Tyrefors NL - Search Results

1

Acidic transformation of nordiazepam can affect recovery estimate during trace analysis of diazepam and nordiazepam in environmental water samples by liquid chromatography-tandem mass spectrometry.

Barclay VKH, Tyrefors NL, Johansson IM, Pettersson CE. Barclay VKH, et al. Among authors: tyrefors nl. Anal Bioanal Chem. 2019 Jul;411(17):3919-3928. doi: 10.1007/s00216-019-01870-7. Epub 2019 May 18. Anal Bioanal Chem. 2019. PMID: 31104085 Free PMC article.

2

Trace analysis of fluoxetine and its metabolite norfluoxetine. Part I: development of a chiral liquid chromatography-tandem mass spectrometry method for wastewater samples.

Barclay VK, Tyrefors NL, Johansson IM, Pettersson CE. Barclay VK, et al. Among authors: tyrefors nl. J Chromatogr A. 2011 Aug 19;1218(33):5587-96. doi: 10.1016/j.chroma.2011.06.024. Epub 2011 Jun 17. J Chromatogr A. 2011. PMID: 21752386

3

Trace analysis of fluoxetine and its metabolite norfluoxetine. Part II: Enantioselective quantification and studies of matrix effects in raw and treated wastewater by solid phase extraction and liquid chromatography-tandem mass spectrometry.

Barclay VK, Tyrefors NL, Johansson IM, Pettersson CE. Barclay VK, et al. Among authors: tyrefors nl. J Chromatogr A. 2012 Mar 2;1227:105-14. doi: 10.1016/j.chroma.2011.12.084. Epub 2012 Jan 5. J Chromatogr A. 2012. PMID: 22265784

4

Chiral analysis of metoprolol and two of its metabolites, α-hydroxymetoprolol and deaminated metoprolol, in wastewater using liquid chromatography-tandem mass spectrometry.

Barclay VK, Tyrefors NL, Johansson IM, Pettersson CE. Barclay VK, et al. Among authors: tyrefors nl. J Chromatogr A. 2012 Dec 21;1269:208-17. doi: 10.1016/j.chroma.2012.09.090. Epub 2012 Oct 1. J Chromatogr A. 2012. PMID: 23089516

5

Determination of flumazenil in human plasma by liquid chromatography-electrospray ionisation tandem mass spectrometry.

Lavén M, Appel L, Moulder R, Tyrefors N, Markides K, Långström B. Lavén M, et al. J Chromatogr B Analyt Technol Biomed Life Sci. 2004 Sep 5;808(2):221-7. doi: 10.1016/j.jchromb.2004.05.009. J Chromatogr B Analyt Technol Biomed Life Sci. 2004. PMID: 15261815

6

Temperature control of liquid chromatographic columns and enzyme reactors by using a proportional-integral-differential regulator in conjunction with a thermoelectric element.

Tyrefors N. Tyrefors N. Anal Chem. 1991 Sep 1;63(17):1901-2. doi: 10.1021/ac00017a043. Anal Chem. 1991. PMID: 1789446 No abstract available.

7

Determination of raclopride in human plasma by on-column focusing packed capillary liquid chromatography-electrospray ionisation mass spectrometry.

Forngren BH, Tyrefors N, Markides KE, Långström B. Forngren BH, et al. J Chromatogr B Biomed Sci Appl. 2000 Oct 1;748(1):189-95. doi: 10.1016/s0378-4347(00)00398-4. J Chromatogr B Biomed Sci Appl. 2000. PMID: 11092598

8

Two new types of assays to determine protein concentrations in biological fluids using mass spectrometry of intact proteins with cystatin C in spinal fluid as an example.

Tyrefors N, Michelsen P, Grubb A. Tyrefors N, et al. Scand J Clin Lab Invest. 2014 Sep;74(6):546-54. doi: 10.3109/00365513.2014.917697. Epub 2014 Jul 10. Scand J Clin Lab Invest. 2014. PMID: 25010448 Free PMC article.

9

Determination of morphine, morphine-3-glucuronide and morphine-6-glucuronide in human serum by solid-phase extraction and liquid chromatography-mass spectrometry with electrospray ionisation.

Tyrefors N, Hyllbrant B, Ekman L, Johansson M, Långström B. Tyrefors N, et al. J Chromatogr A. 1996 Apr 5;729(1-2):279-85. doi: 10.1016/0021-9673(95)01090-4. J Chromatogr A. 1996. PMID: 9004950

10

Reversed-phase ion-pair chromatography coupled to electrospray ionisation mass spectrometry by on-line removal of the counter-ions.

Forngren BH, Samskog J, Gustavsson SA, Tyrefors N, Markides KE, Långström B. Forngren BH, et al. J Chromatogr A. 1999 Aug 27;854(1-2):155-62. doi: 10.1016/s0021-9673(99)00526-9. J Chromatogr A. 1999. PMID: 10497936

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