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The main aim of this study was to find out to what extent the concentration of cationic n-dodecylamine nitrate DAN and/or anionic sodium n-dodecyl sulphate SDS surfactants influence the ratio between hexagonal H and cubic C type of negative colloid AgI particles prepared by dilution of AgI complex in NaI solution by pouring into DAN and/or SDS solutions of different concentrations. Using x-ray diffraction...
In order to confirm the models of mutual interactions in three- or four-component surfactant systems the experimental determinations of the electrophoretic mobility u+0− (cm2 s−1 V−1) as a function of the molal ratios n/y, k/h, and x/y were carried out. The polycomponent models are (nRhod+ + yCl2−SO4−)0− + (xBlue+ + yCl2−SO4−)+0− and (kCl2−NH3+ + hFluo−)0 +...
Investigations were carried out with the intention to establish conditions at which it is possible to prepare two cationic + anionic surfactant systems with the predetermined characteristics. For this purpose, the first colloid system examined was n-dodecylamine nitrate with sodium n-dodecylsulfate, and as the second one negative silver iodide sol with n-dodecylamine nitrate. Each system was prepared...
The influence of the surface active substances of the cationic (n-dodecyl amine sulphate S+) + anionic type (sodium n-dodecyl sulphate S−) on the characteristics of the negative silver iodide sols was investigated. Surfactants were present at the moment of silver iodide formation, and act markedly at very low concentrations. In order to obtain new data about interaction between S+ + S− and AgI-I−,...
It is well known that by using the same surfactant and the same inorganic sol particles essentially different colloid phenomena can be observed. If the identical surfactant is present under different conditions, added in various concentrations or mixed at various conditions, i.e., depending on the preparation conditions, the resulting colloids exhibit specific properties. In order to obtain highly...
Concentration of cadmium was investigated in the kidney of 480 pigs from 10 different genetic lines, produced in Vojvodina (northern Serbia). This element was determined by flame atomic absorption spectrometry after mineralisation by dry ashing. The genetic line of pigs had no influence on the cadmium levels of kidney (P>0.05). The cadmium levels ranged from 0.168 to 1.160mg/kg, with an average...
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