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정구복 ( Goo Bok Jung ),김민경 ( Min Kyeong Kim ),이종식 ( Jong Sik Lee ),김원일 ( Won Il Kim ),김건엽 ( Gun Yeob Kim ),고병구 ( Byong Gu Ko ),강기경 ( Kee Kyung Kang ),권순익 ( Soon Ik Kwon ) 한국환경농학회 2011 한국환경농학회지 Vol.30 No.2
BACKGROUND: This experiment was conducted to investigate the distribution and burden characteristics of heavy metal in the rainwater sampled at Taean area, in the middle part of Korea, from April 2002 to October 2003. METHODS AND RESULTS: The relationship between concentration of heavy metal and other chemical properties in the rainwaters was also evaluated. Chemical properties in the rainwater were various differences with raining periods and years. It appeared that a weighted average pH values of rainwater was ranged from 5.0 to 5.1. Heavy metal concentrations in the rainwater were ranked as Pb>Zn>Cu>Ni>As>Cr>Cd. As compared with heavy metal concentrations of rainwater in 2002, Cu, Pb, and Zn were higher than other elements in 2003. There were positive correlation between major ionic components, such as NH4+, Ca2+, Mg2+, K+, Na+, SO42- and NO3-, and As, Cd, Zn, Cr, and Ni concentrations in rainwater. For heavy metal distribution of rainwater, the order of average enrichment factor was Cd>Pb>As>Cu>Zn>Ni>Cr, and these were relatively higher than the natural components such as Fe, Mg and Ca. The monthly enrichment factor were relatively high, from August to October at Taean. The monthly amount of heavy metal precipitation was high in the rainy season from July to August because of great influence of rainfall. CONCLUSION(s): The results of this study suggest that the heavy metals(Cd, Pb, As, Cu, and Zn) of rainwater is strongly influenced by anthropogenic sources rather than natural sources.
Cd 안정동위체를 이용한 토양과 식물계에서 Cd의 거동해석
윤순강(Sun-Gang Yun),정구복(Gu-Bok Jung),김원일(Won-Il Kim),이종식(Jong-Sik Lee),김민경(Min-Kyeong Kim),김진호(Jin-Ho Kim),신중두(Joong-Du Shin),이덕배(Deog-Bae Lee),김삼권(Sam-Cwan Kim) 한국토양비료학회 2008 한국토양비료학회지 Vol.41 No.3
본 연구는 모재가 상이한 산지토양과 폐광인근 지역에 광미사 중 Cd 안정동위체의 분포와 토양 중에서 Cd 안정동위체 간의 관계를 해석하고, Cd 안정동위체 별 식물흡수 정도를 조사하기 위하여 광미사를 처리하고 고추와 콩을 재배하면서 식물체 지상부와 뿌리 중에 Cd의 안정동위체 분포에 대하여 조사하였다. 모재가 상이한 3가지(화강암, 변성암, 퇴적암) 토양에서 Cd의 8개 안정동위체(Cd<SUP>106, 108, 110, 111, 112, 113, 114, 116</SUP>)들의 토양 중 존재비는 토양별 차이가 없었다. 그러나 토양 모재차이에 관계없이 토양 중 Cd의 안정동위체 간에 관계는 크게 4가지의 분포특성을 나타내었다. Cd<SUP>106</SUP>/Cd<SUP>111</SUP> 간에는 직선형관계, Cd<SUP>114</SUP>/Cd<SUP>108 </SUP>간에는 2차식관계, Cd<SUP>110</SUP>/Cd<SUP>106</SUP> 간에는 역2차식 관계, Cd<SUP>110</SUP> / Cd<SUP>113</SUP> 간에는 클러스터형 관계를 보였다. 콩과 고추 중에 Cd은 안정동위체 중 Cd<SUP>116</SUP>, Cd<SUP>114</SUP>, Cd<SUP>112</SUP>이 주를 이루었고 존재비로는 Cd<SUP>116</SUP>이 가장 많았다. 반면 콩과 고추의 뿌리에서는 Cd<SUP>116</SUP>의 존재비가 감소하고 다른 7종류의 Cd 안정동위체 존재비가 상대적으로 증가하는 경향을 보였다. This experiment was conducted to describe the distribution of stable isotope Cd in the mine tailing and uncultivated soils derived from different parent rocks (Igneous rock, Metamorphic rock, and Sedimentary rock) as well as the movement of Cd isotopes from soil to plants, soybean and pepper. The results showed that there was no significant difference in isotopic ratios in soil among the eight kinds of stable isotope of Cd. However the relationship among isotopic ratios of stable isotope of Cd in soils were classified to four types, linear type between Cd<SUP>106</SUP>/Cd<SUP>111</SUP> and Cd<SUP>108</SUP>/Cd<SUP>111</SUP>, quadratic type between Cd<SUP>114</SUP> / Cd<SUP>108</SUP> and Cd<SUP>111</SUP>/Cd<SUP>110</SUP>, reverse quadratic type between Cd<SUP>110</SUP>/Cd<SUP>106</SUP> and Cd<SUP>108</SUP> / Cd<SUP>116</SUP>, and cluster type between Cd<SUP>110</SUP>/Cd<SUP>113</SUP> and Cd<SUP>116</SUP>/Cd<SUP>113</SUP>. While the individual stable isotopes of Cd in root were remained except on the plot of pepper without mine tailing application. Cd<SUP>116</SUP>, Cd<SUP>114</SUP>, and Cd<SUP>112</SUP> played active roles among other stable isotopic Cds in bean and red pepper, and Cd<SUP>116</SUP> was ranked the highest abundance ratio. Contrary to crop itself, the abundance ratios of Cd116 in bean and read pepper roots were decreased, and the ones of other Cds were relatively increased.
입지조건이 다른 시설재배지에서 담수처리에 따른 양분 용탈량 평가
김민경(Min-Kyeong Kim),노기안(Kee-An Roh),고병구(Byong-Gu Ko),박성진(Seong-Jin Park),정구복(Goo-Bok Jung),이덕배(Deog-Bae Lee),김철수(Chul-Soo Kim) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.3
Greenhouse soil cultivated with excessive compost and chemical fertilizer has been an issue to deteriorate soil and water quality in the environment. The objective of this study was to evaluate the nutrient outflow by desalting method, flooding soil surface, after vegetable cropping in greenhouse soils. Field experiment from July to September 2008, was conducted to quantify greenhouse locations, i.e. alluvial plain and local valley. The changes of desalinization in both locations were higher as the amounts of irrigated and drained water were increased. Particularly, the ratio of desalinization in alluvial plain was much higher (66.7%) than the one in local valley (45.6%). However, NH₄-N contents of local valley soil during the flooding were higher than in those of alluvial plain. This was caused by high total nitrogen and organic matter in local valley soil than those in alluvial plain soil. With comparing to the input and output loads of T-N and T-P in greenhouses with local valley and alluvial plain soils, the output loads of nutrients were larger than the input loads of nutrients. This result showed that the flooding soil surface can be a good treatment to desalinize greenhouse soils. However, this conclusion remained that the flooding water containing high N and P concentrations might cause the secondary effect on the quality of streams and groundwater since excessive nutrient concentrations can be the main cause of eutrophication problem in aquatic environment.