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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.19, no.1, 2001³â, pp.59-69
È£¼Ò ¹× ÇÏõ¿¡¼­ ȯ°æÈ£¸£¸ó Bisphenol-AÀÇ ºÐÇØ°Åµ¿¿¡ °üÇÑ ¿¬±¸
( Degradation Behavior of Endocrine Disrupter Bisphenol-A in the Lake and Stream )
°­È£;½Å°æ¼÷;±è¼±±â;ÁøÃ¢¼÷; Ãæ³²´ëÇб³ ȯ°æ°øÇаú;Ãæ³²´ëÇб³ ȯ°æ°øÇаú;Ãæ³²´ëÇб³ ȯ°æ°øÇаú;ÀϺ»Ãà»ê½ÃÇèÀå;
 
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º» ¿¬±¸´Â ÀÚ¿¬¼öÁßÀÇ ¹Ì»ý¹°À» ½ÄÁ¾¿øÀ¸·Î ÇÏ´Â TOC-HANDAI¹ý°ú OECD »ýºÐÇØ¹ýÀ» Ȱ¿ëÇÏ¿© ÀÚ¿¬¼ö ȯ°æ³»¿¡¼­ ȯ°æÈ£¸£¸ó¹°ÁúÀÎ ºñ½ºÆä³î A¿Í ³ë´ÒÆä³îÀÇ »ýºÐÇØ¼ºÀ» ºñ±³Æò°¡ÇÏ¿´´Ù. TOC-HANDAI¹ý¿¡ ÀÇÇÑ BPAºÐÇØ´Â 73-78% À̾ú°í OECD¹ýÀº À̺¸´Ù ´Ù¼Ò ³ôÀº 77-81%¸¦ ³ªÅ¸³»¾ú´Ù. µÎ ¹æ¹ýÀ» ÅëÇÑ BPAÀÇ ºÐÇØ¾ç»óÀº ´ëü·Î 2´Ü°è¸¦ °ÅÃÄ ÁøÇàµÇ¾ú´Ù. Áï Ãʱâ 1ÁÖÀÏ À̳»¿¡´Â ºÐÇØ¹ÝÀÀ¼Óµµ(k$_1$)°¡ 0.24-0.34day$^{-1}$·Î ¾ÆÁÖ ºü¸£°Ô ºÐÇØµÇ¾ú°í, ±× ÈÄ¿¡´Â ¾ÆÁÖ ¿Ï¸¸ÇÑ ºÐÇØ¾ç»óÀ» ³ªÅ¸³»¾ú´Ù(k$_2$´Â 0.02-0.05 $day^{-1}$). ÀÌ´Â BPA°¡ ÀÚ¿¬¼ö°è¿¡¼­ TOC·Î ¾à 20-25%°¡ Áß°£»ý¼º¹°·Î ÀÜÁ¸Çϰí ÀÖÀ½À» ½Ã»çÇØ ÁÖ°í ÀÖÀ¸¸ç, ÀÌ Áß°£´ë»ç¹°ÀÌ ¿Ï¸¸ÇÑ ºÐÇØ°úÁ¤¿¡ ±â¿©Çϰí ÀÖ´Ù. ¼ö°è ȯ°æ¿¡ µû¶ó ºÐÇØÀ²ÀÌ ÇöÀúÇÏ°Ô Â÷À̸¦ º¸ÀÌÁö¸¸ ³ë´ÒÆä³îÀº 20-48% Á¤µµ ¹Û¿¡ ºÐÇØµÇÁö ¾Ê´Â ³­ºÐÇØ¼º ȯ°æÈ£¸£¸ó ¹°ÁúÀÓÀ» ¾Ë ¼ö ÀÖ´Ù. ÇÑÆí, ±Ý°­¼ö°è³» Á¶»ç´ë»ó ÇÏõ°ú ´ëûȣ¼öÀÇ Á¶»çÁöÁ¡¿¡¼­ BPA´Â ¸ðµÎ ºÒ°ËÃâµÇ¾ú´Ù. ±×·¯³ª °ø´ÜÆó¼ö Á¾¸»Ã³¸®Àå À¯ÀÔ¼ö¿¡¼­ Æò±Õ 25 ppb°¡ °ËÃâµÇ¾ú´Ù.
Among the biodegradability tests, TOC-HANDAI and OECD method were utilized to examine the degree of biodegradation of endocrine disruptors, Bisphenol A (BPA) and Nonylphenol. Both methods used natural water microcosms and measured their biodegrada-bilities of BPA and Nonylphenol, in terms of TOC or DOC degradation with time for 28 days. Biodegradabilities for BPA, 73-78% with TOC-HANDAI method and 77-81% with OECD method were obtained respectively at the end of experiment. There was no difference in BPA degradation between two methods. BPA degradation was described by two distinct first order decay rates (k$_1$ and k$_2$) which could be separated by a simple visual fitting. Most of the initial decay reaction accelerated within 1-7 days with k$_1$of 0.24-0.34 $day^{-1}$. And the following another long term first order decay coefficient (k$_2$) showed 0.02-0.05 day$^{-1}$ with much flat slope. About 20-25% of initial BPA remained at the end of experiment. It suggests that the remaining TOC components in BPA biodegradation considered to be refractory metabolites of BPA. Nonylphenol at each sampling point was appeared to be mineralized 20-48% of initial TOC concentration. Consequently Nonylphenol seems more recalcitrant against biodegradation. BPA was not detected in the detection limit of ppb in the watershed of Daechung reservoir and Kum river. However 25 ppb concentration of BPA was detected at the influent of industrial wastewater treatment plant in Taejon.
 
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Biodegradability;First order decay coefficient;Bisphenol-A;Nonylphenol;OECD method;Natural water microcosms;TOC-HANDAI method;
 
ȯ°æ»ý¹° / v.19, no.1, 2001³â, pp.59-69
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111921492160)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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