Biomedical subjects

H Mazur

Publications and source records attributed to H Mazur.

At least 19 recordsLinked to original sources

PubMed1990

[Examination of plastic food-packaging materials].

The aim of the work was evaluation of the hygienic quality of plastic packaging material and its elements intended for direct contact with food products. The study carried out in the years 1986-1989 comprised 3066 samples taken from 20 provinces. A considerable number of the studied materials had no attest of the State Institute of Hygiene (19.54%). The proportion of samples with such attest accepted as unsuitable was lower than that without attest (unacceptable organoleptic features--4.83%, or results of chemical investigations--2.87%). In some materials high amounts of cadmium and lead were found which suggested that they had been made of technical plastic materials containing unacceptable stabilizers or dyes derived from these metals. The obtained results indicate the necessity of control of plastic materials intended for contact with food products to eliminate these which would have a negative effects on the health.

Cadmium↗

PubMed1990

[Content of metals in vegetables from various regions of Poland in the years 1986-1988. I. Content of lead, cadmium and mercury].

The content of lead, cadmium and mercury was determined in various sorts of Polish vegetables grown on soil or in hothouses in the years 1986-1988 using for the determination of Pb and Cd the extraction flame ASA method after dry mineralization at about 400 degrees C and for Hg the flameless ASA method after wet mineralization. In 1988 soil investigations were conducted parallelly in the areas where these vegetables had been grown. Vegetable samples were taken directly from the producers in 18 provinces, from areas not contaminated with these metals by industrial plants and traffic. About 2.5 thousand vegetable samples and about 650 soil samples were investigated. A considerable part of the vegetables, especially those whose roots are consumed, contained excessive amounts of lead--over 0.3 mg/kg (e.g. over 20% of samples of parsley leaves) and cadmium--over 0.3 mg/kg (nearly 40% of carrots samples, and about 30% of beets, lettuce grown on soil or in hothouses, and parsley roots, about 20% of samples of parsley leaves grown on soil). The levels of mercury were usually of the order of thousandths mg/kg. The mean values of these metals in soil were frequently much higher than the values regarded as most frequent in the soils of not contaminated regions of Poland.

Cadmium↗

PubMed1990

[Content of metals in vegetables from various regions of poland in the years 1986-1988. II. Content of zinc and copper].

The content of zinc and copper was determined in various sorts of vegetables grown in hothouses or on soil. This content was determined also in the soil where these vegetables were grown. The samples of these vegetables were taken directly from the producers in 18 provinces of Poland from the areas not contaminated by industrial plants and traffic. The content of Cu and Zn was determined after dry mineralization of samples at 400 degrees C by ASA method in adequately diluted aqueous solutions of the mineralized substances. In all 2522 samples of vegetables grown in hothouses or on soil and 635 samples of soil were studied. The zinc level in most samples was lower than the permissible level 10 mg/kg. The highest amounts of zinc were found in red beets, and in the leaves of parsley grown in hothouses and on soil. The copper content in these samples was much below the permissible level of 4 mg/kg. The mean values of copper and zinc in soil samples were higher than the values accepted as present most frequently in soil in non-contaminated regions of Poland, that is 15 and 90 mg/kg respectively.

Copper↗

PubMed1988