Chlorine disinfection is carried out for the purpose of sterilization of microbes existing in drinking water. Chlorination may cause the formation of disinfection by-products (DBPs) by the reaction of free chlorine with humic substance in the water. In particular, the DBPs including trihalomethanes (THMs), haloacetic acids (HAAs), haloacetonitriles (HANs), and haloketones exist in tap water. The US Environmental Protection Agency (US EPA) suggests 80 μg/L THMs and 60 μg/L HAAs as maximum contamination levels for drinking water. This study was performed to detect the level of DBPs in drinking water and to measure disinfection by-product formation potential (DBPFP) of raw water with four different properties. After 24 h of chlorination, the measured level of trihalomethane formation potential (THMFP), haloacetic acid formation potential, and haloacetonitrile formation potential ranged from 55.0 to 102.6 μg/L, from 9.1 to 23.6 μg/L, and from 10.3 to 33.6 μg/L, respectively. DBPFP was the highest at pH 7.0 and increased with the reaction time. Among the DBPFP, THMFP was detected more frequently than the others. In the treated water, DBPs were measured with a mean value of 47.0 μg/L. Chloroform, dichloroacetic acid, trichloroacetic acid, and dichloronitrile all known as hazardous compounds, were measured as major parts of DBPs.

Rapid Communications in Mass SpectrometryVolume 16, Issue 12 p. 1238-1242 Letter to the Editor Determination of 4-hydroxynonenal in rat plasma by gas chromatography/mass spectrometry Yunje Kim, Corresponding Author Yunje Kim yjkim@kistmail.kist.re.kr Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaDoping ontrol Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang Seoul, Korea;Search for more papers by this authorDonghyun Kim, Donghyun Kim Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaSearch for more papers by this authorJoungboon Hwang, Joungboon Hwang Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaSearch for more papers by this authorDuck-Hee Lee, Duck-Hee Lee Young In Scientific Co., Young-Hwa BLDG. 547, Shin Sa Dong, Kang Nam Ku, Seoul, Korea 135-210Search for more papers by this authorMyungsoo Kim, Myungsoo Kim Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaSearch for more papers by this author Yunje Kim, Corresponding Author Yunje Kim yjkim@kistmail.kist.re.kr Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaDoping ontrol Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang Seoul, Korea;Search for more papers by this authorDonghyun Kim, Donghyun Kim Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaSearch for more papers by this authorJoungboon Hwang, Joungboon Hwang Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaSearch for more papers by this authorDuck-Hee Lee, Duck-Hee Lee Young In Scientific Co., Young-Hwa BLDG. 547, Shin Sa Dong, Kang Nam Ku, Seoul, Korea 135-210Search for more papers by this authorMyungsoo Kim, Myungsoo Kim Doping Control Center, Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, KoreaSearch for more papers by this author First published: 16 May 2002 https://doi.org/10.1002/rcm.694Citations: 5Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume16, Issue1230 June 2002Pages 1238-1242 RelatedInformation

The copper-catalyzed N-arylation of amines with hypervalent iodonium compounds with secondary aliphatic amines, aromatic amines, azoles and amides was accomplished with catalytic CuI (10 mol%) or Cu(acac)(2) (5 mol%) in the presence of Na2CO3 or K2CO3 as a base in CH2Cl2 or toluene under mild conditions.