Zobrazeno 1 - 10
of 238
pro vyhledávání: '"K. H. Lieser"'
Autor:
E. W. Beck, K. H. Lieser
Publikováno v:
Angewandte Makromolekulare Chemie. 227:101-110
A new cellulose exchanger was synthesized from “o-aminophenolcellulose” by diazotation and coupling with diaminodibenzo-17-crown-5. The distribution coefficients for Ca2+, Sr2+, Ba2+, Na+ and K+ were determined in water/methanol mixtures as a fun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6da93f4bb07aaba5db96c638685b228b
https://doi.org/10.1002/apmc.1995.052270110
https://doi.org/10.1002/apmc.1995.052270110
Autor:
W. Fey, K. H. Lieser
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 351:129-133
The isotope ratios 207Pb:206Pb and 208Pb: 206Pb are measured by means of inductively coupled plasma mass spectrometry (ICP-MS) for monazite minerals and commercial rare earth compounds and are evaluated with respect to the initial composition of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::818a3b85a7c566446639f159c4ef84a7
https://doi.org/10.1007/bf00324302
https://doi.org/10.1007/bf00324302
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 350:135-138
The problems encountered in the determination of trace elements in small sample volumes of the order of 1 to 10 μl (e.g. in droplets of water) are discussed. Total reflexion X-ray fluorescence (TXRF) and neutron activation analysis (NAA) are applied
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d4c68a2ca07f15c266c1b7664969c74
https://doi.org/10.1007/bf00323175
https://doi.org/10.1007/bf00323175
Autor:
H.‐J. Fischer, K. H. Lieser
Publikováno v:
Angewandte Makromolekulare Chemie. 208:133-150
Syntheses of cellulose exchangers carrying tailor-made chelating anchor groups are described. One type of anchor groups offers three coplanar carboxy groups for the complexation of UO2+2, a second type coplanar amidoxime-hydroxamic acid groups and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89fea900ed1b5fcd1b3a09392f2cfc7c
https://doi.org/10.1002/apmc.1993.052080113
https://doi.org/10.1002/apmc.1993.052080113
Autor:
K. H. Lieser, H. J. Fischer
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 346:934-942
Several tailor-made cellulose exchangers are investigated with respect to their properties (capacities, distribution coefficients for UO22+, Fe3+, Ni2+, Cu2+, Pb2+ as function of pH, and half-time of exchange). The chelating anchor groups are: 8-oxa-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79c384f409fa7dfb8f8cb2777782236d
https://doi.org/10.1007/bf00322754
https://doi.org/10.1007/bf00322754
Autor:
K. H. Lieser, A. Ament
Publikováno v:
ract. 60:27-32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ff7c37a5333ff10b08406f5ae46fefa
https://doi.org/10.1524/ract.1993.60.1.27
https://doi.org/10.1524/ract.1993.60.1.27
Autor:
A. Ament, K. H. Lieser
Publikováno v:
ract. 60:21-24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::616664126287a0924da000d95ec20d65
https://doi.org/10.1524/ract.1993.60.1.21
https://doi.org/10.1524/ract.1993.60.1.21
Autor:
K. H. Lieser, W. Fey
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 346:896-904
The determination of impurities in the concentration range down to about 0.1 mg/kg in rare earth compounds without chemical separation or preconcentration has been investigated by application of various multielement methods suitable for routine analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68b4e009df1a559ace839c113a8af2aa
https://doi.org/10.1007/bf00322747
https://doi.org/10.1007/bf00322747
Autor:
K. H. Lieser, R. Hill
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 342:337-340
Methods for the determination of Th in the range of low concentrations are compiled and discussed. Application of spectrophotometry and voltammetry is investigated. Spectrophotometry is applicable down to concentrations of the order of 0.1 μg/l as l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51fe1be3e3340784c4ae75f15a627bfc
https://doi.org/10.1007/bf00322181
https://doi.org/10.1007/bf00322181
Autor:
K. H. Lieser, R. Hill
Publikováno v:
ract. 56:141-152
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::231e568821a329f5bbb513df2730b6f0
https://doi.org/10.1524/ract.1992.56.3.141
https://doi.org/10.1524/ract.1992.56.3.141