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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.2, 2008³â, pp.166-173
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( Chemical Forms and Release Potential of Heavy Metals from the Lime Treated Sediments ) |
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| ¿À¿°¹°ÁúÀ» Á¦°ÅÇϱâ À§ÇÑ ¹æ¹ý Áß ÇϳªÀÎ ¼®È¸ 󸮸¦ ÅëÇÏ¿© ûÃÊÈ£ Ç¥Ãþ ÅðÀû¹°¿¡ ÇÔÀ¯µÈ Á߱ݼÓÀÇ Á¸Àç ÇüÅ º¯È¿Í ȯ°æº¯È½Ã ¼öÃþÀ¸·ÎÀÇ ¿ëÃâ°¡´É¼ºÀ» ¾Ë¾Æº¸¾Ò´Ù. ¿¬¼ÓÃßÃâ ¹æ¹ýÀ» »ç¿ëÇÏ¿© Á߱ݼÓÀÇ ÈÇÐÀû ÇüŸ¦ ºÐ¼®ÇÏ¿´°í ¼öÃþÀ¸·ÎÀÇ ¿ëÃâ °¡´É¼ºÀº ÈíÂøµÈ ÇüÅÂ¿Í °øÄ§µÈ ÇüÅÂÀÇ ÇÕÀ¸·Î ÇÏ¿´´Ù. ¼®È¸ ó¸® ÀüÀÇ Ã»ÃÊÈ£ ÅðÀû¹°¿¡ ÇÔÀ¯µÈ Cd°ú Cu ¹× ZnÀÇ Á¸ÀçÇüÅ´ ȣ¼ö ¹Ù´Ú°ú °°Àº Çø±â¼º »óÅ¿¡¼ ¾ÈÁ¤µÈ »êȼº ÇüŰ¡ ¸¹¾ÒÀ¸³ª ¼®È¸ ó¸® ½Ã·á¿¡¼´Â ÀÌ ºÎºÐÀÇ ºñÀ²ÀÌ ÁÙ¾îµç ¹Ý¸é ¿ëÃâµÇ±â ½¬¿î ºÎºÐÀÎ ÈíÂøµÈ ÇüÅÂ¿Í °øÄ§µÈ ÇüÅÂÀÇ ºñÀ²ÀÌ Áõ°¡ÇÏ¿´´Ù. ÀÌ´Â ¼®È¸ ÷°¡·Î ÀÎÇÑ °ø±Ø¼öÀÇ pH»ó½Â°ú ´ë±âÁß¿¡ ³ëÃâ·Î ÀÎÇÑ »êÈ¿¡ ÀÇÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. ¼öÃþÀ¸·Î À̵¿ °¡´ÉÇÑ ºÎºÐÀÇ ºñÀ²Àº CdÀÇ °æ¿ì ¼®È¸ÇÔ·® 15%, PbÀº 10%, Cu¿Í ZnÀº 20%¿¡¼ ³ô°Ô ³ªÅ¸³ª Á߱ݼÓÀ¸·Î ¿À¿°µÈ ÅðÀû¹°ÀÇ ¼®È¸ 󸮴 ÅðÀû¹°¿¡ ÇÔÀ¯µÈ Á߱ݼÓÀÇ ¿ëÃâÀ» Áõ°¡½Ãų °¡´É¼ºÀÌ ÀÖ´Â °ÍÀ¸·Î »ç·áµÈ´Ù. |
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| Chemical forms and release potential of heavy metals were studied in the lime treated sediment of lake Chungcho. Chemical forms of heavy metals were analyzed using a sequential extraction method, and release potential of heavy metals was evaluated by the ratio of the content of labile forms to total metal one. Dominant form of Cd, Cu, Pb, and Zn in the untreated sediments was organic/sulfidic form that is stable in the reducing environment such as the bottom of Lake Chungcho. With liming of the sediment, the chemical forms of studied metals were greatly changed from organic/sulfidic form to adsorbed and reducible form, especially Cd and Cu to adsorbed and reducible form, but Pb and Zn to reducible form. It is believed that increase of unstable form of heavy metals in the sediments by liming was caused by the increase of pH of the pore water at the expense of organic/sulfidic form. Thus, we concluded that the liming approach currently used in the treatment of dredged sediments might cause the increase of labile form which is easily dissolved, and may increase the release of metals from the sediment into overlying water. |
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| Ű¿öµå |
| lime treatment;sediment;sequential extraction method;chemical form distribution;release potential; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.2, 2008³â, pp.166-173
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200827448607750)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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