Media occupy a large place in society. On the other hand, the field of information and communication technologies has become an indispensable media tool. Accordingly, it is necessary to investigate how and in what way information technologies, from computers as the means of production of media content, transmission and publication of the same, to modern software solutions, internet and mobile technology influence the rise or fall of certain media. A particular aspect of the research we put on the impact of IT on the profitability and unprofitability of some other media.

Usprkos ubrzanu razvoju novih tehnologija i novih medija u društvu, ne postoji dovoljno jasna rasprava o pitanjima vezanim za medijsku pismenost. Novo medijsko okruženje u kojem su recipijenti sve aktivniji i u kojem posvećuju više vremena medijskim sadržajima, zahtijeva kvalitetan i odgovoran pristup medijskom obrazovanju, posebno djece i mladih. U području medijskoga obrazovanja ne postoji sustavan pristup podizanju razine medijske pismenosti kod djece. To je sustavan, interdisciplinaran i dugotrajan proces promjene. Medijska pismenost podrazumijeva posjedovanje određenih znanja i kreiranje kritičkoga pristupa. Razvijanje kritičkoga diskursa i stjecanje kompetencija ključan je cilj i interes medijskoga opismenjavanja. Ključne riječi: medijska pismenost, kompetencija, medijski odgoj, časopisi za djecu i mlade, kritički diskurs

Environmental context Various UV-filtering chemicals are added to sunscreens in order to protect humans from the harmful effects of the sun. As a consequence of disinfection processes in swimming pools, sunscreen components may be chlorinated and change their structure and properties, leading to derivatives with higher toxicity. The safety of sunscreen components as well as that of their transformation products during their use requires further study. Abstract In this work is presented a synthesis pathway for the UV filter hexyl 2-(4-diethylamino-2-hydroxybenzoyl)benzoate (DHHB) and its chlorinated by-products in order to investigate the transformation behaviour and toxicity changes of DHHB during chlorination disinfection treatment. Acute toxicity was measured using standardised tests with aquatic model organisms. The potency of DHHB was compared with other benzophenone-like UV filters tested in the same experimental set-up. The toxicity of chlorinated compounds tested with photobacteria was found to be in a similar range to that of the starting compound. Microalgae were more sensitive to DHHB than to its chlorinated by-products, whereas daphnids were affected more by DHHB’s chlorinated products. The comparative toxicity data showed DHHB and even more its chlorinated by-products as more highly biologically potent to daphnids than other tested UV filters. The toxic potential of benzophenone-like UV filters should be interpreted together with data on their chemical properties, chlorination effects and affected organisms.