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1

Toxic effect of non-ionic phosphoorganic surfactants on selected organisms representing aquatic biocenosis

100%

Karpinska-Smulikowska J., Moskal J.

Acta Toxicologica

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2004

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tom 12

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nr 1

2

Interaction of polyelectrolyte gels and surface active agents

100%

Zielinska E., Maslinska-Solich J., Lekawska E.

Polish Journal of Environmental Studies

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1999

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tom 08

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nr 5

Hydrogel polymers can absorb surface active agents from the water environment, which can be practically applied for their removal from waters polluted with detergents. The carried out investigation studies involved the interaction of maleic anhydride copolymers with vinyl ethers when subjected to crosslinking with various crosslinking agents, as well as generated in Poland cationic, anionic and non-ionic surfactants. A very high absorption of cationic surfactant by the hydrogels has been found, which can be applied in the vicinity of plants using such surfactants, e.g. dairies. Poly(vinyl) alcohol crosslinked with glutaraldehyde, was used as hydrogel too, and it doesn't absorb cationic surfactants.

3

Surface activity of simple sulfobetaines

88%

Kwasniewska D., Wieczorek D., Staszak K.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2015

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nr 3

4

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Bifunctional surfactants - their potential application as pesticides

88%

Sarapuk J.

International Agrophysics

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2000

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tom 14

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nr 3

5

Surfactants and dispersed systems in theory and practice SURUZ 2005. Polanica Zdroj, 31 maja - 4 czerwca 2005

88%

Zielinski R.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2005

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nr 4

6

Surfactants in the River Warta: 1990-2000

88%

Szymanski A., Wyrwas B., Jesiolowska A., Kazmierczak S., Przybysz T., Grodecka J., Lukaszewski Z.

Polish Journal of Environmental Studies

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2001

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tom 10

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nr 5

Data concerning the systematic determination of anionic surfactants (AS) and non-ionic surfactants (NS) over the period 1990-2000 in a single sampling point (Poznan) is reported, as well as data concerning the determination of these surfactants along the whole of the River Warta measured in 1997-1999. The indirect tensammetric method was applied for the determination of non-ionic surfactants, while the MBAS method was applied for the determination of anionic surfactants. The: average concentration of NS over the period 1990-2000 showed a highly increasing tendency, from approximately 25 mug l(-1) to approximately 150 mug l(-1). The average spring-summer concentration of AS over this period fluctuated around the value of 140 mug l(-1), while autumn-winter average concentrations showed a gradual decrease in average concentration over the last five years, from approximately 300 mug l(-1) to approximately 150 mug l(-1).

7

Wetting properties of new sulfobetaines

75%

Wieczorek D., Staszak K.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

|

2012

|

nr 4

8

Computation of the partition coefficient of anionic and amphotheric surfactants between n-octanol and water

75%

Zielinski R.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

|

2017

|

nr 2

9

Application of topological matrices in prediction of selected physicochemical properties of aqueous surfactant solution

75%

Zielinski R.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2015

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nr 3

10

Foaming properties of selected surfactants

75%

Wieczorek D., Michocka K.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2015

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nr 1

11

Application of topological indices in estimating of the CMC value of surfactants in aqueous solutions

75%

Zielinski R.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

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2015

|

nr 2

12

Irritation activity and cosmetic products - surface active agents

75%

Lelen K., Arct J., Majewski S., Modrzyk D., Proczek J.

Towaroznawcze Problemy Jakości. Polskie Towarzystwo Towaroznawcze

|

2007

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nr 4

13

The effectiveness of surfactants adsorption onto chitin and dye-modified chitin

75%

Klimiuk E., Gusiatin Z., Kabardo K.

Polish Journal of Environmental Studies

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2006

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tom 15

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nr 1

Adsorption of anionic (Borutosol KRN, Siarczanol N-2) and nonionic (Rokafenol N-8) surfactants onto chitin and dye-modified chitin (Brillantorange 3R, Scarlet R and Black DN) was investigated. Experiments were carried out at pH 3.0 and pH 6.2. The Langmuir-Freundlich model was used to describe adsorption isotherms. It was proved that adsorption isotherms of SAAs* onto chitin were S-type. The adsorption was the most effective for anionic SAAs. It was stated that adsorption of SAAs onto dye-modified chitin depended on dye type, bound previously onto chitin and on pH adjustment. At pH 3.0, for vinyl dye-modified chitin (Brillantorange 3R, Scarlet R) the highest adsorption capacities at plateau region were stated for Borutosol KRN (320 and 330 mg/g d.w., respectively) and Siarczanol N-2 (290 and 310 mg/g d.w.). However, for Black DN-modified chitin, the mass of adsorbed anionic surfactants was distinctly lower – 120 mg/g d.w. for Borutosol KRN and 13 mg/g d.w. for Siarczanol N-2. The pH increase from 3.0 to 6.2 caused a drop in amount of SAAs adsorbed at plateau region. Dye solubilization was demonstrated for dye-modified chitin. The amount of dissolved dyes in solution depended on pH adjustment as well as SAA type. At pH 3.0, for anionic SAAs dye solubilization increased clearly with the increase of SAA concentrations. Nonionic Rokafenol N-8 almost did not cause dye solubilization. At pH 6.2 dye solubilization was nearly independent of SAA concentration.

14

Biodegradability of detergent powder surfactants in the river water die-away test

75%

Siwinski P., Szymanski A., Lukaszewski Z.

Polish Journal of Environmental Studies

|

1998

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tom 07

|

nr 4

A modified river water die-away test is developed for controlling the biodegradability of anionic surfactants (AS) and non-ionic surfactants (NS) of detergent powders. The tested powder undergoes a procedure replicating the washing process. An aliquot of the final solution is introduced into river water exhibiting good biodegradative ability. Primary biodegradation of both types of surfactant is monitored over 20 days and the MBAS method used for determining AS and the indirect tensammetric method for NS. Twelve detergent powders purchased in Polish supermarkets in 1995 are analysed. AS in all tested powders exhibit a relatively fast and complete biodegradation. NS are very diverse in terms of biodegradability: two powders had NS not satisfying the 80% biodegradability limit.

15

Inhibiting effect of surfactants and heavy metal ions on the denitrification process

75%

Seifert K., Domka F.

Polish Journal of Environmental Studies

|

2005

|

tom 14

|

nr 1

The effect of selected surfactants and heavy metal ions on the kinetics of the process of denitrification taking place with the involvement of Bacillus licheniformis bacteria has been studied. The limiting concentrations of the compounds studied and the coefficients of inhibition have been determined. A kinetic model of denitrification was carried out in a lactate medium with the addition of a quaternary ammonium salt APDA has been proposed. The process has been shown to occur according to the autocatalytic model of the second order with respect to nitrates (V) and proteins and first order with respect to nitrates (III) for the subseguent irreversible reaction.

16

The entrance of surface active material to pulmonary capillaries in the lungs of newborn rats

75%

Biczysko W., Wasowicz M., Marszalek A., Florek E.

Folia Histochemica et Cytobiologica

|

1995

|

tom 33

|

nr 1

17

The adsorption of reactive dyes from mixtures containing surfactants onto chitin

75%

Klimiuk E., Kabardo K., Gusiatin Z., Filipkowska U.

Polish Journal of Environmental Studies

|

2005

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tom 14

|

nr 6

Adsorption of reactive dyes and surfactants onto chitin from mixtures containing surfactants at constant concentration and dyes at variable concentration was investigated in the present study. Two vinylsulfonate dyes (Scarlet R, Brillantorange 3R); chlorotriazine dye (Black DN); anionic (Borutosol KRN, Siarczanol N-2) and non-ionic (Rokafenol N-8) surfactants were tested. The experiments were carried out without and with pH adjustment. The research have proved that at pH 6.2 and in surfactants presence the adsorption of vinyl-sulfonate dyes onto chitin was lower than without surfactants (control sample). It was observed that the maximum adsorption capacity of chitin in mixtures of Scarlet R and surfactants was about 3-fold lower than without surfactants and in mixtures of Brillantorange 3R and surfactants was from 2.5 to 4.1-fold lower than in control sample. At pH 3.0 the differences between maximum adsorption capacity of chitin for dyes from aqueous solutions and containing surfactants ranged from 2% (in mixture of Brillantorange 3R and Borutosol KRN) to 23% (in mixture of Scarlet R and Siarczanol N-2). The maximum adsorption capacity of chitin for Black DN (chlorotriazyne dye) in surfactants presence (from 140 to 290 mg/dm3 ) was higher at pH 6.2 as well as at pH 3.0 in comparison to control sample. Rokafenol N-8 was adsorbed the weakest onto chitin from among tested surfactants. At pH 3.0 for vinyl-sulfonate dyes the relationships between mass proportion of dye and surfactant adsorbed onto chitin (Qdye/QSAA* ) and initial concentration proportion of dye and surfactant in solution (Cdye/CSAA) was nearly linear. This indicates that dyes competed with surfactants of active sites of chitin. SAA* – Surface Active Agent (s)

18

On stability of circular hole in membrane bilayer

75%

Fosnaric M., Kralj-Iglic V., Hagerstrand H., Iglic A.

Cellular and Molecular Biology Letters

|

2001

|

tom 06

|

nr 2

19

Gemini ester quat surfactants and their biological activity

63%

Luczynski J., Frackowiak R., Wloch A., Kleszczynska H., Witek S.

Cellular and Molecular Biology Letters

|

2013

|

tom 18

|

nr 1

Cationic gemini surfactants are an important class of surface-active compounds that exhibit much higher surface activity than their monomeric counterparts. This type of compound architecture lends itself to the compound being easily adsorbed at interfaces and interacting with the cellular membranes of microorganisms. Conventional cationic surfactants have high chemical stability but poor chemical and biological degradability. One of the main approaches to the design of readily biodegradable and environmentally friendly surfactants involves inserting a bond with limited stability into the surfactant molecule to give a cleavable surfactant. The best-known example of such a compound is the family of ester quats, which are cationic surfactants with a labile ester bond inserted into the molecule. As part of this study, a series of gemini ester quat surfactants were synthesized and assayed for their biological activity. Their hemolytic activity and changes in the fluidity and packing order of the lipid polar heads were used as the measures of their biological activity. A clear correlation between the hemolytic activity of the tested compounds and their alkyl chain length was established. It was found that the compounds with a long hydrocarbon chain showed higher activity. Moreover, the compounds with greater spacing between their alkyl chains were more active. This proves that they incorporate more easily into the lipid bilayer of the erythrocyte membrane and affect its properties to a greater extent. A better understanding of the process of cell lysis by surfactants and of their biological activity may assist in developing surfactants with enhanced selectivity and in widening their range of application.

20

Fine structure of the surfactant system in amphibian lungs

63%

Walski M.

Folia Histochemica et Cytobiologica

|

1984

|

tom 22

|

nr 2

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