Jasenka Sapunar-Postruznik

Learn More
A method based on matrix solid-phase dispersion (MSPD) was developed for the gas chromatographic (GC) determination of chloramphenicol (CAP) residues in animal muscle tissue. Muscle tissue was blended with octadecylsilyl-derivatized silica (C(18)). A column made from the C(18)/muscle tissue matrix was washed with n-hexane and acetonitrile/water (5 + 95),(More)
The aim of this study was to assess the suitability of the perirenal fatty tissue for the determination of an organochlorine pesticide. Fatty tissue samples were prepared by the matrix solid phase dispersion (MSPD) method, and pesticide levels were determined by gas chromatography on capillary column using an electron capture detector. Results were(More)
The level of lead and cadmium in foodstuffs in the Republic of Croatia was determined by the method of atomic absorption spectrophotometry from the beginning of 1988 to mid 1993. Mean weekly dietary intake of these toxic metals was then estimated on the basis of the level of contamination and consumption of the foodstuffs concerned. The results show that(More)
Total amounts of arsenic in foods sold in Croatia were determined over a 5-year period (1988-1993). Highest mean levels were recorded in the following food groups: fish (498 micrograms/kg), fishery products (270 micrograms/kg) and cheese and dairy products (39 micrograms/kg); lowest levels were contained in fruit, chocolate and fruit products (0.2, 0.2 and(More)
During the analysis of chlorinated pesticides in animal fat tissue applying the matrix solid-phase dispersion method, and notwithstanding the use of a gas chromatograph with a highly selective capillary column, two peaks occur: one with a retention time very similar to that of lindane, and the other almost identical to that of dieldrin. Repeated analyses of(More)
The concentration of quinoxaline-2-carboxylic acid (QCA) determined by HPLC after alkaline hydrolysis of liver and muscle of swine, ranged from < 3 ng/g to 45.3 ng/g in liver, and from < 3 ng/g to 10.8 ng/g in muscle samples. After the 77th day of therapy QCA was found in samples of liver (9.7 ng/g). Recoveries obtained for both liver and muscle were 70% at(More)
  • 1