{"id":3867,"date":"2025-08-28T11:50:55","date_gmt":"2025-08-28T03:50:55","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3867"},"modified":"2025-08-28T10:50:41","modified_gmt":"2025-08-28T02:50:41","slug":"ensuring-accuracy-and-speed-why-gc-ms-leads-in-real-time-gas-analysis","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/vi\/applications\/ensuring-accuracy-and-speed-why-gc-ms-leads-in-real-time-gas-analysis","title":{"rendered":"\u0110\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u1ed1c \u0111\u1ed9: T\u1ea1i sao GC-MS d\u1eabn \u0111\u1ea7u trong ph\u00e2n t\u00edch kh\u00ed th\u1eddi gian th\u1ef1c"},"content":{"rendered":"

\"1nh\u00e0\"1nh\u00e0<\/p>\n

H\u00f4m nay’ th\u1ebf gi\u1edbi c\u00f4ng nghi\u1ec7p di chuy\u1ec3n nhanh ch\u00f3ng, c\u00f3 th\u1ec3 xem c\u00e1c quy tr\u00ecnh h\u00f3a h\u1ecdc khi ch\u00fang x\u1ea3y ra l\u00e0’ t ch\u1ec9 l\u00e0 m\u1ed9t nice-to-have; n\u00f3’ S l\u00e0 m\u1ed9t must. Ph\u00e2n t\u00edch kh\u00ed th\u1eddi gian th\u1ef1c gi\u00fap c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p gi\u1eef cho s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd t\u1ed1t, an to\u00e0n v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc m\u00f4i tr\u01b0\u1eddng. Trong s\u1ed1 t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau c\u00f3 s\u1eb5n, quang ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec5m s\u1eafc kh\u00ed (GC-MS) \u0111\u00e3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u. \u0110i\u1ec1u n\u00e0y l\u00e0 b\u1edfi v\u00ec n\u00f3 c\u1ef1c k\u1ef3 nh\u1ea1y c\u1ea3m, ch\u00ednh x\u00e1c v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho nhi\u1ec1u th\u1ee9 kh\u00e1c nhau.<\/p>\n

Vai tr\u00f2 c\u1ee7a ph\u00e2n t\u00edch kh\u00ed th\u1eddi gian th\u1ef1c trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i<\/b><\/strong><\/h2>\n

Ph\u00e2n t\u00edch kh\u00ed th\u1eddi gian th\u1ef1c \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o c\u00f4ng vi\u1ec7c ch\u1ea1y tr\u01a1n tru v\u00e0 s\u1ea3n ph\u1ea9m c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao.<\/p>\n

T\u1ea7m quan tr\u1ecdng c\u1ee7a On-the-spot Measurements<\/b><\/strong>
\nVi\u1ec7c ph\u00e1t hi\u1ec7n nh\u1eefng thay \u0111\u1ed5i trong trang \u0111i\u1ec3m kh\u00ed ngay l\u1eadp t\u1ee9c cho ph\u00e9p c\u00f4ng nh\u00e2n th\u1ef1c hi\u1ec7n s\u1eeda ch\u1eefa nhanh ch\u00f3ng. \u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00e1nh nh\u1eefng sai l\u1ea7m \u0111\u1eaft ti\u1ec1n ho\u1eb7c t\u00ecnh hu\u1ed1ng nguy hi\u1ec3m. \u0110i\u1ec1u g\u00ec’ H\u01a1n n\u1eefa, k\u1ef9 n\u0103ng n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u1edf nh\u1eefng n\u01a1i m\u00e0 ngay c\u1ea3 nh\u1eefng thay \u0111\u1ed5i nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1 l\u1edbn.<\/p>\n

C\u00e1c \u1ee9ng d\u1ee5ng tr\u00ean kh\u1eafp c\u00e1c l\u0129nh v\u1ef1c c\u00f4ng nghi\u1ec7p<\/b><\/strong>
\nNhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau, nh\u01b0 h\u00f3a d\u1ea7u, d\u01b0\u1ee3c ph\u1ea9m, gi\u00e1m s\u00e1t m\u00f4i tr\u01b0\u1eddng v\u00e0 s\u1ea3n xu\u1ea5t th\u1ef1c ph\u1ea9m, d\u1ef1a v\u00e0o ph\u00e2n t\u00edch kh\u00ed trong th\u1eddi gian th\u1ef1c. V\u00ed d\u1ee5, c\u00e1c nh\u00e0 m\u00e1y h\u00f3a d\u1ea7u s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 ki\u1ec3m tra d\u00f2ng ch\u1ea3y hydrocarbon. \u0110\u1ed3ng th\u1eddi, c\u00e1c c\u00f4ng ty d\u01b0\u1ee3c ph\u1ea9m s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng trong khi s\u1ea3n xu\u1ea5t s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd.<\/p>\n

Th\u00e1ch th\u1ee9c trong c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch kh\u00ed truy\u1ec1n th\u1ed1ng<\/b><\/strong><\/h3>\n

Ph\u01b0\u01a1ng ph\u00e1p tr\u01b0\u1eddng c\u0169 c\u00f3 nh\u1eefng v\u1ea5n \u0111\u1ec1 c\u1ee7a n\u00f3. H\u1ecd th\u01b0\u1eddng y\u00eau c\u1ea7u l\u1ea5y m\u1eabu v\u00e0 g\u1eedi n\u00f3 \u0111\u1ebfn ph\u00f2ng th\u00ed nghi\u1ec7m \u1edf n\u01a1i kh\u00e1c. Qu\u00e1 tr\u00ecnh n\u00e0y g\u00e2y ra s\u1ef1 ch\u1eadm tr\u1ec5. N\u00f3 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 l\u00e0m h\u1ecfng m\u1eabu. B\u00ean c\u1ea1nh \u0111\u00f3, c\u00e1c m\u00e1y d\u00f2 c\u0169 n\u00e0y \u0111\u00f4i khi’ t nh\u1ea1y c\u1ea3m ho\u1eb7c \u0111\u1ee7 c\u1ee5 th\u1ec3 \u0111\u1ec3 x\u1eed l\u00fd h\u1ed7n h\u1ee3p kh\u00ed ph\u1ee9c t\u1ea1p.<\/p>\n

C\u00e1ch GC-MS k\u1ebft h\u1ee3p \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3<\/b><\/strong><\/h2>\n

GC-MS \u0111\u1eb7c bi\u1ec7t v\u00ec n\u00f3 pha tr\u1ed9n s\u1ee9c t\u00e1ch v\u1edbi nh\u1eadn d\u1ea1ng ph\u00e2n t\u1eed. H\u1ed7n h\u1ee3p n\u00e0y l\u00e0m cho n\u00f3 ho\u00e0n h\u1ea3o cho c\u00f4ng vi\u1ec7c th\u1eddi gian th\u1ef1c.<\/p>\n

C\u00e1c nguy\u00ean t\u1eafc c\u01a1 b\u1ea3n c\u1ee7a Gas Chromatography-Mass Spectrometry<\/b><\/strong>
\nH\u00e3y ngh\u0129 v\u1ec1 n\u00f3 nh\u01b0 m\u1ed9t nh\u00f3m g\u1ed3m hai ph\u1ea7n: M\u00e1y s\u1eafc t\u1ed1 kh\u00ed (GC) v\u00e0 M\u00e1y quang ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng (MS). Tr\u01b0\u1edbc h\u1ebft, GC l\u1ea5y m\u1ed9t h\u1ed7n h\u1ee3p ph\u1ee9c t\u1ea1p v\u00e0 t\u00e1ch n\u00f3 th\u00e0nh c\u00e1c b\u1ed9 ph\u1eadn ri\u00eang l\u1ebb. Sau \u0111\u00f3, khi m\u1ed7i ph\u1ea7n r\u1eddi kh\u1ecfi GC, n\u00f3 \u0111i v\u00e0o MS. MS cung c\u1ea5p cho n\u00f3 m\u1ed9t s\u1ea1c \u0111i\u1ec7n v\u00e0 t\u00ednh ra n\u00f3 d\u1ef1a tr\u00ean t\u1ef7 l\u1ec7 kh\u1ed1i l\u01b0\u1ee3ng-s\u1ea1c c\u1ee7a n\u00f3.<\/p>\n

Kh\u1ea3 n\u0103ng t\u00e1ch v\u00e0 x\u00e1c \u0111\u1ecbnh<\/b><\/strong>
\nKh\u1ea3 n\u0103ng h\u00e0nh \u0111\u1ed9ng k\u00e9p n\u00e0y cho ph\u00e9p GC-MS bi\u1ebft s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c ch\u1ea5t c\u00f3 v\u1ebb t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng c\u00f3 c\u1ea5u tr\u00fac ph\u00e2n t\u1eed kh\u00e1c nhau.<\/p>\n

L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c k\u1ebft h\u1ee3p quang ph\u1ed5 v\u1edbi quang ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng<\/b><\/strong>
\nL\u00e0m vi\u1ec7c nh\u00f3m gi\u1eefa GC v\u00e0 MS d\u1eabn \u0111\u1ebfn s\u1ef1 t\u00e1ch bi\u1ec7t tuy\u1ec7t v\u1eddi v\u00e0 x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c. Vi\u1ec7c k\u1ebft n\u1ed1i m\u1ea1nh m\u1ebd n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u00edt b\u00e1o \u0111\u1ed9ng sai h\u01a1n v\u00e0 cho ph\u00e9p m\u1ecdi ng\u01b0\u1eddi tin t\u01b0\u1edfng h\u01a1n v\u00e0o k\u1ebft qu\u1ea3.<\/p>\n

L\u1ee3i th\u1ebf ch\u00ednh c\u1ee7a GC-MS trong gi\u00e1m s\u00e1t quy tr\u00ecnh th\u1eddi gian th\u1ef1c<\/b><\/strong><\/h2>\n

M\u1ed9t s\u1ed1 \u0111i\u1ec1u l\u00e0m cho GC-MS ph\u00f9 h\u1ee3p tuy\u1ec7t v\u1eddi cho vi\u1ec7c xem c\u00e1c quy tr\u00ecnh khi ch\u00fang x\u1ea3y ra.<\/p>\n

\u0110\u1ed9 nh\u1ea1y c\u1ea3m cao \u0111\u1ec3 ph\u00e1t hi\u1ec7n m\u1ee9c d\u1ea5u v\u1ebft<\/b><\/strong>
\nGC-MS c\u00f3 th\u1ec3 t\u00ecm th\u1ea5y c\u00e1c ch\u1ea5t \u1edf m\u1ee9c ph\u1ea7n tr\u00ean t\u1ef7 (ppb), v\u00e0 \u0111\u00f4i khi th\u1eadm ch\u00ed th\u1ea5p h\u01a1n. \u0110i\u1ec1u n\u00e0y l\u00e0m cho n\u00f3 m\u1ed9t s\u1ef1 gi\u00fap \u0111\u1ee1 r\u1ea5t l\u1edbn khi t\u00ecm ki\u1ebfm kh\u00ed \u0111\u1ed9c h\u1ea1i ho\u1eb7c t\u1ea1p ch\u1ea5t nh\u1ecf c\u00f3 th\u1ec3 g\u00e2y r\u1ed1i lo\u1ea1n v\u1edbi ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m ho\u1eb7c ph\u00e1 v\u1ee1 c\u00e1c quy \u0111\u1ecbnh.<\/p>\n

K\u1ebft qu\u1ea3 \u0111\u1ecbnh l\u01b0\u1ee3ng nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady<\/b><\/strong>
\nB\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u1eef li\u1ec7u t\u1eeb c\u00e1c \u0111\u1ec9nh nhi\u1ec5m s\u1eafc, GC-MS c\u00f3 th\u1ec3 cung c\u1ea5p th\u00f4ng tin \u0111\u1ecbnh l\u01b0\u1ee3ng ch\u00ednh x\u00e1c ch\u1ec9 trong v\u00e0i ph\u00fat. \u0110i\u1ec1u n\u00e0y ho\u00e0n h\u1ea3o cho c\u00e1c n\u01a1i c\u00f4ng nghi\u1ec7p b\u1eadn r\u1ed9n.<\/p>\n

Y\u00eau c\u1ea7u chu\u1ea9n b\u1ecb m\u1eabu t\u1ed1i thi\u1ec3u<\/b><\/strong>
\nGC-MS r\u1ea5t linh ho\u1ea1t. N\u00f3 c\u00f3 th\u1ec3 ki\u1ec3m tra kh\u00ed, ch\u1ea5t l\u1ecfng v\u00e0 ch\u1ea5t r\u1eafn v\u1edbi s\u1ef1 gi\u00fap \u0111\u1ee1 c\u1ee7a c\u00e1c thi\u1ebft b\u1ecb b\u1ed5 sung kh\u00e1c nhau. C\u00e1c c\u00f4ng c\u1ee5 nh\u01b0 m\u00e1y l\u1ea5y m\u1eabu headspace ho\u1eb7c pyrolyzers cho ph\u00e9p c\u00e1c h\u00f3a ch\u1ea5t d\u1ec5 bay h\u01a1i \u0111\u01b0\u1ee3c \u0111\u01b0a tr\u1ef1c ti\u1ebfp v\u00e0o h\u1ec7 th\u1ed1ng m\u00e0 kh\u00f4ng c\u1ea7n nhi\u1ec1u c\u00f4ng vi\u1ec7c chu\u1ea9n b\u1ecb.<\/p>\n

T\u0103ng c\u01b0\u1eddng ki\u1ec3m so\u00e1t quy tr\u00ecnh v\u1edbi c\u00f4ng ngh\u1ec7 GC-MS<\/b><\/strong><\/h2>\n

\u0110\u1eb7t GC-MS v\u00e0o quy tr\u00ecnh l\u00e0m vi\u1ec7c h\u00e0ng ng\u00e0y mang l\u1ea1i l\u1ee3i \u00edch th\u1ef1c s\u1ef1, c\u00f3 th\u1ec3 \u0111o l\u01b0\u1eddng \u0111\u01b0\u1ee3c trong c\u00e1ch m\u1ecdi th\u1ee9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t.<\/p>\n

Ph\u00e1t hi\u1ec7n s\u1ef1 l\u1ec7ch h\u01b0\u1edbng quy tr\u00ecnh ngay l\u1eadp t\u1ee9c<\/b><\/strong>
\nD\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp t\u1eeb c\u00e1c h\u1ec7 th\u1ed1ng GC-MS cho ph\u00e9p ph\u00e1t hi\u1ec7n ngay l\u1eadp t\u1ee9c b\u1ea5t k\u1ef3 s\u1ef1 tr\u00f4i d\u1ea1t n\u00e0o t\u1eeb c\u00e1c \u0111i\u1ec1u ki\u1ec7n quy tr\u00ecnh l\u00fd t\u01b0\u1edfng. H\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o nhanh n\u00e0y cho ph\u00e9p h\u00e0nh \u0111\u1ed9ng tr\u01b0\u1edbc khi v\u1ea5n \u0111\u1ec1 tr\u1edf n\u00ean l\u1edbn h\u01a1n.<\/p>\n

H\u1ed7 tr\u1ee3 t\u1ef1 \u0111\u1ed9ng h\u00f3a v\u00e0 gi\u00e1m s\u00e1t li\u00ean t\u1ee5c<\/b><\/strong>
\nC\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng c\u00e1c li\u00ean k\u1ebft truy\u1ec1n th\u00f4ng k\u1ef9 thu\u1eadt s\u1ed1 nh\u01b0 RS-232 ho\u1eb7c TCP \/ IP. Ch\u00fang cho ph\u00e9p ch\u00fang k\u1ebft n\u1ed1i tr\u01a1n tru v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh (DCS), m\u1edf c\u1eeda cho t\u1ef1 \u0111\u1ed9ng h\u00f3a.<\/p>\n

Gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 chi ph\u00ed v\u1eadn h\u00e0nh<\/b><\/strong>
\nGC-MS gi\u00fap gi\u1ea3m c\u00e1c v\u1ee5 \u0111\u00f3ng c\u1eeda b\u1ea5t ng\u1edd v\u00e0 chi ph\u00ed c\u1ee7a ch\u00fang. L\u00e0m th\u1ebf n\u00e0o? B\u1eb1ng c\u00e1ch t\u00ecm ra c\u00e1c v\u1ea5n \u0111\u1ec1 nh\u01b0 \u00f4 nhi\u1ec5m ho\u1eb7c l\u1ed7i thi\u1ebft b\u1ecb s\u1edbm. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p s\u1eeda ch\u1eefa ch\u1ee7 \u0111\u1ed9ng.<\/p>\n

C\u00e1c t\u00ednh n\u0103ng k\u1ef9 thu\u1eadt l\u00e0m cho GC-MS l\u00fd t\u01b0\u1edfng cho vi\u1ec7c s\u1eed d\u1ee5ng th\u1eddi gian th\u1ef1c<\/b><\/strong><\/h2>\n

C\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi \u0111\u00e3 l\u00e0m cho c\u00e1c h\u1ec7 th\u1ed1ng GC-MS nhanh h\u01a1n v\u00e0 ch\u00ednh x\u00e1c h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 s\u1eed d\u1ee5ng t\u1ea1i ch\u1ed7.<\/p>\n

K\u1ef9 thu\u1eadt t\u00e1ch m\u00e0u s\u1eafc nhanh<\/b><\/strong>
\nT\u00e1ch c\u00e1c m\u1eabu nhanh ch\u00f3ng l\u00e0 r\u1ea5t quan tr\u1ecdng cho ph\u00e2n t\u00edch li\u00ean t\u1ee5c trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n

L\u1eadp tr\u00ecnh nhi\u1ec7t \u0111\u1ed9 v\u00e0 thi\u1ebft k\u1ebf c\u1ed9t<\/b><\/strong>
\nGC hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng l\u1eadp tr\u00ecnh nhi\u1ec7t \u0111\u1ed9. M\u1eb9o n\u00e0y gi\u00fap t\u0103ng t\u1ed1c s\u1ef1 t\u00e1ch bi\u1ec7t m\u00e0 kh\u00f4ng m\u1ea5t chi ti\u1ebft. C\u00e1c l\u1edbp ph\u1ee7 \u0111\u1eb7c bi\u1ec7t b\u00ean trong c\u00e1c c\u1ed9t m\u1ea1ch m\u00e1u m\u1ecfng c\u0169ng l\u00e0m cho ch\u00fang t\u1ed1t h\u01a1n trong vi\u1ec7c ch\u1ecdn ra c\u00e1c lo\u1ea1i h\u00f3a ch\u1ea5t kh\u00e1c nhau.<\/p>\n

T\u00f9y ch\u1ecdn nhi\u1ec5m s\u1eafc \u0111a chi\u1ec1u<\/b><\/strong>
\n\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ed7n h\u1ee3p th\u1ef1c s\u1ef1 ph\u1ee9c t\u1ea1p, nh\u01b0 kh\u00f3i t\u1eeb d\u1ea7u th\u00f4 ho\u1eb7c \u00f4 nhi\u1ec5m, th\u1eadm ch\u00ed c\u00f2n c\u00f3 h\u1ec7 th\u1ed1ng GC hai chi\u1ec1u. Ch\u00fang cung c\u1ea5p \u0111\u1ed9 ph\u00e2n gi\u1ea3i t\u1ed1t h\u01a1n nhi\u1ec1u v\u00ec ch\u00fang t\u00e1ch h\u00f3a ch\u1ea5t qua hai giai \u0111o\u1ea1n kh\u00e1c nhau.<\/p>\n

H\u1ec7 th\u1ed1ng ph\u00e1t hi\u1ec7n quang ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng ti\u00ean ti\u1ebfn<\/b><\/strong>
\nC\u00e1c m\u00e1y quang ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n r\u1ea5t nhi\u1ec1u. H\u1ecd b\u00e2y gi\u1edd c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u1ea3 t\u00ecm ki\u1ebfm c\u00e1c m\u1ee5c ti\u00eau c\u1ee5 th\u1ec3 v\u00e0 th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch r\u1ed9ng r\u00e3i.<\/p>\n

Gi\u00e1m s\u00e1t ion ch\u1ecdn l\u1ecdc (SIM) cho ph\u00e2n t\u00edch nh\u1eafm m\u1ee5c ti\u00eau<\/b><\/strong>
\nSIM mode l\u00e0 m\u1ed9t v\u00ed d\u1ee5 t\u1ed1t. N\u00f3 t\u0103ng gi\u1edbi h\u1ea1n ph\u00e1t hi\u1ec7n b\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c ion c\u1ee5 th\u1ec3 t\u1eeb c\u00e1c h\u1ee3p ch\u1ea5t \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn. \u0110i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng khi b\u1ea1n’ re \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u \u0111\u1ec3 theo d\u00f5i c\u00e1c ch\u1ea5t ki\u1ec3m so\u00e1t nh\u01b0 VOC ho\u1eb7c dung m\u00f4i c\u00f2n l\u1ea1i.<\/p>\n

Ch\u1ebf \u0111\u1ed9 qu\u00e9t \u0111\u1ea7y \u0111\u1ee7 cho h\u1ed3 s\u01a1 to\u00e0n di\u1ec7n<\/b><\/strong>
\nTrong ch\u1ebf \u0111\u1ed9 qu\u00e9t \u0111\u1ea7y \u0111\u1ee7, h\u1ec7 th\u1ed1ng ghi l\u1ea1i t\u1ea5t c\u1ea3 c\u00e1c m\u1ea3nh \u0111\u01b0\u1ee3c s\u1ea1c trong m\u1ed9t ph\u1ea1m vi kh\u1ed1i l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh. T\u1eeb d\u1eef li\u1ec7u n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ed9t ph\u1ed5 kh\u1ed1i l\u01b0\u1ee3ng, \u0111\u00f3 l\u00e0 bi\u1ec3u \u0111\u1ed3 c\u01b0\u1eddng \u0111\u1ed9 ion so v\u1edbi m \/ z \u1edf m\u1ed9t kho\u1ea3nh kh\u1eafc duy nh\u1ea5t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap t\u00ecm ra c\u00e1c h\u1ee3p ch\u1ea5t ch\u01b0a bi\u1ebft b\u1eb1ng c\u00e1ch so s\u00e1nh ch\u00fang v\u1edbi c\u00e1c th\u01b0 vi\u1ec7n ho\u1eb7c b\u1eb1ng c\u00e1ch nh\u1eadn \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng r\u1ea5t ch\u00ednh x\u00e1c v\u1edbi c\u00f4ng ngh\u1ec7 TOFMS.<\/p>\n

So s\u00e1nh GC-MS v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt ph\u00e2n t\u00edch kh\u00e1c<\/b><\/strong><\/h2>\n

N\u00f3’ l\u00e0 h\u1eefu \u00edch \u0111\u1ec3 xem c\u00e1ch GC-MS x\u1ebfp nhau so v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 kh\u00e1c. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y t\u1ea1i sao n\u00f3’ Ng\u01b0\u1eddi chi\u1ebfn th\u1eafng trong nh\u1eefng t\u00ecnh hu\u1ed1ng kh\u00f3 kh\u0103n.<\/p>\n

GC-MS so v\u1edbi quang ph\u1ed5 h\u1ed3ng ngo\u1ea1i (IR)<\/b><\/strong>
\nPh\u1ed5 quang h\u1ed3ng l\u00e0 h\u1eefu \u00edch b\u1edfi v\u00ec n\u00f3 kh\u00f4ng’ t ph\u00e1 h\u1ee7y m\u1eabu, nh\u01b0ng n\u00f3 th\u01b0\u1eddng’ t \u0111\u1ee7 c\u1ee5 th\u1ec3 cho h\u1ed7n h\u1ee3p ph\u1ee9c t\u1ea1p. Ng\u01b0\u1ee3c l\u1ea1i, GC-MS cung c\u1ea5p cho b\u1ea1n c\u00e1c chi ti\u1ebft c\u1ea5p \u0111\u1ed9 ph\u00e2n t\u1eed b\u1ea1n c\u1ea7n \u0111\u1ec3 ch\u1eafc ch\u1eafn v\u1ec1 nh\u1eefng g\u00ec b\u1ea1n’ \u0111\u00e3 t\u00ecm th\u1ea5y.<\/p>\n

GC-MS vs. M\u00e1y d\u00f2 d\u1eabn nhi\u1ec7t (TCD)<\/b><\/strong>
\nTCDs r\u1ea5t kh\u00f3 kh\u0103n, nh\u01b0ng ch\u00fang kh\u00f4ng nh\u1ea1y c\u1ea3m nh\u01b0 m\u00e1y d\u00f2 MS. H\u1ecd l\u00e0 t\u1ed1t cho vi\u1ec7c ph\u00e2n t\u00edch m\u1ecdi th\u1ee9 trong s\u1ed1 l\u01b0\u1ee3ng l\u1edbn, nh\u01b0ng h\u1ecd c\u00f3 th\u1ec3’ t ph\u00e1t hi\u1ec7n \u0111\u00e1ng tin c\u1eady c\u00e1c th\u00e0nh ph\u1ea7n d\u1ea5u v\u1ebft nh\u1ecf nh\u01b0 GC-MS c\u00f3 th\u1ec3.<\/p>\n

GC-MS vs. Ph\u00e1t hi\u1ec7n ion h\u00f3a ng\u1ecdn l\u1eeda (FID)<\/b><\/strong>
\nFID l\u00e0 tuy\u1ec7t v\u1eddi \u0111\u1ec3 \u0111\u1ebfm hydrocarbon, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3’ t cho b\u1ea1n bi\u1ebft ch\u00fang l\u00e0 g\u00ec v\u1ec1 c\u1ea5u tr\u00fac. C\u1ea3 GC-MS v\u00e0 GC-FID \u0111\u1ec1u s\u1eed d\u1ee5ng m\u1ed9t c\u1ed9t \u0111\u1ec3 t\u00e1ch m\u1ecdi th\u1ee9 tr\u01b0\u1edbc. S\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn l\u00e0 m\u00e1y d\u00f2. M\u00e1y d\u00f2 MS cung c\u1ea5p d\u1ea5u v\u00e2n tay d\u1ef1a tr\u00ean c\u00e1ch m\u1ed9t ph\u00e2n t\u1eed b\u1ecb t\u00e1ch ra. \u0110i\u1ec1u n\u00e0y cho GC-MS m\u1ed9t l\u1ee3i th\u1ebf r\u00f5 r\u00e0ng so v\u1edbi FID khi b\u1ea1n c\u1ea7n bi\u1ebft ch\u00ednh x\u00e1c m\u1ed9t ch\u1ea5t l\u00e0 g\u00ec.<\/p>\n

Gi\u1edbi thi\u1ec7u PERSEE: M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u00e1ng tin c\u1eady c\u1ee7a c\u00e1c d\u1ee5ng c\u1ee5 ph\u00e2n t\u00edch<\/b><\/strong><\/h2>\n

Khi ch\u1ecdn m\u1ed9t \u0111\u1ed1i t\u00e1c cho c\u00e1c d\u1ee5ng c\u1ee5, b\u1ea1n mu\u1ed1n m\u1ed9t ng\u01b0\u1eddi \u0111\u00e1ng tin c\u1eady v\u00e0 s\u00e1ng t\u1ea1o. PERSEE<\/u><\/a>\u00a0l\u00e0 c\u1ea3 hai.<\/p>\n

T\u1ed5ng quan v\u1ec1 kh\u1ea3 n\u0103ng c\u00f4ng ngh\u1ec7 c\u1ee7a PERSEE<\/b><\/strong>
\nPersee l\u00e0 m\u1ed9t chuy\u00ean gia trong c\u00f4ng c\u1ee5 khoa h\u1ecdc ti\u00ean ti\u1ebfn<\/u><\/a>\u00a0\u0110\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho nhu c\u1ea7u c\u00f4ng nghi\u1ec7p kh\u00f3 kh\u0103n. H\u1ecd l\u00e0m m\u1ecdi th\u1ee9 t\u1eeb m\u00e1y quang ph\u1ed5 \u0111\u1ebfn h\u1ec7 th\u1ed1ng nhi\u1ec5m s\u1eafc c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u0129nh v\u1ef1c ho\u1eb7c trong ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n

H\u1ec7 th\u1ed1ng G5 GC \u0111\u1ec3 ph\u00e2n t\u00edch kh\u00ed ch\u00ednh x\u00e1c<\/b><\/strong><\/p>\n

\"\"
\nC\u00e1c D\u00f2ng G5<\/u><\/a>\u00a0l\u00e0 m\u1ed9t v\u00ed d\u1ee5 tuy\u1ec7t v\u1eddi v\u1ec1 s\u1ef1 c\u1ed1ng hi\u1ebfn c\u1ee7a PERSEE \u0111\u1ed1i v\u1edbi k\u1ef9 thu\u1eadt ch\u1ea5t l\u01b0\u1ee3ng:<\/p>\n

Thi\u1ebft k\u1ebf m\u00f4-\u0111un v\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n th\u00f4ng minh: Thi\u1ebft k\u1ebf c\u1ee7a n\u00f3 l\u00e0 m\u00f4-\u0111un. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng thi\u1ebft l\u1eadp m\u00e1y d\u00f2 d\u1ef1a tr\u00ean nh\u1eefng g\u00ec h\u1ecd c\u1ea7n. \u0110\u1ed3ng th\u1eddi, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n th\u00f4ng minh t\u1ef1 x\u1eed l\u00fd nhi\u1ec7t \u0111\u1ed9 v\u00e0 t\u1ef7 l\u1ec7 d\u00f2ng ch\u1ea3y.<\/p>\n