| Author/Editor | Bitenc, Katarina; Gale, Ivanka; Petrovič, Aleš | |
| Title | Koncentracije trihalometanov v bazenski kopalni vodi v Sloveniji | |
| Translated title | Trihalomethane concentrations in swimming pool water in Slovenia | |
| Type | članek | |
| Vol. and No. | Letnik 25, št. 2 | |
| Publication year | 2009 | |
| Volume | str. 71-76 | |
| ISSN | 1318-2927 - Asian philosophy | |
| Language | slv | |
| Abstract | Trihalometani (THM) so rezultat reakcije prostega klora in organskih prekurzorjev. Obiskovalci bazenskih kopališč so zato THM izpostavljeni preko vdihanega zraka, preko zaužite vode, absorbirajo pa se tudi skozi kožo. Pri kratkotrajni izpostavljenosti THM škodljivo delujejo predvsem na centralni živčni sistem, ledvice in jetra ter so lahko vzrok za nastanek astme. Mednarodna agencija za raziskave raka (IARC) uvršča kloroform in bromodiklorometan v 2B skupino (snov je morda rakotvorna za človeka). Vzorčenje, laboratorijske preskuse in ugotovitve o skladnosti bazenske vode naTHM opravljajo akreditirani laboratoriji. Zakonodaja določa mejno vrednost THM v bazenski kopalni vodi in sicer 0,050 mg/l, ki se bo konec leta 2010 znižala na 0,020 mg/l. V letu 2007 je bilo v Sloveniji iz 541 bazenov odvzetih 4768 vzorcev za preskušanje bazenskih voda na THM. V primerjavi z letom 2006 se je število neskladnih vzorcev zaradi THM znižalo iz 51 % na 18 %in sicer zaradi spremembe zakonodaje. V primeru, da se mejna vrednost THM ne bi zvišala, bi imeli v letu 2007 še vedno 47 % neskladnih vzorcev zaradi presežene vrednosti THM. Na znižanje mejne vrednosti THM v letu 2010 se morajo upravljavci bazenov in bazenskih kopališč ustrezno pripraviti. Da bi izboljšali higiensko kakovost bazenske vode je potrebno kontrolirati število kopalcev in uveljaviti osnovna pravila ravnanja obiskovalcev, ki so predpisanaz kopališkim redom.Trihalomethanes (THMs) are the result of reaction between chlorine and organicmaterial. Visitors of swimming pools are therefore exposed to THMs by inhalation, ingestion or by dermal absorption. Short exposure to THMs may produce kidney, liver and central nervous system damage and can be an important cause of allergic asthma. The International Agency for Research on Cancer (IARC) has classified chloroform and bromodichloromethane as possibly carcinogenic to humans (Group 2B). The role of accredited laboratories is to define the THMs concentrations in bathing water. Minimum Contaminant Level (MCL) for THMs in swimming pool water is 0.050 mg/l, which will be lowered in 2010 to 0.020 mg/l. In 2007 there were 541 swimming pools in Slovenia, 4768 samples were taken for THM analysis. Only 18 % of samples were not in compliance with MCL for THMs in comparison with year 2006 when this share was 51 % and this was all because of changed legislation. In case that MCL of THMs had not increased we would have had 47 % of inconsistent samples. Managers of swimming pools will have to be prepared on reduced MCL for THMs inyear 2010. For improving the quality of bathing water it is necessary to control number of bathers and to exercise basic rules for visitors such as showering before going swimming. | |
| Keywords | bazeni trihalometani zakonodaja trihalomethanes swimming pools legislation |