Výsledky vyhledávání

A simple and sensitive assay using GC-MS for determination of chlorfluazuron in termites

Autor: Che Nin Man, Ching-Chen Lee, Chow-Yang Lee, Razak Lajis, Norjuliana Mohd Noor

Publikováno v: Journal of Pesticide Science. 38:208-213

Chlorfluazuron (CFZ) is a benzoylphenylurea insecticide that is commonly used in baits for management of subterranean termites. In this study, a new method using GC-MS for the determination and quantification of CFZ in termites was developed and vali

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c064dbc85eaacfd431abafaa2d7374a4
https://doi.org/10.1584/jpestics.d13-036

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Simultaneous determination of isoniazid and pyrazinamide in plasma by high performance liquid chromatography

Autor: Syed Azhar Syed Sulaiman, Irfhan Ali Hyder Ali, Amer Hayat Khan, Razak Lajis, Che N. Man, Abdallah Abdallah Mahjoub

Publikováno v: Tropical Journal of Pharmaceutical Research; Vol 15, No 11 (2016); 2475-2481

Purpose: To develop and validate a new high performance liquid chromatographic (HPLC) method for the simultaneous determination of isoniazid (INH) and pyrazinamide (PZA) in plasma. Methods: A 150 μL aliquot of plasma was mixed with 75 μL of 10 % tr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e178846e33421504b21e3f050f50e07
https://www.ajol.info/index.php/tjpr/article/view/149198

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Identification of thioketone analogues of sildenfil using gas chromatography–mass spectrometry

Autor: Che Nin Man, Norjuliana Mohd Noor, Razak Lajis

Publikováno v: Journal of Chromatography A. 1218:7055-7060

Sildenafil analogues have been found adulterated in herbal preparations and food products that claim to have natural aphrodisiacs. In this study, a gas chromatography-mass spectrometry (GC-MS) assay was developed for the screening and identification

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51010560bb07a86a6bfe564c47667726
https://doi.org/10.1016/j.chroma.2011.08.037

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Correlation between urinary nicotine, cotinine and self-reported smoking status among educated young adults

Autor: Ahmad Shalihin Mohd Samin, Razak Lajis, Ahmed Ibrahim Fathelrahman, Gam Lay Harn, Che Nin Man, Rahmat Awang, Nurulain Abdullah Bayanuddin, Maizurah Omar

Publikováno v: Environmental Toxicology and Pharmacology. 28:92-96

The objective of this study was to correlate, differentiate and validate the self-reported smoking status of educated young adults with urinary biomarkers (i.e. nicotine and cotinine). Freshmen students were recruited on voluntary basis. They filled-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc02335c7c8a50e4697dce6f6282e0e6
https://doi.org/10.1016/j.etap.2009.03.003

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Determination of hair nicotine by gas chromatography–mass spectrometry

Autor: Syazwani Ismail, Gam Lay Harn, Razak Lajis, Che Nin Man, Rahmat Awang

Publikováno v: Journal of Chromatography B. 877:339-342

Hair nicotine is a known biomarker for monitoring long-term environmental tobacco smoke (ETS) exposure and smoking status. In general, hair nicotine assay involves alkaline digestion, extraction and instrumental analysis. The gas chromatography-mass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95b0122b376a64a9a609eb9574b91907
https://doi.org/10.1016/j.jchromb.2008.12.014

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Simple, rapid and sensitive assay method for simultaneous quantification of urinary nicotine and cotinine using gas chromatography–mass spectrometry

Autor: Rahmat Awang, Che Nin Man, Razak Lajis, Syazwani Ismail, Lay-Harn Gam

Publikováno v: Journal of Chromatography B. 844:322-327

Nicotine is a major addictive compound in cigarette. Its smoke is rapidly and extensively metabolized to several metabolites in human. Cotinine as a major metabolite of nicotine is commonly used as a biomarker to determine active and passive smokers.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35e0520dbbe82c0a6a98051629caab2b
https://doi.org/10.1016/j.jchromb.2006.07.029

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Screening of tetrodotoxin in puffers using gas chromatography-mass spectrometry

Autor: Norjuliana Mohd Noor, Gam Lay Harn, Samsur Mohamad, Razak Lajis, Che Nin Man

Publikováno v: Journal of chromatography. A. 1217(47)

Tetrodotoxin (TTX), a toxic compound found in some puffers can cause death to humans through consumption. We have developed a simplified method for the screening of TTX in puffers using GC–MS. A puffer tissue of 0.5 g was treated with 5 mL of 0.1%

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c6a230fb90c01d3929f550f9ed1b16b3
https://pubmed.ncbi.nlm.nih.gov/20950812

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Identification of sildenafil, tadalafil and vardenafil by gas chromatography-mass spectrometry on short capillary column

Autor: Noorjuliana Md Nor, Razak Lajis, Che Nin Man, Gam Lay Harn

Publikováno v: Journal of chromatography. A. 1216(47)

Sildenafil and its analogues (tadalafil and vardenafil) are phosphodiesterase type 5 inhibitors used in the treatment of male erectile dysfunction. Some dietary supplements, herbal preparations and food products which claim to enhance male sexual fun

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c156098d9f3896dab05d0d00be5060f
https://pubmed.ncbi.nlm.nih.gov/19853256

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