\u1ebfu ch\u1ec9 xem x\u00e9t c\u00e1c \u0111i\u1ec3m cu\u1ed1i, v\u00ec v\u1eady h\u00e3y ki\u1ec3m tra ph\u1ea7n d\u01b0, h\u00e0nh vi l\u1eb7p l\u1ea1i v\u00e0 ph\u1ed5 th\u1ef1c t\u1ebf thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t gi\u00e1 tr\u1ecb t\u01b0\u01a1ng quan duy nh\u1ea5t.<\/p>\n

H\u00e3y ki\u1ec3m tra t\u00ednh tuy\u1ebfn t\u00ednh tr\u01b0\u1edbc khi k\u1ebft lu\u1eadn \u0111\u00f3 l\u00e0 l\u1ed7i h\u00f3a h\u1ecdc.<\/b><\/strong><\/h3>\n

Chu\u1ea9n b\u1ecb m\u1ed9t d\u00e3y n\u1ed3ng \u0111\u1ed9 bao ph\u1ee7 ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec1 xu\u1ea5t v\u00e0 \u0111o ch\u00fang b\u1eb1ng c\u00f9ng m\u1ed9t t\u1ebf b\u00e0o, dung m\u00f4i, b\u01b0\u1edbc s\u00f3ng v\u00e0 b\u0103ng th\u00f4ng. T\u00ecm ki\u1ebfm \u0111i\u1ec3m u\u1ed1n c\u00f3 h\u1ec7 th\u1ed1ng, s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 d\u1ed1c ho\u1eb7c s\u1ef1 gia t\u0103ng bi\u1ebfn thi\u00ean \u1edf c\u00e1c m\u1ee9c cao h\u01a1n. Sau \u0111\u00f3, l\u1eb7p l\u1ea1i c\u00e1c m\u1ee9c \u0111\u00e3 ch\u1ecdn sau khi pha lo\u00e3ng. N\u1ebfu k\u1ebft qu\u1ea3 sau khi pha lo\u00e3ng tr\u1edf l\u1ea1i m\u1ed1i quan h\u1ec7 \u0111\u00e3 thi\u1ebft l\u1eadp, th\u00ec ph\u1ea1m vi ban \u0111\u1ea7u c\u00f3 th\u1ec3 qu\u00e1 cao so v\u1edbi \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 ch\u1ecdn. N\u1ebfu kh\u00f4ng, h\u00e3y \u0111i\u1ec1u tra c\u1ea3 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc v\u00e0 c\u00e1ch chu\u1ea9n b\u1ecb m\u1eabu.<\/p>\n

C\u00e1c nguy\u00ean nh\u00e2n quang h\u1ecdc g\u00e2y ra l\u1ec7ch Beer-Lambert<\/b><\/strong><\/h2>\n

Kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i c\u00f3 l\u1ed7i \u1edf thi\u1ebft b\u1ecb th\u00ec quy \u0111\u1ecbnh m\u1edbi b\u1ecb coi l\u00e0 kh\u00f4ng tu\u00e2n th\u1ee7. \u0110i\u1ec1u ki\u1ec7n quang h\u1ecdc ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi \u0111\u1ed9 h\u1ea5p th\u1ee5 v\u1eeba ph\u1ea3i c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh h\u1ea1n ch\u1ebf \u1edf \u0111\u1ea7u chu\u1ed7i hi\u1ec7u chu\u1ea9n. Vi\u1ec7c l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ch\u1ea5t l\u01b0\u1ee3ng cao s\u1ebd gi\u1ea3m thi\u1ec3u r\u1ee7i ro \u0111\u00f3, nh\u01b0ng kh\u00f4ng lo\u1ea1i b\u1ecf \u0111\u01b0\u1ee3c nhu c\u1ea7u ki\u1ec3m ch\u1ee9ng ph\u01b0\u01a1ng ph\u00e1p b\u1eb1ng c\u00e1c chu\u1ea9n th\u1ef1c t\u1ebf.<\/p>\n

\u00c1nh s\u00e1ng l\u1ea1c v\u00e0 ph\u1ea1m vi \u0111o quang<\/b><\/strong><\/h3>\n

\u00c1nh s\u00e1ng l\u1ea1c th\u00eam m\u1ed9t th\u00e0nh ph\u1ea7n kh\u00f4ng mong mu\u1ed1n v\u00e0o t\u00edn hi\u1ec7u \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. \u1ede \u0111\u1ed9 h\u1ea5p th\u1ee5 cao, \u00e1nh s\u00e1ng d\u01b0 th\u1eeba \u0111\u00f3 c\u00f3 th\u1ec3 l\u00e0m cho m\u1eabu tr\u00f4ng \u00edt h\u1ea5p th\u1ee5 h\u01a1n so v\u1edbi th\u1ef1c t\u1ebf v\u00e0 l\u00e0m n\u00e9n ph\u1ea7n tr\u00ean c\u1ee7a \u0111\u01b0\u1eddng cong. T9DCS<\/u><\/strong><\/a>\u00a0Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh v\u1edbi \u0111\u1ed9 t\u00e1n x\u1ea1 \u00e1nh s\u00e1ng r\u1ea5t th\u1ea5p, kh\u00f4ng qu\u00e1 0,00004%T \u1edf b\u01b0\u1edbc s\u00f3ng 220 nm v\u00e0 ph\u1ea1m vi \u0111o quang h\u1ecdc \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea l\u00e0 t\u1eeb -8,0 \u0111\u1ebfn 8,0 Abs. Nh\u1eefng th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y h\u1eefu \u00edch khi s\u00e0ng l\u1ecdc c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f2i h\u1ecfi kh\u1eaft khe, nh\u01b0ng ph\u00f2ng th\u00ed nghi\u1ec7m n\u00ean x\u00e1c nh\u1eadn hi\u1ec7u su\u1ea5t \u1edf c\u00e1c b\u01b0\u1edbc s\u00f3ng v\u00e0 m\u1ee9c \u0111\u1ed9 h\u1ea5p th\u1ee5 ri\u00eang c\u1ee7a m\u00ecnh.<\/p>\n

C\u00e1c T10DCS<\/u><\/strong><\/a>\u00a0Thi\u1ebft b\u1ecb n\u00e0y c\u00f3 c\u00f9ng h\u01b0\u1edbng quang h\u1ecdc \u0111\u00e3 \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u00e1nh s\u00e1ng l\u1ea1c, ho\u1ea1t \u0111\u1ed9ng \u1edf ch\u1ebf \u0111\u1ed9 tia c\u1ef1c t\u00edm s\u00e2u (deep-UV) \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch b\u1eb1ng nit\u01a1, b\u0103ng th\u00f4ng c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn li\u00ean t\u1ee5c v\u00e0 k\u00edch th\u01b0\u1edbc ch\u00f9m tia c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh. Nh\u1eefng t\u00ednh n\u0103ng n\u00e0y c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng ph\u1ea1m vi \u0111o th\u1ef1c t\u1ebf. Tuy nhi\u00ean, ch\u00fang kh\u00f4ng bi\u1ebfn m\u1ecdi m\u1eabu \u0111\u1eadm \u0111\u1eb7c th\u00e0nh k\u1ebft qu\u1ea3 \u0111o tr\u1ef1c ti\u1ebfp h\u1ee3p l\u1ec7; vi\u1ec7c pha lo\u00e3ng m\u1eabu v\u00e0 t\u00ednh tuy\u1ebfn t\u00ednh \u0111\u1eb7c tr\u01b0ng c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p v\u1eabn r\u1ea5t quan tr\u1ecdng.<\/p>\n

L\u1ef1a ch\u1ecdn b\u0103ng th\u00f4ng v\u00e0 b\u01b0\u1edbc s\u00f3ng<\/b><\/strong><\/h3>\n

B\u0103ng th\u00f4ng qu\u00e1 r\u1ed9ng c\u00f3 th\u1ec3 l\u00e0m trung b\u00ecnh h\u00f3a m\u1ed9t \u0111\u1eb7c \u0111i\u1ec3m h\u1ea5p th\u1ee5 h\u1eb9p v\u00e0 l\u00e0m thay \u0111\u1ed5i \u0111\u1ec9nh \u0111o \u0111\u01b0\u1ee3c. \u1ede n\u1ed3ng \u0111\u1ed9 cao, vi\u1ec7c \u0111o ch\u00ednh x\u00e1c t\u1ea1i \u0111\u1ec9nh m\u1ea1nh nh\u1ea5t c\u0169ng c\u00f3 th\u1ec3 \u0111\u1ea9y t\u00edn hi\u1ec7u ra ngo\u00e0i v\u00f9ng tuy\u1ebfn t\u00ednh h\u1eefu \u00edch nh\u1ea5t. B\u00e0i vi\u1ebft n\u00e0y m\u00f4 t\u1ea3 vi\u1ec7c ch\u1ecdn b\u01b0\u1edbc s\u00f3ng c\u00f3 \u0111\u1ed9 nh\u1ea1y th\u1ea5p h\u01a1n khi m\u1ed9t h\u1ee3p ch\u1ea5t \u0111\u1eadm \u0111\u1eb7c c\u1ea7n nhi\u1ec1u kho\u1ea3ng tr\u1ed1ng h\u01a1n trong \u0111\u01b0\u1eddng cong hi\u1ec7u chu\u1ea9n v\u00e0 ch\u1ecdn b\u0103ng th\u00f4ng b\u1eb1ng c\u00e1ch ki\u1ec3m tra s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 h\u1ea5p th\u1ee5 khi c\u00e0i \u0111\u1eb7t thay \u0111\u1ed5i. \u0110\u00e2y l\u00e0 c\u00e1c th\u00ed nghi\u1ec7m th\u1ef1c t\u1ebf, kh\u00f4ng ph\u1ea3i l\u00e0 c\u00e1c c\u00e0i \u0111\u1eb7t ph\u1ed5 qu\u00e1t.<\/p>\n

C\u00e1c nguy\u00ean nh\u00e2n h\u00f3a h\u1ecdc v\u00e0 m\u1eabu v\u1eadt d\u1eabn \u0111\u1ebfn t\u00ednh phi tuy\u1ebfn t\u00ednh<\/b><\/strong><\/h2>\n

\"T8DCS<\/p>\n

Quang h\u1ecdc ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a l\u1eddi gi\u1ea3i th\u00edch. M\u1ed1i quan h\u1ec7 Beer-Lambert gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng c\u00e1c ch\u1ea5t h\u1ea5p th\u1ee5 v\u00e0 \u0111i\u1ec1u ki\u1ec7n \u0111o v\u1eabn ph\u00f9 h\u1ee3p khi n\u1ed3ng \u0111\u1ed9 thay \u0111\u1ed5i. C\u00e1c m\u1eabu th\u1ef1c t\u1ebf c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 gi\u1ea3 \u0111\u1ecbnh \u0111\u00f3 tr\u01b0\u1edbc khi \u0111\u1ea7u d\u00f2 \u0111\u1ea1t \u0111\u1ebfn gi\u1edbi h\u1ea1n c\u1ee9ng.<\/p>\n

S\u1ef1 li\u00ean k\u1ebft, tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng v\u00e0 \u0111\u1ed9 pH<\/b><\/strong><\/h3>\n

\u1ede n\u1ed3ng \u0111\u1ed9 cao h\u01a1n, c\u00e1c ph\u00e2n t\u1eed c\u00f3 th\u1ec3 li\u00ean k\u1ebft v\u1edbi nhau, t\u01b0\u01a1ng t\u00e1c v\u1edbi dung m\u00f4i ho\u1eb7c chuy\u1ec3n \u0111\u1ed5i gi\u1eefa c\u00e1c d\u1ea1ng h\u00f3a h\u1ecdc. M\u1ed9t h\u1ee3p ch\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi pH c\u00f3 th\u1ec3 thay \u0111\u1ed5i d\u1ea1ng h\u1ea5p th\u1ee5 c\u1ee7a n\u00f3 khi pha lo\u00e3ng ho\u1eb7c th\u00eam thu\u1ed1c th\u1eed l\u00e0m thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i c\u00e2n b\u1eb1ng. Khi \u0111\u00f3, \u0111\u1ed9 h\u1ea5p th\u1ee5 mol kh\u00f4ng c\u00f2n th\u1ef1c s\u1ef1 kh\u00f4ng \u0111\u1ed5i trong to\u00e0n b\u1ed9 d\u00e3y. Ki\u1ec3m tra qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb dung d\u1ecbch, pH, th\u1eddi gian ph\u1ea3n \u1ee9ng, th\u00e0nh ph\u1ea7n dung m\u00f4i v\u00e0 nhi\u1ec7t \u0111\u1ed9 tr\u01b0\u1edbc khi coi \u0111\u1ed3 th\u1ecb cong l\u00e0 m\u1ed9t l\u1ed7i quang h\u1ecdc.<\/p>\n

\u0110\u1ed9 \u0111\u1ee5c, c\u00e1c h\u1ea1t v\u00e0 hi\u1ec7u \u1ee9ng ma tr\u1eadn<\/b><\/strong><\/h3>\n

C\u00e1c h\u1ea1t l\u01a1 l\u1eedng t\u00e1n x\u1ea1 \u00e1nh s\u00e1ng v\u00e0 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u1ed9 h\u1ea5p th\u1ee5 bi\u1ec3u ki\u1ebfn, trong khi m\u1ed9t ch\u1ea5t n\u1ec1n \u0111\u1eb7c c\u00f3 th\u1ec3 h\u1ea5p th\u1ee5 \u1edf b\u01b0\u1edbc s\u00f3ng \u0111\u00e3 ch\u1ecdn ho\u1eb7c l\u00e0m thay \u0111\u1ed5i ph\u1ea3n \u1ee9ng c\u1ee7a ch\u1ea5t ph\u00e2n t\u00edch. Hi\u1ec7u \u1ee9ng n\u00e0y c\u00f3 th\u1ec3 kh\u00f4ng nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c t\u1ebf b\u00e0o l\u1eb7p l\u1ea1i n\u1ebfu v\u1eadt li\u1ec7u l\u1eafng xu\u1ed1ng ho\u1eb7c h\u00ecnh th\u00e0nh b\u1ecdt kh\u00ed. Ch\u1ec9 so s\u00e1nh dung d\u1ecbch trong su\u1ed1t, \u0111\u00e3 l\u1ecdc ho\u1eb7c \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb \u0111\u00fang c\u00e1ch v\u1edbi m\u1eabu ban \u0111\u1ea7u khi s\u1ef1 thay \u0111\u1ed5i \u0111\u00f3 \u0111\u01b0\u1ee3c ch\u1ea5p nh\u1eadn \u0111\u1ed1i v\u1edbi ph\u01b0\u01a1ng ph\u00e1p. Ghi l\u1ea1i s\u1ef1 thay \u0111\u1ed5i trong qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb v\u00e0 \u0111\u1ed9 thu h\u1ed3i c\u1ee7a m\u1eabu; m\u1ed9t dung d\u1ecbch trong su\u1ed1t h\u01a1n v\u1ec1 m\u1eb7t th\u1ecb gi\u00e1c kh\u00f4ng t\u1ef1 \u0111\u1ed9ng c\u00f3 ngh\u0129a l\u00e0 m\u1ed9t dung d\u1ecbch t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1ec1 m\u1eb7t h\u00f3a h\u1ecdc.<\/p>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c ti\u1ec5n \u0111\u1ec3 kh\u00f4i ph\u1ee5c ph\u1ea1m vi ho\u1ea1t \u0111\u1ed9ng h\u1eefu \u00edch<\/b><\/strong><\/h2>\n

Khi \u0111\u00e3 khoanh v\u00f9ng \u0111\u01b0\u1ee3c nguy\u00ean nh\u00e2n, vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ebd \u0111\u1ee7 \u0111\u01a1n gi\u1ea3n \u0111\u1ec3 c\u00e1c nh\u00e0 ph\u00e2n t\u00edch th\u01b0\u1eddng quy c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n v\u00e0 ghi l\u1ea1i. M\u1ee5c ti\u00eau kh\u00f4ng ph\u1ea3i l\u00e0 \u00e9p bu\u1ed9c m\u1ecdi m\u1eabu ph\u1ea3i n\u1eb1m trong c\u00f9ng m\u1ed9t kho\u1ea3ng h\u1ea5p th\u1ee5. M\u1ee5c ti\u00eau l\u00e0 ch\u1ecdn c\u00e1c \u0111i\u1ec1u ki\u1ec7n mang l\u1ea1i ph\u1ea3n h\u1ed3i h\u1ee3p l\u00fd cho quy\u1ebft \u0111\u1ecbnh \u0111\u00e3 \u0111\u1ecbnh.<\/p>\n

Pha lo\u00e3ng, r\u00fat \u200b\u200bng\u1eafn \u0111\u01b0\u1eddng \u0111i ho\u1eb7c gi\u1ea3m \u0111\u1ed9 nh\u1ea1y<\/b><\/strong><\/h3>\n

Pha lo\u00e3ng th\u01b0\u1eddng l\u00e0 ph\u01b0\u01a1ng ph\u00e1p hi\u1ec7u ch\u1ec9nh ch\u00ednh x\u00e1c nh\u1ea5t khi m\u1eabu v\u1eabn \u1ed5n \u0111\u1ecbnh v\u00e0 b\u01b0\u1edbc chu\u1ea9n b\u1ecb c\u00f3 \u0111\u1ed9 thu h\u1ed3i ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c. \u0110\u01b0\u1eddng d\u1eabn quang ng\u1eafn h\u01a1n c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 h\u1ea5p th\u1ee5, v\u1edbi \u0111i\u1ec1u ki\u1ec7n gi\u00e1 \u0111\u1ee1 v\u00e0 ph\u00e9p t\u00ednh \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ph\u00f9 h\u1ee3p. M\u1ed9t l\u1ef1a ch\u1ecdn kh\u00e1c l\u00e0 s\u1eed d\u1ee5ng b\u01b0\u1edbc s\u00f3ng c\u00f3 \u0111\u1ed9 nh\u1ea1y th\u1ea5p h\u01a1n g\u1ea7n v\u00f9ng h\u1ea5p th\u1ee5. M\u1ed7i thay \u0111\u1ed5i ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh trong thi\u1ebft k\u1ebf hi\u1ec7u chu\u1ea9n v\u00e0 ki\u1ec3m tra t\u00ednh ch\u1ecdn l\u1ecdc, \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a dung d\u1ecbch.<\/p>\n

X\u00e2y d\u1ef1ng l\u1ea1i qu\u00e1 tr\u00ecnh hi\u1ec7u chu\u1ea9n thay v\u00ec c\u1eaft b\u1edbt d\u1eef li\u1ec7u.<\/b><\/strong><\/h3>\n

\u0110\u1eebng ch\u1ec9 \u0111\u01a1n gi\u1ea3n lo\u1ea1i b\u1ecf c\u00e1c ti\u00eau chu\u1ea9n cao nh\u1ea5t ch\u1ec9 v\u00ec ch\u00fang l\u00e0m l\u1ec7ch \u0111\u01b0\u1eddng cong. H\u00e3y x\u00e1c \u0111\u1ecbnh m\u1ed9t ph\u1ea1m vi l\u00e0m vi\u1ec7c d\u1ef1a tr\u00ean b\u1eb1ng ch\u1ee9ng, chu\u1ea9n b\u1ecb c\u00e1c ti\u00eau chu\u1ea9n trong ph\u1ea1m vi \u0111\u00f3 v\u00e0 xem x\u00e9t ph\u1ea7n d\u01b0 thay v\u00ec ch\u1ec9 xem x\u00e9t \u0111\u01b0\u1eddng cong ph\u00f9 h\u1ee3p. N\u1ebfu c\u1ea7n nhi\u1ec1u ph\u1ea1m vi, h\u00e3y ghi r\u00f5 ph\u1ea1m vi n\u00e0o \u00e1p d\u1ee5ng cho t\u1eebng ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n b\u1ecb m\u1eabu. M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p c\u00f3 th\u1ec3 tuy\u1ebfn t\u00ednh sau khi pha lo\u00e3ng v\u00e0 phi tuy\u1ebfn t\u00ednh khi \u0111o tr\u1ef1c ti\u1ebfp; \u0111\u00f3 l\u00e0 c\u00e1c quy tr\u00ecnh kh\u00e1c nhau, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 k\u1ebft qu\u1ea3 m\u00e2u thu\u1eabn.<\/p>\n

Ki\u1ec3m tra k\u1ef9 thi\u1ebft b\u1ecb tr\u01b0\u1edbc khi mua th\u00eam.<\/b><\/strong><\/h2>\n

Quy\u1ebft \u0111\u1ecbnh mua h\u00e0ng c\u1ea7n li\u00ean h\u1ec7 gi\u1eefa \u0111\u1ed9 h\u1ea5p th\u1ee5 v\u00e0 b\u01b0\u1edbc s\u00f3ng d\u1ef1 ki\u1ebfn \u200b\u200bv\u1edbi thi\u1ebft k\u1ebf quang h\u1ecdc, ph\u1ee5 ki\u1ec7n v\u00e0 h\u1ed7 tr\u1ee3 ki\u1ec3m \u0111\u1ecbnh c\u1ee7a thi\u1ebft b\u1ecb. T8DCS<\/u><\/strong><\/a>\u00a0Thi\u1ebft b\u1ecb n\u00e0y cung c\u1ea5p h\u1ec7 th\u1ed1ng quang h\u1ecdc hai ch\u00f9m tia th\u1ef1c s\u1ef1, ph\u00e1t hi\u1ec7n b\u1eb1ng b\u1ed9 khu\u1ebfch \u0111\u1ea1i quang \u0111i\u1ec7n v\u00e0 b\u0103ng th\u00f4ng quang ph\u1ed5 c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn li\u00ean t\u1ee5c t\u1eeb 0,1-5 nm. \u0110\u00e2y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng h\u1ee3p l\u00fd khi ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ea7n c\u00e1c thi\u1ebft l\u1eadp linh ho\u1ea1t cho vi\u1ec7c ph\u00e1t tri\u1ec3n ph\u01b0\u01a1ng ph\u00e1p v\u00e0 c\u00e1c c\u00f4ng vi\u1ec7c \u0111\u1ecbnh l\u01b0\u1ee3ng th\u01b0\u1eddng quy.<\/p>\n

\u0110\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng g\u1ea7n gi\u1edbi h\u1ea1n tr\u00ean c\u1ee7a d\u1ea3i \u0111o quang ho\u1eb7c trong v\u00f9ng c\u1ef1c t\u00edm s\u00e2u, T9DCS ho\u1eb7c T10DCS c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t k\u1ef9 l\u01b0\u1ee1ng h\u01a1n v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt. H\u00e3y x\u00e1c nh\u1eadn hi\u1ec7u su\u1ea5t \u0111\u00e3 c\u00f4ng b\u1ed1 b\u1eb1ng c\u00e1c ti\u00eau chu\u1ea9n ph\u00f9 h\u1ee3p, ki\u1ec3m tra b\u01b0\u1edbc s\u00f3ng v\u00e0 b\u0103ng th\u00f4ng \u0111\u00e3 ch\u1ecdn, v\u00e0 th\u1eed nghi\u1ec7m tr\u00ean ma tr\u1eadn m\u1eabu th\u1ef1c t\u1ebf. B\u1ed9 d\u1ee5ng c\u1ee5 ki\u1ec3m \u0111\u1ecbnh UV-Vis IQ\/OQ\/PQ<\/u><\/strong><\/a>\u00a0N\u00f3 c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 cho cu\u1ed9c th\u1ea3o lu\u1eadn v\u1ec1 ti\u00eau chu\u1ea9n ch\u1ee9ng nh\u1eadn \u0111\u01b0\u1ee3c ghi ch\u00e9p l\u1ea1i, nh\u01b0ng n\u00f3 kh\u00f4ng thay th\u1ebf c\u00e1c nghi\u00ean c\u1ee9u v\u1ec1 t\u00ednh tuy\u1ebfn t\u00ednh c\u1ee7a \u0111\u1ed9 h\u1ea5p th\u1ee5 theo ph\u01b0\u01a1ng ph\u00e1p c\u1ee5 th\u1ec3.<\/p>\n

Do \u0111\u00f3, m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111o quang ph\u1ed5 \u0111\u00e1ng tin c\u1eady coi h\u00e0nh vi Beer-Lambert nh\u01b0 m\u1ed9t \u0111i\u1ec1u c\u1ea7n \u0111\u01b0\u1ee3c ch\u1ee9ng minh. C\u00e2u h\u1ecfi h\u1eefu \u00edch kh\u00f4ng ph\u1ea3i l\u00e0 li\u1ec7u \u0111\u1ecbnh lu\u1eadt n\u00e0y c\u00f3 th\u1ea5t b\u1ea1i tr\u00ean l\u00fd thuy\u1ebft hay kh\u00f4ng. M\u00e0 l\u00e0 ph\u1ea3n \u1ee9ng v\u1eabn tuy\u1ebfn t\u00ednh \u1edf \u0111\u00e2u, t\u1ea1i sao n\u00f3 thay \u0111\u1ed5i b\u00ean ngo\u00e0i ph\u1ea1m vi \u0111\u00f3, v\u00e0 li\u1ec7u thi\u1ebft b\u1ecb v\u00e0 ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n b\u1ecb m\u1eabu \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn c\u00f3 gi\u1eef cho k\u1ebft qu\u1ea3 b\u00e1o c\u00e1o n\u1eb1m trong v\u00f9ng c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 \u0111\u01b0\u1ee3c hay kh\u00f4ng. PERSEE<\/u><\/strong><\/a>\u00a0c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t l\u1ea1i d\u1ef1a tr\u00ean b\u1eb1ng ch\u1ee9ng \u0111\u00f3.<\/p>\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/b><\/strong><\/h2>\n

C\u00e2u 1: N\u1ed3ng \u0111\u1ed9 cao c\u00f3 ph\u1ea3i lu\u00f4n t\u1ea1o n\u00ean m\u1ed9t lo\u1ea1i bia ngon?<\/strong>–<\/strong>\u0110\u1ecbnh lu\u1eadt Lambert th\u1ea5t b\u1ea1i?<\/strong><\/p>\n

A1: Kh\u00f4ng. Ph\u1ea1m vi s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ea5t ph\u00e2n t\u00edch, dung m\u00f4i, b\u01b0\u1edbc s\u00f3ng, chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng truy\u1ec1n, b\u0103ng th\u00f4ng, h\u1ec7 th\u1ed1ng quang h\u1ecdc v\u00e0 ma tr\u1eadn m\u1eabu. N\u1ed3ng \u0111\u1ed9 cao l\u00e0m t\u0103ng nguy c\u01a1 sai l\u1ec7ch, do \u0111\u00f3 c\u1ea7n ph\u1ea3i ch\u1ee9ng minh t\u00ednh tuy\u1ebfn t\u00ednh c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p th\u1ef1c t\u1ebf.<\/p>\n

C\u00e2u 2: Pha lo\u00e3ng c\u00f3 ph\u1ea3i l\u00e0 c\u00e1ch duy nh\u1ea5t \u0111\u1ec3 kh\u1eafc ph\u1ee5c hi\u1ec7n t\u01b0\u1ee3ng phi tuy\u1ebfn t\u00ednh?<\/strong><\/p>\n

A2: Kh\u00f4ng. Chi\u1ec1u d\u00e0i \u0111\u01b0\u1eddng truy\u1ec1n ng\u1eafn h\u01a1n, b\u01b0\u1edbc s\u00f3ng c\u00f3 \u0111\u1ed9 nh\u1ea1y th\u1ea5p h\u01a1n, b\u0103ng th\u00f4ng h\u1eb9p h\u01a1n ho\u1eb7c \u0111\u01b0\u1ee3c bi\u1ec7n minh b\u1eb1ng l\u00fd do kh\u00e1c, qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb m\u1eabu \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n ho\u1eb7c ph\u1ea1m vi hi\u1ec7u chu\u1ea9n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 h\u01a1n c\u00f3 th\u1ec3 h\u1eefu \u00edch. M\u1ed7i thay \u0111\u1ed5i c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng.<\/p>\n

C\u00e2u 3: Nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m n\u00e0o c\u1ee7a thi\u1ebft b\u1ecb quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c m\u1eabu UV-Vis \u0111\u1eadm \u0111\u1eb7c?<\/strong><\/p>\n

A3: Xem x\u00e9t hi\u1ec7u su\u1ea5t \u00e1nh s\u00e1ng t\u00e1n x\u1ea1, ph\u1ea1m vi \u0111o quang, \u0111\u1ed9 ch\u00ednh x\u00e1c b\u01b0\u1edbc s\u00f3ng, ki\u1ec3m so\u00e1t b\u0103ng th\u00f4ng, k\u00edch th\u01b0\u1edbc ch\u00f9m tia, ph\u1ee5 ki\u1ec7n m\u1eabu v\u00e0 h\u1ed7 tr\u1ee3 ch\u1ee9ng nh\u1eadn. C\u00e1c ti\u00eau chu\u1ea9n n\u1ed3ng \u0111\u1ed9 cao ti\u00eau bi\u1ec3u n\u00ean l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 nh\u00e0 cung c\u1ea5p.<\/p>","protected":false},"excerpt":{"rendered":"

The Beer-Lambert law is central to routine spectrophotometry: under suitable conditions, absorbance tracks concentration and optical path length. That relationship is powerful because it turns a light measurement into a quantitative result. It is not unlimited, though. As concentration rises, a calibration curve can bend, residuals can widen, and the reported absorbance can stop representing […]<\/p>\n","protected":false},"author":1,"featured_media":5821,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[38,37],"tags":[],"class_list":["post-5825","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\/5825","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=5825"}],"version-history":[{"count":3,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/5825\/revisions"}],"predecessor-version":[{"id":5830,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/5825\/revisions\/5830"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media\/5821"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media?parent=5825"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/categories?post=5825"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/tags?post=5825"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}