In times of increased concern for human health and care for the environment, it is important to investigate the consumer behavior models in order to better manage the product supply. From the perspective of our research, it is important to learn about consumer attitudes, of a specific product, such as honey, so as to potentially strengthen the economic position of honey producers. The purpose of this article was to explore the consumers’ perceptions of organic and local honey in the Republic of Serbia and identify factors that contribute to predicting consumers’ willingness to pay (WTP) for organic and local honey. The ordinal regression was used to determine which factors influence the WTP for organic and local honey, and the findings show that the consumers were WTP more for organic honey than for local honey. Socio-economic characteristics of respondents and honey attributes affect consumers’ WTP. The higher monthly household income positively influences the WTP for organic honey, while on the other hand, the higher level of education has a positive influence on the WTP for local honey. The WTP for organic honey positively affected by the perceived importance of honey attributes, such as food safety and support for the local community. The frequency of the purchase of the local honey, the recommendations for the local honey purchase and the perceived importance of attributes, such as the care for the environment and nutritional properties, have a positive influence on the consumers’ WTP for local honey. From this, we can conclude that our understanding of all the factors that influence a consumer’s decision to allocate budget expenses for honey can help all stakeholders in creating an adequate pricing and promotional strategy for honey products.
This paper, through certain printing techniques, examines the types of occupational pollutants and the adverse impacts of the printing process. Also, it proposes the measures for better preservation and environmental protection. The paper analyzes the results of the quantitative identification of hazardous materials from various printing techniques: pad, screen, offset, flexographic, and digital. The study included the analysis of waste printing inks and purification of printing wastewater with adsorption methods. Besides that, the preliminary monitoring of ambient indoor air quality was performed. The multiple regression analysis was applied on the obtained experimental results, in order to determine the mutual correlation between the ozone and the total volatile organic compounds and microclimate parameters. It was observed that a quantitative correlation exists between the investigated occupational hazards, which also indicate the strength of the agreement. The obtained results could be useful to evaluate the tendency of hazardous air pollutants in printing industries worldwide.
The main objectives of the research were to estimate the relationship between the gas-particle partition coefficient, K p , and the octanol-air partition coefficient, K OA , of polycyclic aromatic hydrocarbons, PAHs, and polychlorinated biphenyls, PCBs, at industrial and urban sites in the Vojvodina region, to compare the obtained slopes and intercepts of the log K p vs. log K OA relations with the results of regression analyses reported in previous studies and to assess the consistency between the particle-bound fractions predicted by the K OA absorption model and the results obtained within field measurements. Fairly good log K P -log K OA correlations, with an average value of the correlation coefficients of 0.70, indicate that the partition coefficient K OA can be used as a prediction parameter of the gas-particle partitioning processes for both classes of compounds. The results of modelling the atmospheric distribution of PAHs using the K OA absorption model showed inconsistencies between the measured and predicted values of the particle-bound fraction, φ, of 1-2 orders of magnitude, while significantly higher discrepancies for PAHs in the Nap-Ace range were found. A similar variability of the measured/modelled φ values was obtained using the Junge-Pankow adsorption model, indicating the presence of particles enriched with PAHs. The conducted research showed that the K OA -based approach was less suitable for predicting the gas-particle partitioning of PCBs in urban and industrial sites, compared to the Junge-Pankow model.
The extent of noise in five printing companies in Novi Sad, Serbia, was determined using TES-1358A Sound Analyzer with RS-232 Interface. The data on equivalent A-level (dBA), as well as, maximum and minimum sound pressure levels were collected. It was found that folders and offset printing units are the predominant noise sources, with the average L (eq) levels of 87.66 and 82.7 dBA, respectively. Forty percent of the machines produced noise levels above the limiting threshold level of 85 dBA, allowed by law. The noise in all printing companies was dominated by higher frequency noise, and the maximum level mostly appeared at 4,000 Hz. For offset printing machines and folders, the means of L (eq) levels exceeded the permissible levels given by NR-80 curve at higher frequencies. There are no published studies of occupational noise and hearing impairment of workers exposed to hazardous noise in printing industry in Serbia. More extensive studies are needed to determine the exact impact of noise on the workers. Technical and organizational measures in order to control noise and prevent noise exposure, and general hearing conservation program to protect workers, should be introduced in printing industry.
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