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유인수,신현국,배성호 한국농화학회 1978 Applied Biological Chemistry (Appl Biol Chem) Vol.21 No.3
Wheat quality score index was proposed as a new criterion of wheat quality for evaluation of the laboratory testing value such as milling rate (Xm), flour ash content (Xa), flour protein content (Xp) ana sedimentation value (Xs). 1) Wheat quality score index was expressed as follows; Milling score index (MSI)=2.3X_m-72.4X_a Protein score index (PSI)=5.2X_p+0.9X_s Composite quality score index (QSI)=0.63X_(msi)+0.37X_(psi) 2) The samples with the more than 100 of MSI would be the good milliability, and the samples with more than 100 of PSI would be the good bread making properties, while that with less than 100 of PSI be good pastry type properties. Whereas most of the samples with higher value of QSI would be related to the good milliability and good bread making properties. 3) MSI, PSI and QSI were significantly correlated to the each related quality components.
유인수,김원일,정구복 한국환경농학회 2000 한국환경농학회지 Vol.19 No.4
광산인근 논토양의 형태별 중금속 함량[수용태(H₂O), 치환태 (0.5M KNO₃), 유기복합태(0.5M NaOH), 탄산염태(0.05M Na₂-EDTA), 황화잔류태(4M HNO₃)] 과 현미에 흡수 이행된 중금속과의 관계를 구명하기 위하여 5개 광산지역에서 30개 지점 논토양 및 현미를 대상으로 분석 검토한 결과는 다음과 같다. 광산인근 논토양의 Cd, Pb 및 Zn의 주된 형태는 EDTA 및 HNO₃ 침출태, Cu는 NaOH 및 HNO₃침출태였고, 식물에 흡수이행이 용이한 것으로 알려진 H₂O+KNO₃침출태의 함량비율은 Cd 25.1, Zn 8.7, Cu 4.0, Pb 0.4% 순으로 나타났다. 토양 pH와 H₂O+KNO₃침출태 중금속 함량비율은 고도의 부의 상관, EDTA+HNO₃침출태 중금속과는 고도의 정의 상관을 보였다. 토양의 총 중금속함량 수준에 따라 형태별 중금속함량의 분포비율은 다르게 나타났고, 특히 높은 함량수준에서 H₂O+KNO₃침출태 Cd, Cu, Pb 및 Zn의 분포비율이 높게 나타났다. 토양의 H₂O+KNO₃침출태 Cd, Cu, Pb 및 Zn함량비율은 토양 pH가 높은 지역(D site)에서 각각 1.06, 0.15, 0.008, 0.05%로 나타나 pH가 낮은 지역의 평균치 30.31, 4.06, 1.75, 10.10%보다 매우 낮게 나타났다. 현미중 Cd 및 Zn흡수이행과 관련이 큰 토양의 존재형태는 각각 KNO₃침출태, EDTA 및 HNO₃침출태로 나타났다. This study was conducted to compare fractionations and availability of heavy metal in paddy soils near five abandoned mining areas. The sequential extraction procedure was used to fractionate the heavy metals in soils into the designated from water soluble(H₂O), exchangeable(0.5M KNO₃), organically bound(0.5M NaOH), oxide/carbonate(0.05M Na₂-EDTA), and sulfide/residual(4M HNO₃). EDTA and HNO₃ extractable of Cd, Pb, and Zn, and NaOH and HNO₃, extractable of Cu were predominant chemical forms. The ratio of H₂O+KNO₃ extractable of Cd, Zn, Cu, and Pb were 25.1, 8.7, 4.0, and 0.4%, respectively. The ratio of H₂O+KNO₃ extractable heavy metal were negatively correlated with soil pH, while EDTA+HNO₃ extractable heavy metal were positively correlated. The most consistent distribution patterns were found when the soil samples were grouped according to their total contents. Specially, the ratio of H₂O+KNO₃ extractable heavy metal were higher as total contents of heavy metal were increased. The ratio of H₂O+KNO₃ extractable heavy metal(Cd 1.06, Cu 0.15, Pb 0.01, and Zn 0.05%) were lower at the high soil pH than those(Cd 31.31, Cu 4.06, Pb 1.75, and Zn 10.16%) at the low level. Compared to other chemical forms, the degree of contribution for KNO₃ extractable form to the Cd uptake to brown rice was high, whereas that for EDTA and HNO₃ extractable forms were high to the Zn.