• Journal of Korean Society of Environmental Engineers
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• v.30 no.3
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• pp.286-292
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• 2008

This study was conducted to analyze and determine the formation potential of chlorination DBPs from seven urinary compounds with or without Br$^-$. Three of seven components were kynurenine, indole and uracil that were relatively shown high the formation potential of chlorination DBPs concentrations. The reported results of THMs/DOC with or without Br$^-$ in kynurenine showed that THMs/DOC was detected 86.9 $\mu$g/mg when Br$^-$ was not added, and THMs/DOC was detected 100.8 $\mu$g/mg when Br$^-$ was presented. In indole, THMs/DOC was increased from 6.58 $\mu$g/mg to 31.4 $\mu$g/mg when Br$^-$ was added. Moreover, among them, the highest, second-highest and third-highest HAAs/DOC were shown in kynurenine, uracil and indole respectively. Specially, HAAs/DOC was significantly deceased in kynurenine and indole when Br$^-$ was presented. This was a totally different phenomenon for THMs/DOC. TCAA was dominated in HAAs for kynurenine and indole, and DCAA was also dominated in HAAs for uracil. The highest formation of HANs/DOC was shown in kynurenine whether or not Br$^-$ presented, and DCAN was predominant in HANs. HANs was not formed by chlorination in uracil. In addition, the formation of CH/DOC was relatively low in kynurenine and indole. The formation of CH/DOC was specially high(1,270 $\mu$g/mg) in uracil when Br$^-$ was not added. The formation of CH/DOC was 1,027 $\mu$g/mg in uracil when Br$^-$ was added. The formations of THMs and HAAs were also investigated in kynurenine, indole and uracil when Br$^-$ was presented or not. The formation of THMs/DOC was higher in kynurenine and indole when Br$^-$ was presented. The formation of HAAs/DOC was reduced in kynurenine when Br$^-$ was added. The result could be attributed to higher formation of THMs/DOC in kynurenine when Br$^-$ was added. The formation of HAAs/DOC was also reduced in indole when Br$^-$ was added. To the contrary, this result was not attributed to higher formation of THMs/DOC in indole when Br$^-$ was added.

• Proceedings of the Korea Society of Environmental Toocicology Conference
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• 1996.12a
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• pp.75-75
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• 1996

최근 가장 관심이 집중되고 있는 음용수중의 미량오염물질로는 인위적으로 첨가되는 소독제(disi octant)로 인한 소독부산물(disinfection by-products: DBPs)을 들 수 있다. 1970년대부터 염소소독시 수중의 유기오염물길과 반응하여 발암성물질 과 돌연변이 물질이 다수 함유되어 있는 클로로포름(chloform)을 포함한 트리할로메탄(Trih리omethane: THMs)의 생성이 발견되었으며 이로 인한 건강상의 영향이 지속적으로 보고되고 있다. 염소소독시 780가지 이상의 화합물이 염소와 휴믹산(humic acids)과의 반응에 의해 생성되며, 이중 대부분이 할로겐 화합물로 알려져 있다. 염소 소독부산물로는 인체발암력을 지니고 있는 트리할로메탄(THMs) 이외에도 할로아세틱산(Haloaceticacids: HAAs), 할로아세토나이트릴(Haloacetbnitriles: HANs)등이 주 생성물질인 것으로 알려져 있으나 우러나라의 원수특성에 따른 소독부산물의 생성능 (Formation potential)에 대한 연구가 미흡한 실정이다. 본 연구에서는 우리나라 주요 4대강(한강, 대청호, 영산강, 낙동강)의 원수를 실험실내에서 염소처리하여 생성되는 소독부산물의 생성농과 pH, 체류시간 등의 조건에 따라 생성능을 조사하였다. 각 화합물은 추출 및 농축과정을 거친 후 GC/MSD를 사용하여 물질을 확인한 후 할로겐화합물에 민감한 GC/ECD를 사용하여 시료를 분석하였다. pH와 시간, 원수중의 유기물 함량이 소독부산물의 생성에 많은 영향을 미치는 것으로 나타났다. THMs은 알칼리에서, HAAs의 경우는 약산성에서 접촉시간이 증가할수록 높은 생성능을 보였고, HANs의 경우는 급속히 생성했다가 시간이 경과함에 따라 소멸하며 약산성에서 높은 생성능을 보임을 알 수 있었다, 강별로는 낙동강에서 THMs파 HANs의 생성능이 비교적 높았고, 영산강에서는 HAAs의 생성능이 높았다. 각 원수의 특성에 따른 생성능을 파악함으로써 생성능 저감방안을 마련하며, 소독 부산물질의 인체노출평가에 따른 위해성평가를 통해 관리기준을 설정해야 할 것이다.