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한강완,전재철,조재영,김성조 ( Kang Wan Han,Jae Chul Chon,Jae Young Cho,Seong Jo Kim ) 한국환경농학회 1997 한국환경농학회지 Vol.16 No.4
C㏊nges of nutrient material and heavy metals of irrigation water and natural supplies by irrigation water into 1.0㏊ of paddy field during the rice cultivation was investigated pH of irrigation water ranged 6.45∼8.34 and electrical conductivity showed 110μS/㎝ in the first irrigation period and commonly showed 90μS/㎝. The content of T-N, NH4-N and NO₃-N were 3.09∼12.36, 0.17∼1.34 and 2.70∼10.72㎎/L respectively. The content of T-P was 0.09∼0.22㎎/L and ortho-P was not detected. The content of Ca^(++), Mg^(++), Na^+ and K^+ showed 0.89∼5.12, 1.12∼2.76, 1.74∼4.52 and 1.34∼4.18㎎/L regardless of irrigation season respectively. Only Cu and Zn of heavy metals were detected 0.001∼0.009 and 0.007∼0.091㎎/L, but Pb, Cd, Cr and Ni were not detected When supplied 4,250㎥ of an irrigation water into 1.0㏊ of paddy field, natural supplies of nutrient materials were 29.67㎏ of T-N, 1.80㎏ of NH₄-N, 24.57㎏ of NO3-N and 0.51㎏ of T-P. Also Ca^(++). Mg^(++), Na^+, K^+, Cl^- and SO₄^(2-) were supplied 9.42, 7.09, 13.34, 9.08, 40.27 and 41.38㎏ respectively. Only Cu and Zn of heavy metals were supplied 0.017㎏ of Cu and 0.133㎏ of Zn, Pb, Cd, Cr and Ni were not supplied
한강완,조재영,손재권,Han, Kang-Wan,Cho, Jae-Young,Son, Jae-Gwon 한국환경농학회 1998 한국환경농학회지 Vol.17 No.4
공업단지에서 배출되는 대기오염물질이 확산작용에 의해 농업지대에 내리는 강우에 영향을 미치는지를 조사하기 위하여 1997년 5월 1일부터 1998년 4월 30일까지 비오염지로 예상되는 전라북도 진안군 마령면 수도작 농업지대에 내리는 강우중 화학성분의 함량변화와 천연공급량을 조사한 결과는 다음과 같다. 강우pH는 $6.44{\sim}7.24$, EC는 $14.23{\sim}30.67{\mu}S/cm$의 범위를 나타내었다. 전질소의 함량은 $1.43{\sim}10.14㎎/L$, 암모니아태질소는 $0.57{\sim}4.39㎎/L$, 질산태질소는 $0.18{\sim}1.69㎎/L$의 범위를 나타내었다. 전인산은 $0.015{\sim}0.087㎎/L$의 범위를 나타내었으며, 가용성인산은 검출되지 않았다. 부유물질은 $3.6{\sim}15.3㎎/L$, $Ca^{++}$는 $0.37{\sim}1.66㎎/L$, $Mg^{++}$는 $0.17{\sim}0.52㎎/L$, $Na^+$는 $0.015{\sim}0.087㎎/L$ 그리고 $K^+$ 는 $0.17{\sim}0.58㎎/L$의 범위를 나타내었다. 조사대상 중금속중 중금속중 Cd, Pb, Ni, Cr은 검출되지 않았으며, Zn의 경우 $0.009{\sim}0.098㎎/L$, Cu의 경우 불검출${\sim}0.019㎎/L$의 범위를 나타내었는데 그 함량이 아주 낮은 수준이었다. 음이온성분 가운데 $Cl^-$는 $1.02{\sim}7.24㎎/L$, $SO_4^{2-}$는 $3.73{\sim}14.47㎎/L$, 의 범위를 나타내었다. 각종 화학성분의 천연공급량은 전질소 39.48㎏/㏊/yr, 암모니아태질소 21.82㎏/㏊/yr, 질산태질소 6.90㎏/㏊/yr, 전인산 0.68㎏/㏊/yr로 공급되었다. 양이온성분의 공급량은 각각 $Ca^{++}$ 4.46㎏/㏊/yr, $Mg^{++}$ 5.00㎏/㏊/yr, $Na^+$ 7.26㎏/㏊/yr, $K^+$ 5.46㎏/㏊/yr로 나타났다. 중금속물질 가운데 Pb, Cd, Ni와 Cr은 검출되지 않았으며, Cu와 Zn의 공급량은 각각 0.024㎏/㏊/yr, 0.44㎏/㏊/yr로 나타났다. 음이온성분중 $Cl^-$는 31.16㎏/㏊/yr, $SO_4^{2-}$ 98.76㎏/㏊/yr로 나타났다. Changes of chemical components and natural supplies by precipitation at agricultural zone in Chinan area of Chonbuk province from May 1, 1997 to April 30, 1998 were investigated. pH of precipitation ranged $6.44{\sim}7.24$ and EC showed $14.23{\sim}30.67{\mu}S/cm$. The $total{\sim}N$, NH4-N and NO3-N were $1.43{\sim}10.14$, $0.57{\sim}4.39$, and $0.18{\sim}1.69㎎/L$ respectively. The content of total-P showed $0.015{\sim}0.087㎎/L$ but ortho-P was not detected. The content of suspended solid, $Ca^{++}$, $Mg^{++}$, $Na^+$ and $K^+$ showed $3.6{\sim}15.3$, $0.37{\sim}1.66$, $0.17{\sim}0.52$, $0.22{\sim}0.87$, and $0.17{\sim}0.58㎎/L$. The content of SO42- and Cl- showed $3.37{\sim}014.47㎎/L$ and $1.02{\sim}7.24㎎/L$ respectively. Only Cu and Zn of heavy metals were detected $0{\sim}0.019㎎/L$ and $0.009{\sim}0.098㎎/L$ but Cd, Cu, Ni and Cr were not detected. Natural supplies of chemical components were 39.48㎏/ha/yr of total-N, 21.82㎏/ha/yr of $NH_4-N$, 6.90㎏/ha/yr of $NO_3-N$ and 0.68㎏/ha/yr of total-P. Also $Ca^{++}$, $Mg^{++}$, $Na^+$, $K^+$, $SO_4^{2-}$ and $Cl^-$ were supplied 14.46, 5.00, 7.26, 5.46, 98.76 and 31.16㎏/ha/yr respectively. Only of heavy metals were supplied 0.024㎏/ha/yr of Cu and 0.044㎏/㏊/yr of Zn.
한강완,조재영,김성조 ( Kang Wan Han,Jae Young Cho,Seong Jo Kim ) 한국환경농학회 1997 한국환경농학회지 Vol.16 No.1
This studies was carried out to investigate the soil contamination and water quality affected by agricultural activities in the Keum river Districts. Soil pH of the Keum river districts were 5.56∼7.09 in Keum river headwater and Namdae-cheon but that of Keumgang-lake were 5.07∼7.21 because of the cattle shed and industrial complex around. Total nitrogen contents of soils were found difference as period of fertilizer application. Total phosphorous content of soils no difference were found between the headwater and Keumgang-lake. Heavy metal contents of soils were natural background level. Water pH of the Keum river districts ranged from 6.59 to 7.80 and COD was maintain below 1.0 ㎎/L. Total nitrogen content affected by a livestock wastes and sewage water were the higher than that of others and total phosphorous content showed below 0.5 ㎎/L. Nitrate nitrogen and ortho-phosphate contents were very high according to the influence a livestock waste and sewage water in headwater region of the Keum river partly. Chlorine and sulfate contents were high according to the influence of sea water invasion. Heavy metal contents of waters were natural background level.
Peat 에 의한 중금속 Cd , Cu , Zn 의 흡착
한강완,최현옥 ( Kang Wan Han,Hyun Ok Choi ) 한국환경농학회 1992 한국환경농학회지 Vol.11 No.3
Heavy metal adsorption on peat was studied to examine the utilization of abundant natural resouces as pollution control. The smaller the peat particle size, the more the heavy metals studied were adsorbed. Adsorption of heavy metals on peat was greater in single metal solutions than in mixed solutions, and the order of adsorption amount on peat was Cu > Cd > Zn. The most effective pH range of the adsorption of Cd, Zn, and Cu was between 4 and 6. With increasing the concentration of heavy metals the amount of adsorption on peat was increased, but the adsorption ratio was decreased. The adsorption of heavy metals on peat was fitted to the Freundlich isotherm and peat was appeared to be an effective adsorbent of the heavy metals. The treatment of polyethyleneimine(PEI) on the peat surface effectively increased adsorption capacity of the heavy metals. Because of its higher energy content, the heavy metal adsorbed peat could be utilized as a energy source. After burning the peat, the reduced peat volume could be save the expenses for waste disposal.
논 관개수에 함유된 토사 중 영양물질의 함량변화와 천연공급량
한강완,전재철,조재영,김성조 ( Kang Wan Han,Jae Chul Chon,Jae Young Cho,Seong Jo Kim ) 한국환경농학회 1997 한국환경농학회지 Vol.16 No.4
Changes of nutrient material and natural supplies by sediment of irrigation water into 1.0ha of paddy field during the rice cultivation were investigated. TSS of the sediment contained irrigation water ranged 52.9∼125.6㎎/L and content of organic matter showed 1.89∼2.33%. Content of T-N, NH₄-N and NO₃-N were 623.5∼1775.2, 22.9∼75.8 and 10.2∼72.1㎎/㎏ respectively. Content of T-P and ortho-P were 186.7∼375.7 and 12.4∼38.9㎎/㎏ respectively. The content of exchangeable canons, Ca^(++), Mg^(++), Na^+ and K^+ were 435.3∼737.5, 127.3∼204.2, 36.6∼94.9 and 105.6∼232.9㎎/㎏ respectively. Total content of heavy metals were 13.4 of Pb, 0.6 of Cd, 8.2 of Ni, 12.1 of Cu, 29.8 of Zn and 19.7㎎/㎏ of Cr. During the period of rice cultivation, when supplied 4,250㎥ of an irrigation water into 1.0ha of paddy field, natural supplied 346.01㎏ of sediment, 7.11㎏ of organic matter, 0.50㎏ of T-N, 0.02㎏ of NH₄-N, 0.01㎏ of NO₃-N, 0.08㎏ of T-P and 0.01㎏ of Ortho-P. Also exchangeable Ca^(++), Mg^(++), Na^+ and K^+ were supplied 0.21, 0.06, 0.02 and 0.06㎏ respectively. Loaded of the total heavy metal showed natural background level.