Zobrazeno 1 - 10
of 27
pro vyhledávání: '"K S, Webb"'
Publikováno v:
Metrologia. 36:89-99
A comparison (CCQM-3) of the concentration of the compound (pp'-dichlorodiphenyl) dichloroethylene (pp'-DDE) in 2,2,4-trimethyl pentane solvent by national laboratories using isotope dilution mass spectrometry has been completed. Two levels of sample
Publikováno v:
Accreditation and Quality Assurance. 4:3-13
The UK Valid Analytical Measurement Programme has pump-primed developments in chemical metrology, through a major project on reference methodology and reference materials. This paper provides an overview of developments during 1994–1997 and covers
Publikováno v:
Metrologia. 35:783-785
Publikováno v:
Journal of forensic sciences. 44(2)
The use of isotope dilution mass spectrometry (IDMS) has been investigated for the forensic confirmation of lysergic acid diethylamide (LSD) in urine by LC-MS. The advantages of using a deuterated analog of LSD as an internal standard over methysergi
Autor:
K S, Webb, P B, Baker, N P, Cassells, J M, Francis, D E, Johnston, S L, Lancaster, P S, Minty, G D, Reed, S A, White
Publikováno v:
Journal of forensic sciences. 41(6)
A forensic procedure for the screening and confirmation of the presence of lysergide (lysergic acid diethylamide, LSD) in urine is described together with the evaluation of a novel enzyme immunoassay (EIA) and immunoaffinity extraction procedure. Fol
Publikováno v:
Cancer research. 54(2)
An in vivo study of cisplatin (CDDP) and 5-fluorouracil (5FU) cytotoxicity was performed using a multidose matrix with a human bladder transitional cell carcinoma xenograft tumor line (DU4284) tested by subrenal capsule assay in 154 nude mice (NM-SRC
Autor:
K. S. Webb, A. G. Loudon
Publikováno v:
Organic Mass Spectrometry. 12:283-287
By means of appearance potential measurements and metastable analysis, it is shown that the [C2H6N]+ and [CH4N]+ ions formed from methylated formamides, acetamides, ureas and thioureas rearrange upon formation to structures similar to the [MH]+ ions
Publikováno v:
Organic Mass Spectrometry. 12:279-282
The measurement and interpretation of the ionization potentials of some (methylated) phosphoramides, acetamides and formamides is reported. Additivity rules for the prediction of ionization potentials are examined.
Publikováno v:
British Journal of Cancer. 30:238-240
Mothers of 5-day old rats were given diethylnitrosamine (DEN) (130 mg/kg body weight) by stomach tube. The milk removed from the stomachs of the suckling young contained 5, 16 and 36 parts/106 of DEN at 2, 4 and 6 hours respectively after they starte
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 43:996-998