Ecological Chemistry Aspects of Food Safety

The presented results reflect the researches carried out over the last decade, having as their object the soil, water, vegetal raw materials, and wines from the Republic of Moldova. The analysis of the possible anthropogenic contamination (NAA method) demonstrated the absence of systematic soil pollution. A total of 30 elements were determined in soil samples and the soil-leaves-fruit transfer factors were calculated. Approximately 3000 samples of local wines have been analysed to determine the residual quantities of pesticides. POPs were not found in any of the wine samples. In most of the examined cases (> 60% of samples), the lack of organic pesticide residues was observed. The migration of phthalates into different solutions from polymeric materials (PVC, rubber) and the influence of the temperature on the extraction rate were investigated. It has been shown that the contamination with phthalate residues occurs predominantly at the stage of grape processing, technological treatment, and storage.

Ecological Chemistry Through Popular Scientific Articles

Popularization of ecological chemistry is the aim of scientific-popular articles, which are published in the online journal for teachers. The articles of this type ecological chemistry are linked with literature and history. Due to this linkage, this module turns into an easily comprehensible one and it becomes fun. In all articles, there is also included very useful and interesting information pertaining to ecological chemistry. The titles of such articles must be underlined because they should not only show the common meaning of article, but they should also attract readers. The utmost interest is generated by the historical papers where chemical issues are connected with history. The period of alchemy is more popular and that's why the alchemical stories are described in the articles. The outcome of the pedagogical experiment has made it clear that such a method of teaching of ecological chemistry with scientific popular articles affects positively school student motivation and changes their attitude towards environmental pollution.

Ecological Chemistry Aspects of Food Safety

The presented results reflect the researches carried out over the last decade, having as their object the soil, water, vegetal raw materials, and wines from the Republic of Moldova. The analysis of the possible anthropogenic contamination (NAA method) demonstrated the absence of systematic soil pollution. A total of 30 elements were determined in soil samples and the soil-leaves-fruit transfer factors were calculated. Approximately 3000 samples of local wines have been analysed to determine the residual quantities of pesticides. POPs were not found in any of the wine samples. In most of the examined cases (> 60% of samples), the lack of organic pesticide residues was observed. The migration of phthalates into different solutions from polymeric materials (PVC, rubber) and the influence of the temperature on the extraction rate were investigated. It has been shown that the contamination with phthalate residues occurs predominantly at the stage of grape processing, technological treatment, and storage.

Conditions for creating a balance between learning styles on the example of the material of the discipline “Ecological Chemistry and Environmental Monitoring”

Aspects of learning styles modelled on R. Felder and B. Soloman are discussed in detail. The results of the study of the educational advantages of students of Kryvyi Rih State Pedagogical University of the speciality “014 Secondary education (Chemistry)” are presented. It is shown that the majority of students in the group are those who study visually, sensitively, actively and consistently. According to studied features of the student’s groups didactic material on the theme “Ecological Chemistry of the Lithosphere” of the content module “Ecological Chemistry of Environmental Objects” was elaborated and its role and place in the structure of the educational process determined. Forms of work that involve the use of different cognitive functions are described and therefore contribute to their balanced development. It allows a person to be flexible in the unrestrained development of technological progress, to be open to different ways of obtaining information and perceiving it without resistance and stress.