[Peculiarities of air pollution in the production of continuous glass fiber].

With the use of a one-stage method we have carried out hygienic studies of the air of work area of the production of continuous glass fiber. There was revealed the emission of epichlorohydrin, formaldehyde, ethane acid, hydrochloride, spray of mineral petroleum oil, fine glass fiber dust in air of the work area. There was established the combined effect of hazardous substances of unidirectional action with the summation effect on the body.

[Assessement of combined impact of hazards on petrochemical and chemical workers' health].

We have conducted a study on working conditions and health status of petrochemical workers. The main hazardous factor of work environment and manufacture process has been found to be work environment air pollution caused by Class 2-3 hazards. Depending on the composition of the current complex of hazards, the manufacture workers comprise three groups determined by the impact of aromatic hydrocarbons, olefin oxides and their combinations.

[Improvement of storage capability of blood by the use of biocompatible absorbents].

A new filtration method for leucocyte and chloride ion depletion of erythrocyte concentrates in one step by DEAE cellulose was developed. After passage of the packed red cells through this filter material a chloride depletion of 70-80% and a leucocyte depletion of 90% could be reached. The 25 degrees C storage of this in-line-filtered red cells characterized by metabolic parameters (ATP, 2,3-DPG) suggests the possibility of a long-term red blood cell storage.

[Permselect--a new substance for leukocyte elimination].

Permselect particles consisting of purified plant cell wall ghosts obtained from the biomass of a suspension culture of Chenopodium album L. show a very high efficiency for leukocyte binding. A package containing 1 g dry Permselect eliminates 99-100% of leukocytes from 80 ml of fresh blood, preserved whole blood, or red blood cell concentrates.

[Hemapheresis using vesicular plant separation materials].

The present paper deals with the separation of cells from soluble compounds of blood by means of exclusion chromatography using a recently described vesicular packing material made from the cell wall framework of the small duckweed Wolffia arrhiza. The cells of the periphere blood are hardly retarded in passing through a packing of the vesicular material and eluted as sharp peak at an elution volume which is near to 30% of the column volume. The behavior of cells is similar to that of the excluded high molecular weight plasma proteins (e.