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Measurement of pyrethroid, organophosphorus, and carbamate insecticides in human plasma using isotope dilution gas chromatography-high resolution mass spectrometry.
Pérez JJ, Williams MK, Weerasekera G, Smith K, Whyatt RM, Needham LL, Barr DB. Pérez JJ, et al. Among authors: needham ll. J Chromatogr B Analyt Technol Biomed Life Sci. 2010 Oct 1;878(27):2554-62. doi: 10.1016/j.jchromb.2010.03.015. Epub 2010 Apr 3. J Chromatogr B Analyt Technol Biomed Life Sci. 2010. PMID: 20434413 Free PMC article.
Improved quantitative detection of 11 urinary phthalate metabolites in humans using liquid chromatography-atmospheric pressure chemical ionization tandem mass spectrometry.
Silva MJ, Malek NA, Hodge CC, Reidy JA, Kato K, Barr DB, Needham LL, Brock JW. Silva MJ, et al. Among authors: needham ll. J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Jun 15;789(2):393-404. doi: 10.1016/s1570-0232(03)00164-8. J Chromatogr B Analyt Technol Biomed Life Sci. 2003. PMID: 12742130
New high-resolution mass spectrometric approach for the measurement of polychlorinated biphenyls and organochlorine pesticides in human serum.
Barr JR, Maggio VL, Barr DB, Turner WE, Sjödin A, Sandau CD, Pirkle JL, Needham LL, Patterson DG Jr. Barr JR, et al. Among authors: needham ll. J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Aug 25;794(1):137-48. doi: 10.1016/s1570-0232(03)00451-3. J Chromatogr B Analyt Technol Biomed Life Sci. 2003. PMID: 12888206
Measurement of dialkyl phosphate metabolites of organophosphorus pesticides in human urine using lyophilization with gas chromatography-tandem mass spectrometry and isotope dilution quantification.
Bravo R, Caltabiano LM, Weerasekera G, Whitehead RD, Fernandez C, Needham LL, Bradman A, Barr DB. Bravo R, et al. Among authors: needham ll. J Expo Anal Environ Epidemiol. 2004 May;14(3):249-59. doi: 10.1038/sj.jea.7500322. J Expo Anal Environ Epidemiol. 2004. PMID: 15141154
Quantification of phenolic metabolites of environmental chemicals in human urine using gas chromatography-tandem mass spectrometry and isotope dilution quantification.
Bravo R, Caltabiano LM, Fernandez C, Smith KD, Gallegos M, Whitehead RD Jr, Weerasekera G, Restrepo P, Bishop AM, Perez JJ, Needham LL, Barr DB. Bravo R, et al. Among authors: needham ll. J Chromatogr B Analyt Technol Biomed Life Sci. 2005 Jun 25;820(2):229-36. doi: 10.1016/j.jchromb.2005.03.012. Epub 2005 Apr 26. J Chromatogr B Analyt Technol Biomed Life Sci. 2005. PMID: 15899376
Quantification of six herbicide metabolites in human urine.
Norrgran J, Bravo R, Bishop AM, Restrepo P, Whitehead RD, Needham LL, Barr DB. Norrgran J, et al. Among authors: needham ll. J Chromatogr B Analyt Technol Biomed Life Sci. 2006 Jan 18;830(2):185-95. doi: 10.1016/j.jchromb.2005.10.041. Epub 2005 Nov 16. J Chromatogr B Analyt Technol Biomed Life Sci. 2006. PMID: 16297668
386 results