Chemical ionization mass spectrometry electron capture

McClure, TD and Liebler, DC, 1995. Electron capture negative chemical ionization mass spectrometry and tandem mass-spectrometry analysis of beta-carotene, alpha-tocopherol and their oxidation products. J Mass Spectrom 30, 1480-1488. [Pg.347]

Qin BH, Yu BB, Zhang Y, Lin XC. Residual analysis of organochlorine pesticides in soil by gas chromatograph-electron capture detector (gc-ecd) and gas chromatograph-negative chemical ionization mass spectrometry (GC-NCI-MS). Environ. Forensics 2009 10 331-335. [Pg.334]

Yu and Bayne [58] differentiated different aroclors in soil using linear discrimination and analyses by electron capture negative ion chemical ionization mass spectrometry. [Pg.174]

Imazethapyr herbicide has been determined at the pg kg-1 level in soil by microwave assisted extraction using electron capture negative chemical ionization mass spectrometry [176], A soil extract is prepared by extraction with 0.1M ammonium acetate at pHIO or 1M ammonium acetate at pH9.5. [Pg.256]

Microwave-assisted extraction coupled with gas chromatography-electron capture negative chemical ionization mass spectrometry (i. e., MAE-GC-EC-NCI-MS) was described for the simplified determination of imidazolinone herbicides in soil at the ppb level [715]. [Pg.88]

Kim Y-S, Zhang H, Kim H-Y. 2000. Profiling neurosteroids in cerebrospinal fluids and plasma by gas chromatography/ electron capture negative chemical ionization mass spectrometry. Anal Biochem 277 187. [Pg.14]

ECD = electron capture detector FID = flame ionization detector GC = gas chromatography HRGC = high resolution gas chromatography LC-APCI-MS = liquid chromatography-atmospheric pressure chemical ionization-mass spectrometry LSE = liquid-solid extraction MS = mass spectrometry PVC = polyvinyl chloride SFE = supercritical fluid extraction... [Pg.235]

Shaw LM, Edling-Owens J, Mattes R (1991) Ultrasensitive measurement of delta-9-tetra-hydrocannabinol with a high energy dynode detector and electron-capture negative chemical-ionization mass spectrometry. Clin Chem 37 2062-2068... [Pg.689]

IA Blair. Electron capture negative ion chemical ionization mass spectrometry of lipid mediators. In RC Murphy, FA Fitzpatrick, eds. Methods in Enzymology. San Diego, CA Academic Press, 1990, p. 13. [Pg.189]

Perfluoroacyl derivatives such as trifluoroacetyl (TF.A), pentafluoropropionyl (PFP) and heptafluorobutyryl (HFB) are very commonly employed in GC-MS. Much of their popularity arose from their ease of preparation and their useful employment in GC with ECD. Workers then employed them directly in the GC-MS system and in many cases excellent results were obtained—high mass increments which can be conveniently adjusted by choice of derivative (see Table 3) and high abundance fragment ions. All this is in addition to their advantages for negative-ion chemical ionization mass spectrometry, where their electron capturing properties can enable highly sensitive analyses to be carried out. [Pg.313]

Lee SH, Blair lA. Targeted chiral lipidomics analysis by liquid chromatography electron capture atmospheric pressure chemical ionization mass spectrometry (LC-ECAPCI/ MS). Methods Enzymol 2007 433 159-174. [Pg.677]

Rouzer CA, Chaudhary AK, Nokubo M, Ferguson DM, Reddy GR, Blair lA, Marnett LJ. Analysis of the malondialdehyde-2 -deoxyguanosine adduct pyrimidopurinone in human leukocyte DNA by gas chromatography/electron capture/negative chemical ionization/mass spectrometry. Chem Res Toxicol 1997 10 181-188. [Pg.681]

Higashi, T. Takido, N. Yamauchi, A. Shimada, K. Electron-capturing derivatization of neutral steroids for increasing sensitivity in liquid chromatography/negative atmospheric pressure chemical ionization-mass spectrometry. Anal. Sci. 2002,18 (12), 1301-1307. [Pg.230]

Determination of Flurazepam in Human Plasma by Gas Chromatography-Electron Capture Negative Chemical Ionization Mass Spectrometry Anal. Chem. 53(6) 793-797 (1981) ... [Pg.296]