Title Preispitivanje aktualnih nacionalnih kriterija kakvoće mora za kupanje Title (english) REVIEWING OF CURRENT NATIONAL BATHING WATER QUALITY CRITERIA Author Lina Tenžera Mentor Darija Vukić Lušić (mentor)Committee member Željko Linšak (predsjednik povjerenstva)Committee member Dražen Lušić (član povjerenstva)Committee member Darija Vukić Lušić (član povjerenstva)Granter University of Rijeka Defense date and country 2018-09-26, Croatia Scientific / art field, BIOMEDICINE AND HEALTHCARE Abstract Granične vrijednosti ispitivanih mikrobioloških pokazatelja (E. coli i intestinalni enterokoki), koje predstavljaju temelj za ocjenjivanje kakvoće mora za kupanje, imaju veliki značaj za pravovremeno uočavanje negativnih promjena u okolišu te sanaciju onečišćenja. Republika Hrvatska je u nacionalnoj Uredbi o kakvoći mora za kupanje (NN 73/08) definirala stroţe kriterije ocjenjivanja, u odnosu na one propisane EU Direktivom o upravljanju kakvoćom vode za kupanje (BWD, 2006/7/EC), za istu
... More kategoriju kvalitete mora. Uredbom (NN 73/08) je osim stroţeg kriterija za E. coli, primijenjen i niţi omjer E. coli/enterokoki (EC/ENT = 1,5) u odnosu na onaj definiran u BWD (EC/ENT = 2,5). Omjer EC/ENT od 1,5 odreĎen je temeljem rezultata ispitivanja iz razdoblja u kojem je kao hranjiva podloga za brojanje E. coli korišten visoko selektivni agar mFC, koji je prema rezultatima moguće podcijenio realan broj fekalnih koliformnih bakterija, i time smanjio odnos EC/ENT. Cilj ovog istraţivanja bio je ispitati valjanost aktualnih kriterija za ocjenu kakvoće mora za kupanje prema Uredbi (NN 73/08). Analizirani su podaci u razdoblju od 2009. do 2017. g. iz nacionalnog programa praćenja kakvoće mora za kupanje u Primorsko-goranskoj ţupaniji. Prema podacima iz trogodišnjeg razdoblja primjene aktualne CCA hranjive podloge za brojanje E. coli (2015. - 2017. g.), srednja vrijednost omjera EC/ENT iznosi 1,8 (u ciljanom rasponu koncentracija mikrobioloških pokazatelja), što je viša vrijednost od omjera primijenjenog u Uredbi (EC/ENT = 1,5). Predloţena je korekcija kriterija povećanjem granične vrijednosti za E. coli sa 300 cfu/100 ml na 400 cfu/100 ml, bez mijenjanja granične vrijednosti za enterokoke. Time bi se EC/ENT omjer povećao na 2. Primjenom korigiranih graničnih vrijednosti na rezultate ispitivanja od 2009. - 2017. g. (N = 21.802) za 3 % je smanjen broj lokacija koje prema kriterijima Uredbe nisu izvrsno ocijenjene, kao i udio neujednačeno ocjenjenih uzoraka prema E. coli i enterokokima. Neslaganje u konačnoj ocjeni plaţa u Primorsko-goranskoj ţupaniji od 2014. do 2017. g. u odnosu na BWD smanjeno je sa tri od šest plaţa na samo jednu. U cilju povećanja razine zaštite pučanstva, novim predloţenim kriterijima i dalje bi se zadrţala viša razina sigurnosti za korisnike plaţa u odnosu na minimalno definiranu prema BWD, meĎutim postigla bi se veća podudarnost u ocjeni kategorije kakvoće primjenom oba ispitivana mikrobiološka parametra. Less Abstract (english) The limit values of the examined microbiological indicators (E. coli and intestinal enterococci), which represent the basis for evaluating bathing water quality, are of great importance for timely detection of negative environmental changes and remediation of pollution. Republic of Croatia in the national Regulation for bathing water quality (NN 73/08), has defined stricter criteria for evaluation, than those prescribed by the EU Bathing Water Directive (BWD, 2006/7/EC), for the same
... More sea quality category. In addition to the stricter criteria for E. coli, the Regulation (NN 73/08) applied a lower E. coli/enterococci ratio (EC/ENT = 1.5) compared to that defined in BWD (EC/ENT = 2.5). The EC/ENT ratio of 1.5 was determined on the basis of the results of the study in which a highly selective agar mFC was used as the nutrient base for counting E. coli, which according to the results could underestimate the real number of faecal coliform bacteria, thereby reduce the EC/ENT ratio. Goal of this study was to examine the validity of current criteria for evaluating the bathing water quality according to the Regulation (NN 73/08). In the period from 2009 to 2017, data have been analyzed from the national bathing water quality monitoring program in the Primorje-Gorski Kotar County. According to data from a three-year period of application of current CCA cultivation media for counting E. coli (2015-2017), the mean value of the EC/ENT ratio is 1.8 (in the targeted range of microbiological concentrations), which is higher than the ratio applied in the Regulation (EC/ENT = 1.5). It was proposed the correction of criteria by increasing the limit value for E. coli from 300 cfu/100 ml to 400 cfu/100 ml, without changing the limit value for enterococcus. This would increase the EC/ENT ratio to 2. Using corrected limit values on the results from 2009 to 2017 (N = 21,802), for 3 % is decreasing the number of sites that were not evaluated greatly according to the criteria of the Regulation, as well as the proportion of unevenly evaluated samples for E. coli and enterococci. From 2014 to 2017 the uncertainty in the final grading of beaches in the Primorje-Gorski Kotar County in relation to BWD was reduced from three out of six beaches to only one. In order to increase level of protection of the population, the new proposed criteria would continue to maintain a higher level of safety for beach users in relation to the minimum defined by the BWD, but greater compatibility would be achieved in grading the quality category by applying both examined microbiological parameters. Less Keywords
kakvoća mora za kupanje
kriteriji ocjenjivanja
omjer E. coli/crijevni enterokoki
hranjiva podloga
Keywords (english)
bathing water quality
evaluation criteria
ratio of E. coli/intestinal enterococci
cultivation media
Language croatian URN:NBN urn:nbn:hr:184:874901 Study programme Title: Study of Sanitary Engineering Type of resource Text File origin Born digital Access conditions Access restricted to students and staff of home institution Terms of use Created on 2018-12-06 17:50:16
