토양의 유교인산정량(有效燐酸定量)을 위한 방사성동위원소이용에 관한 지견

조재무 한국농화학회 1960 Applied Biological Chemistry (Appl Biol Chem) Vol.1 No.1

노후답(老朽畓)에 관한 연구(1)

조재무 한국농화학회 1961 Applied Biological Chemistry (Appl Biol Chem) Vol.2 No.1

The formation of sulfide from sulfate has been discussed from the thermodynamic principles. No mechanism of the reaction has been presented. From the stoichiometric and Nernst equations for the conversion of sulfate into sulfide, it was concluded that the formation of sulfide from sulfate can take place more readily if pH of a medium is low. The difficulty of this conversion increases with increasing pH. As pH of a medium increases, the degree of dissociation of H₂S into S= increases and this, in turn, renders the chance of precipitation of sulfide as FeS easier. Higher the pH of a soil or medium, greater is the S= concentration. The concentration of ferrous ion required to remove dissolved sulfide in a medium by forming insoluble FeS decreases with increasing pH. From the theory it was pointed out that an application of lime and iron rich foreign substances to a soil may be effective in causing the removal of dissolved sulfide from solution.

말라치온 분제(分劑)의 분해에 대하여 한국산 탈크의 화학적 및 물리적 성질이 미치는 영향

조재무,이성환,강적채 한국농화학회 1961 Applied Biological Chemistry (Appl Biol Chem) Vol.2 No.1

The decomposition of malathion in dust for mulations prepared from four Korean tales as carriers during storage period has been studied. Amberlite CG-120, a cation exchange resin . which has higher cation exchange capacity than tales, was also used as a carrier in hope of finding out the effect of nagative charge upon the decomposition of malathion. Besides the original talc powders obtained directly from the mines, the hydrogen ion saturated forms were also used as carriers for comparisonal study. The saturated ions for the resin were hydrogen, sodium and magnesium. As the physical properties of the tales, colloid content, water adsorption capacity, PH, specific surface, phosphate fixing capacity and exchangeable canons were determined, and these properties were correlated with the amount of the decomposition. Following results were obtained from the experiment. 1. The malathion in the talc in dust was found to decompose around 10-15% ofthe total withina month. About 50% of the decom position that took place after a month was found to occur within a week. 2. The resin which has higher cation exchange capacity than the tales was highly effective in the decomposition of malathion compared with the tales. 3. In every case the saturation of the exchange complexes with hydrogen ion greatly accelerated the decomposition of malathion. 4. The most highly correlated physical properties with the decomposition were colloid content and specific surface of the tales. 5. The water adsorption and phosphate fixing capacities of the tales were found not to correlate with the amount of malathion decomposed. From the experimental results it was concluded that the active negative spots on the colloidal tales or the resin attract the electropositive phosphorus atom in a malathion molecule thereby inducing the decomposition easier. The presence of hydrogen ion nearby might cause a catalytic effect in the decomposition of malathion.

[지역축제_파주장단콩축제] 웰빙명품 구수한 장단콩 맛 좀 볼까?

조재무 한국자치학회 2011 월간 공공정책 Vol.73 No.-

그리고, 아침이 온다

조재무(사진),김경환 한국자치학회 2012 월간 주민자치 Vol.3 No.-

Transport Characteristics of Cd, Cu and Zn in a Sewage Sludge-Treated Calcareous Soil

이상모,조재무,Lee, Sang-Mo,Cho, Chai-Moo 한국토양비료학회 1999 한국토양비료학회지 Vol.32 No.4

하수오니 처리 석회질 토양에서의 Cd, Cu 및 Zn의 수송 특성을 조사하기 위하여 하수오니 무처리 토양, 하수오니 50과 100 ton $ha^{-1}$ 처리 토양 및 하수 오니를 대상으로 용출현상 (elution development)과 혼성치환 (miscible displacement) 기술을 이용하여 실험을 수행하였다. 하수오니 50과 100 ton $ha^{-1}$처리 토양의 Cd, Cu 및 Zn 의 용출곡선 (elution curve)과 출현곡선 (breakthrough curve)은 하수오니 무처리 토양의 Cd, Cu 및 Zn의 용출곡선 및 출현곡선과 거의 비슷하였다. Cd, Cu, 및 Zn 10 mg을 처리한 Cd, Cu 및 Zn의 용출곡선은 Cd, Cu 및 Zn을 처리하지 않았을 때의 용출곡선과는 거의 비슷하였으나, Cd, Cu 및 Zn의 50 mg을 처리한 용출곡선과는 크게 달랐다. Cd, Cu 및 Zn 혼합용액 500과 $1000mg\;L^{-1}$을 이용한 Cd, Cu 및 Zn의 출현곡선은 서로 비슷하였으나, Cd, Cu 및 Zn 혼합용액 $100mg\;L^{-1}$을 이용한 출현곡선과는 크게 달랐다. 실험에 사용한 석회질 토양에서 하수오니 50과 100 ton $ha^{-1}$ 처리량은 Cd, Cu 및 Zn의 수송특성에 큰 영향을 주지 못하였으며, Cd와 Zn의 수송특성은 서로 비슷하였으나 Cu의 수송특성은 Cd 과 Zn의 수송 특성과는 크게 달랐다. A controlled column study using elution development and miscible displacement was conducted to assess heavy metal transport characteristics in sludge-untreated soil ("Control"), soil treated with an equivalent of sludge 50 and 100 dry ton $ha^{-1}$ ("Soil-Sludge mixtures"), and sewage sludge ("Sludge"). The elution curves (ECs) and the breakthrough curves (BTCs) for Cd, Cu and Zn in sludge 50 and 100 dry ton $ha^{-1}$ treated soils are not different from the sludge-untreated soil, The ECs for Cd, Cu and Zn in soil column which received a pulse of 10 mg of each Cd, Cu and Zn were similar to those of Cd, Cu and Zn in soil column which had no Cd, Cu and Zn added, but were very different with the ECs for Cd, Cu and Zn in soil column which received a pulse of Cd, Cu and Zn containing 50 mg of each metal. On the other hand, the BTCs for Cd, Cu and Zn in soil columns that were eluted with 500 and $1000mg\;L^{-1}$ of mixed solution of Cd, Cu and Zn were similar to each other, but were distinctly different with the BTCs for Cd, Cu and Zn in soil column that was eluted with $100mg\;L^{-1}$ mixed solution of Cd, Cu and Zn. Sewage sludge applied at rates of 50 and 100 dry ton $ha^{-1}$ did not affect the transport characteristics of this calcareous soil. The apparent mobility for this sludge treated soil and sludge is: Cd >Zn>Cu. The transport characteristics of Cd and Zn are similar to each other, but are different from those of Cu.

폐암조직에서 중성자 방사화 분석법을 이용한 미량 원소 분석

임상무(Sang Moo Lim),조재일(Jae Il Zo),심영목(Young Mog Shim),정영주(Young Ju Chung),조승연(Seung Yeon Cho),정용삼(Yong Sam Chung) 대한핵의학회 1993 핵의학 분자영상 Vol.27 No.1

N/A Trace elements are important components in the biological system, as a structural material and metabolic controller. Neutron activation analysis (NAA) with high neutron flux and high energy resolution Ge (Li) detector coupled to multichannel analyzer (MCA) has been one of the most accurate method for the determination of ultra-trace level components, and is applicable to biological material. In human body, the NAA can be used for quantitation of trace elements in various organs and tissue with endocrinological and metabolic disease and industrial metal poisoning. In this study, Triga Mark III nuclear reactor in Korea Atomic Research Institute was used for quantitation of trace element in human lung cancer tissues by neutron activation analysis. In the squamous cell carcinoma tissues, Br, Hg, La, Sb, Sc, C1, Fe and I content were lower than normal lung tissues, and K, Rb and Se content were higher. In the adenocarcinoma tissues, Fe, Au, La, Sc and Zn content were lower than normal lung tissues, and Rb, Co and Se content were higher. Rb content was higher in the adenocarcinoma tissues than in the squamous cell carcinoma tissues. Fe and Na content were higher in the squamous cell carcinoma tissues than in the adenocarcinoma tissues.

EFFECTS OF PH ON CATION EXCHANGE CAPACITY OF ILLITE AND BENTONITE

Cho, Chai Moo 서울대학교 1959 서울대학교 論文集 Vol.9 No.-

微分方程式에서 얻은 吸着方程式은 電氣的 中和條件을 넣은 Langmuir의 恒溫吸着式이나 世稱 말하는 Donnan 關係式과 同一한 것이다. 이리하여 얻은 吸着方程式을 利用하여 Illite와 Bentonite의 陽이온 交換能力을 測定하였다. 實驗結果 上記 膠質의 陽이온 交換能力이 水素와 칼슘이온의 存在下에서 顯著히 減少함을 發見하였다. Illite의 경우에는 加里이온이 陽이온 交換能力에 아무런 영향을 안 주는 것 같음이 알려졌다. 水素이온 濃度의 變化에 依한 陽이온 交換能力이 變化程度도 역시 硏究하였다. Illite의 경우에 少量의 鹽酸을 加하니까 危激한 陽이온의 低下가 나타나나 多量 더 加하더라도 아무런 影響이 더 없었다. 이와는 달리 Bentonite의 경우에는 鹽酸을 加할수록 陽이온 交換能力이 점점 더 減少하였다. 칼슘이온이 膠質에 吸着되는 親和度는 兩膠質에 있어서, 硏究한 이온의 어느것보다 더 强하였다. Illite에 있어서는 加里이온의 親和度가 水素이온의 그것보다 强하였으나 Bentonite에 있어서는 水素이온의 親和度가 加里의 그것보다 强하였다. The equations obtained from Poisson-Boltzmann differential equation are similar to the adsorption isotherm of Langmuir type if electroneutrality condition is introduced in the Langmuir equation and to the so-called Donnan relationship. The equations obtained were used to determine the cation exchange capacity of illite and bentonite. It was found that the cation exchange capacity of the clays decreased markedly due to presence of hydrogen and calcium ions. In the case of illite, it seems that the potassium ion does not affect the cation exchange capacity. Variation in the cation exchange capacity with the variation in the degree of hydrogen ion saturation was also studied. It was found in the case of illite, that the cation exchange capacity of the clay decreased greatly with small addition of hydrochloric acid and further addition did not materially decrease the cation exchange capacity. On the other hand, in the case of bentonite, the cation exchange capacity continually decreased with the addition of the acid. The affinity of calcium ion to the clays was greatest among the ions studied for both clays. In the case of illite, the affinity of potassium ion to the clay was greater than that of hydrogen ion. On the other hand, the affinity of the hydrogen ion was greater than that of potassium ion for bentonite. Poisson-Boltzmann

특강 , 토양생성 , 분류 , 물리 : 1가 - 양이온과 3가 - 양이온의 이온교환이 수반된 1차원 수직 이온이동 - 이론적 수리 모형 -

노희명,조재무,류순호 한국토양비료학회 1994 한국토양비료학회 학술발표회 Vol.1994 No.52

[특별대담] 박겸수 서울시 강북구청장 : “주민이 주인이 되는 주민 중심의 행정 실현할 터”

전상직,조재무(사진) 한국자치학회 2012 월간 공공정책 Vol.75 No.-