|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM235306460 |
| 003 |
DE-627 |
| 005 |
20231224103126.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231224s2014 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1021/la4050094
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n0784.xml
|
| 035 |
|
|
|a (DE-627)NLM235306460
|
| 035 |
|
|
|a (NLM)24512499
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Zielińska, Katarzyna
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Partitioning of humic acids between aqueous solution and hydrogel
|b concentration profiling of humic acids in hydrogel phases
|
| 264 |
|
1 |
|c 2014
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Completed 20.10.2014
|
| 500 |
|
|
|a Date Revised 05.03.2014
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a The partitioning of the natural polyelectrolyte humic acid (HA) from an aqueous dispersion into a model biomimetic gel (alginate) and a synthetic polyacrylamide gel (PAAm) is explored. In both gels, the spatial distribution of HA in the gel body, as measured by confocal laser scanning microscopy, is markedly nonhomogeneous. A striking feature is the enhanced accumulation of HA in a thin film of thickness ca. 15 μm at the surface of the gel body, resulting in average local concentrations that are, for PAAm and alginate respectively, a factor of 10 and 4 greater than that in the bulk solution. The time dependence of accumulation in the surface film is predominantly controlled by the diffusive supply of HA from the aqueous medium, with a time constant on the order of 10(3) s for both gels. The concentration of HA within the bulk gel body differs significantly from that in the bulk aqueous medium: substantially higher for PAAm but much lower for alginate. The results are significant for understanding the nature and rate of sink/source functioning at permeable phases in contact with aqueous media, e.g., biofilms and gel-like layers at biological interfaces or employed in chemical speciation sensors
|
| 650 |
|
4 |
|a Journal Article
|
| 700 |
1 |
|
|a Town, Raewyn M
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Yasadi, Kamuran
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a van Leeuwen, Herman P
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 30(2014), 8 vom: 04. März, Seite 2084-92
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
|
| 773 |
1 |
8 |
|g volume:30
|g year:2014
|g number:8
|g day:04
|g month:03
|g pages:2084-92
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1021/la4050094
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_22
|
| 912 |
|
|
|a GBV_ILN_350
|
| 912 |
|
|
|a GBV_ILN_721
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 30
|j 2014
|e 8
|b 04
|c 03
|h 2084-92
|