Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Margaret W. Couch"'
Publikováno v:
Advances in Environmental Research. 4:91-96
Samples (5 g) of an organic soil spiked with a standard volatile organic compound mixture were collected by two methods. One group of samples was weighed upon transfer with a spatula into vials, an aqueous sodium bisulfate solution and a magnetic sti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f1e8bfeed4b9930fc63279de63d1219
https://doi.org/10.1016/s1093-0191(00)00007-1
https://doi.org/10.1016/s1093-0191(00)00007-1
Publikováno v:
AIHAJ. 61:214-222
The components of carbonless copy paper (CCP) and the chemistry involved in its manufacture are reviewed. Claims that the routine use of CCP can cause health problems ranging from skin, eye, and lung irritation to severe headaches and neurological da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::851691bf1900050abc643f3f9872464d
https://doi.org/10.1202/0002-8894(2000)061<0214:ccparo>2.0.co
https://doi.org/10.1202/0002-8894(2000)061<0214:ccparo>2.0.co
Publikováno v:
Biochemical Medicine. 28:305-309
The urine of three out of four patients with neuroblastoma was found to have a 14-fold elevation of m -hydroxyphenylglycol and a 6-fold elevation of m -hydroxymandelic acid. This was attributed to an increased formation of m -octopamine and m -syneph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99e713dda5c1d008dd2dd346670f4961
https://doi.org/10.1016/0006-2944(82)90084-9
https://doi.org/10.1016/0006-2944(82)90084-9
Publikováno v:
Biological Mass Spectrometry. 4:381-384
It has been shown that there is no significant carrier effect when low levels of [3H]octopamine (100 pg) are extracted by ethyl acetate from aqueous solutions containing a 10(3) or 10(6) times excess of unlabelled octopamine. It is also shown that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d8afccd5f8387176475109eb01895fe
https://doi.org/10.1002/bms.1200040611
https://doi.org/10.1002/bms.1200040611
Publikováno v:
Clinica Chimica Acta. 158:109-114
The urinary concentrations of o-hydroxymandelic acid, m-hydroxymandelic acid, p-hydroxymandelic acid, homovanillic acid and vanillylmandelic acid were determined in 57 healthy children and 9 patients with neuroblastoma. The concentrations of o-hydrox
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::748040d52f5c18cc10709e1ae9f10e7d
https://doi.org/10.1016/0009-8981(86)90121-x
https://doi.org/10.1016/0009-8981(86)90121-x
Publikováno v:
Steroids. 28:295-303
A method for the synthesis and purification of 6β-iodo-methyl-19-norcholest-5(10)-ene-3β-ol- 131 I of >98 mole% chemical purity and >99% radiochemical purity is presented. Carbon-13 and proton NMR were used to establish the identity and purity. Dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bc265556fd9f34c132aae88586f1bf5
https://doi.org/10.1016/0039-128x(76)90117-3
https://doi.org/10.1016/0039-128x(76)90117-3
Autor:
Clyde M. Williams, Margaret W. Couch
Publikováno v:
Organic Mass Spectrometry. 6:21-32
The mass spectra of benzylamine, N-ethylbenzylamine, N,N-dimethylbenzylamine, p-methoxybenzylamine and 4-hydroxy-3-methoxybenzylamine, and their acetamide and trimethyl- silyl (TMS) derivatives have been recorded. Low and high resolution spectroscopy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f64ca48c733575da1bcee570c79b456
https://doi.org/10.1002/oms.1210060104
https://doi.org/10.1002/oms.1210060104
Publikováno v:
Biochemical Medicine. 8:362-370
A gas chromatographic method for the qualitative and quantitative determination of urinary and plasma saccharin as its N-methyl derivative has been described. The structure of this derivative was proved by mass spectrometry and by proton and 13C NMR.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5054709b7ee68de1ceee58749abb0ad
https://doi.org/10.1016/0006-2944(73)90041-0
https://doi.org/10.1016/0006-2944(73)90041-0
Publikováno v:
Biochemical Medicine. 6:294-298
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52dfdddb63e9bc0cde62e8e37815ccf6
https://doi.org/10.1016/0006-2944(72)90051-8
https://doi.org/10.1016/0006-2944(72)90051-8
Publikováno v:
Biological Mass Spectrometry. 1:40-42
β-(m-Hydroxyphenyl)hydracrylic acid has been identified in human urine by gas chromatography, high and low reso ution mass spectrometry, and proton nuclear magnetic resonance spectroscopy. A rapid and conclusive method is presented for the identific
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c579d038b978e788bcbe8d76e831f963
https://doi.org/10.1002/bms.1200010109
https://doi.org/10.1002/bms.1200010109