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RISS 인기검색어
- 검색키워드
- 저자 : 李萬正 (검색결과 37 건)
- 무료
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李萬正 대구효성가톨릭대학교 1981 연구논문집 Vol.23 No.3
This study was conducted to investigate levels of mercury concentration in various marine products in Korea's six bay areas, and was determined total mercury content by means of dithizonate combustion-atomic absorption spectrophotometric method. The materials used in this experiment were 8~16 species of marine products which were selected in Youngill, Ulsan, Pusan, Jinhae, Chungmu and Samchunpo bay area, respectively. The results obtained were summarized as follows; 1. Appearance of each marine products was not appeared transformation of backbone and malformation y mercury contamination. 2. mean value of mercury content of various marine products in each sea are was relatively high in order of Youngill(0.109ppm), Chungmu(0.099ppm). Samchunpo(0.086ppm), Jinhae and Ulsan(0.068ppm), and among them lowest content was Pusan bay area by 0.045ppm. 3. In Youngill bay area, red crab(0.283ppm), globe fish(0.236ppm), flog flounder(0.150ppm), and file fish(0.152ppm) were showed higher contamination degree of mercury than others, and file fish(0.152ppm) in Ulsan, goby(0.121ppm), gizzard shad(0.119ppm), and flog flounder(0.186ppm) in Jinhae, red crab(0.286ppm), llobster(0.280ppm), sea arrow (0.257ppm) cray fish(0.157ppm), and hair tail(0.291ppm) in Chungmu, lobster(0.153ppm), flat fish(0.114ppm), and hard clam(0.163ppm) in Samchunpo bay area were showed higher contamination degree of mercury than others.
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李萬正 대구 효성가톨릭대학교 1969 연구논문집 Vol.5 No.1
下水道 沈泥의 理化學的 分析을 通해 다음과 같은 結論을 얻었다. 1. 採取場所에 따라 多少의 差이는 있으나 大體로 中性에 가깝고 炭素率이 比較的으로 낮았다. 2. 밭土壤에 비해서 ??基含量이 많고 Cation置煥容量이 크고 따라서 ??基飽度가 높았다.
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李萬正 대구효성카톨릭대학 1971 연구논문집 Vol.8 No.1
1968年부터 1970年까지 3個年에 걸쳐서 慶北道內의 감 名産地의 하나인 慶山郡 및 淸道郡內 10個處의 감果樹園을 對象으로 土壤, 葉 및 細根을 각각 分析하는 한편, 栽培環境條件을 아울러 살펴서 감나무의 榮養珍斷을 위한 實驗結果는 다음과 같다. 1) 土壤은 一般으로 細砂가 많고 粘土가 적으며, pH(H₂O)는 4.1~6.9, 平均 5.7로서 弱酸性이였다. 2) 炭素含量(0.38~2.08%)과 窒素含量(0.038~0.221%) 모두 적고, 炭素率은 約 10前後였다. Toruog 燐酸은 적은 便이나 有效態加里는 正常이었다. 3) 置換性??基, C.E.C. 모두 적은 편이나, ??基飽和度는 높았고 置換性??基는 Ca>Mg>K>Na의 차례로 減少되었다. 4) 水溶性망간, 置換性망간 및 易還元性망간 含量은 pH6 以上의 土壤에서 현저히 減少되었다. 5) 水溶性동含量은 0.2~15.5ppm, 平均 2.1ppm이고, 水溶性붕소는 0.17~0.70ppm, 平均 0.33ppm이였다. 6) 葉 및 根의 分析結果는 다음 表와 같다. -표 Leaf Root Range Average Range Average N 0.72~3.61% 2.64% 0.31~1.70% 0.99% P 0.015~0.184% 0.136% 0.080~0.163% 0.117% K 0.91~2.65% 1.79% 0.26~2.08% 0.94% Ca 0.51~1.82% 1.20% 0.33~1.07% 0.53% Mg 0.33~0.98% 0.53% 0.15~4.21% 0.62% Mn 211~482ppm 306ppm 0.017~0.048% 0.032% Fe 244~658ppm 378ppm 0.193~0.502% 0.328% Fe/Mn 0.57~2.33 1.28 - - Al 13.21~30.06ppm 19.66ppm 0.30~0.78% 0.51% B 14.2~36.7ppm 26.6ppm 20.1~49.5ppm 34.6ppm 7) 窒素·燐·칼륨·칼슘 및 마그네슘은 잎에서, 나트륨·망간·철·알루미늄과 硼素는 뿌리에 많이 含有되었다. 8) 土壤·燐 및 根成分含量 사이에는 明確한 相關을 찾아볼 수 없었다. This research is to diagnose the nutritional status of persimmon orchards in Kyungsang-bukdo province, Korea. Ten typical orchards were selected throughtout the province, and sample of soil, leaf and root taken from those orchards from 1968 to 1970 were analysed. \ Tree ages,annual yields and the amount of fertilizers applied to the orchards were carefully investigated before the laboratory work to know if there is any relation between the contents of soil(such as nitrogen, phosphorus, potassium, magnesium and other minor nutrient elements) and those of leaf and root. The average values of nutrient elements were also calculated for the diagnosis. The results obtained were summarized as follows: 1) In general soils were composed of sand and it was shown weak acitity, pH(H₂O) were about from 4.1 to 6.9, and average 5.7. 2) Carbon and nitrogen contents were low, and carbon ratio was about 10. Toruog-P₂O5 were low, but 1/5N-HCI soluble K₂O were normal. 3) Exchangeable cation quantity and cation exchange capacity were low, but percentage of base saturation was high. And exchangeable cation quantity were low, but percentate of base saturation was high. And exchangeable cation quantity were Ca>Mg>K>Na. 4) Water soluble, exchangeable and easily reducible managaness were highly decreased in the soils which were more than pH 6. 5) Water soluble copper contents in the soils were 0.2~15.5ppm, average 2.1 ppm, and water soluble boron were 0.17~0.70ppm, average 0.33ppm. 6) Leaf and root composition was as follows.(on dry weight basis) -표 Leaf Root Range Average Range Average N 0.72~3.61% 2.64% 0.31~1.70% 0.99% P 0.015~0.184% 0.136% 0.080~0.163% 0.117% K 0.91~2.65% 1.79% 0.26~2.08% 0.94% Ca 0.51~1.82% 1.20% 0.33~1.07% 0.53% Mg 0.33~0.98% 0.53% 0.15~4.21% 0.62% Mn 211~482ppm 306ppm 0.017~0.048% 0.032% Fe 244~658ppm 378ppm 0.193~0.502% 0.328% Fe/Mn 0.57~2.33 1.28 - - Al 13.21~30.06ppm 19.66ppm 0.30~0.78% 0.51% B 14.2~36.7ppm 26.6ppm 20.1~49.5ppm 34.6ppm 7) There were more nitrogen, phosphorus, potassium, calcium and magnesiun in the leaf, and more sodium, managness, iron, aluminium and boron in the root. 8) No clear relationship was found between the contents of soil and those of leaf and root.
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李萬精 대구효성 가톨릭 대학교 1975 연구논문집 Vol.16 No.1
The mineralogical studies of the dleven soil samples derives from granite, granodiorite, diorite, arkose sandstone and tetiary shle, taken from apple orchards in the province of Kyungsangbukdo, Korea are made to investigate the relationships among the physical and chemical characteristics, mineral weathering, soil forming processes and mineralogical composition. The fine sand frction (less than 0.2mm) and the clay fractoion (less than 2 micron) are dispersed with the shker after hydrogen prozide treatment for the removal of organic matter, and separated from each suspension by gravity sedimentation. The fine sand are overved by mineral micorscope and the clay are ovseved by Z-ray diffraction patterns. differential thermal analysis curves and infrared spectrum The ooutline of the results are as follows. 1. Soils are mostly sandy and show pH 4.35 to 6.75, total exchangeable bases of surface soils are comparably low (4.35 to 6.75, total ecshcangeable bases of surface soils are comparably low (4.89 to 17.81 me/100g Ca>Mg>K>Na). Cation exchange capacity ranged from 7.74 to 21.72me/100g and base saturation percentage from 22.52 to 94.62%. 2. The primary minerals, i.e., quartz, altered-feldspar, plagioclase, and alkali-feldspea are donmant in almost all samples, and some smples contain an apprecialbel amount of hornblende, biotite, muscovite and plant opal. There are also those samples which contain very small quntity of pyroxene group, tourmaline, epidote, cyanite, magnetite, volcanic glass and zircon. 3. The mineralogical composition of the soil shows some characteristics of its parent materials. The first group is derived from weathering products of diorite, the second group is from granit or grandodiorite, and the fifth group is mainly from arkose sandstone. It is suspected that the third group is derived from weathering products of granite mixed with the arkose sandstone mexed with the granite. 4. All samples contain expanding or nonexpanding 14A micnerals, illite and kaolin minerals, and some samples contain chlorite, cristobalite, gibbsite, and thos primary minerals as quartz and feldspar, but the quantities vary according to the parent matrials. 5. Nonexpanding 14A minerals seems to be dioctahedral vermiculite ehich snawiches gibbsite layer or chlorite in between layer lattices. 6. As for clay minerals, montmorillonite was principal component in the samples derived from weathering products of arkose sandstone and tertiary. Minerals which are derived from weathering products of arkose have kaolin minerals and vermiculite as their principal component, and minerals derived from weathering products of acidic rock group are generally classified into two groups, the kaolin mineral group, and the kaolin minerals and vermiculite group.
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李萬正 대구효성가톨릭대학교 1973 연구논문집 Vol.12 No.1
This article reports the results of the analyses of mung beans and their sprouts in respect of the quantities of total lipid and composed fatty acid. The analyses were made by gas chromatography. Two kind of mung beans are selected for analyses. One is the mung bean cultivated in Korea, and the other in china. The following is the summRY OF THE RESULTS. 1) The korean mung bean and is sprout contain more total lipid than the Chinese mung bean and its sprout. 2) All four samples have the same composed fatty acids, that is, Linoleic, Pelmitic, Linolenic, Oleic, and Stearic acid. The proportion of quantities of those five acids in Korean mung bean and its sprout is in the order of Linoleic>Palmitic>Linolenic>Oleic> Stearic, and that of Chinese mung bean and its sprout is in the order of Linolenic>Palmitic>Oleic>Linoleic>Stearic.
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李萬正 대구효성가톨릭대학교 1987 연구논문집 Vol.35 No.1
Formation of alkylmercury compounds by addition mercuric chloride, methylcobalamin, or sun light irradiation in plant food stuffs was examined. 1. The component of plant foods itself, is not enouth for alkylation of the additional inorganic mercury. 2. After the plant foods had been incubated wiht inorganic mercury anc methylcobalamin, we obtained a methyl mercury compound. But the quantity of the yield was little and the reaction time was prolonged. 3. After sunlight irradiation of inorganic mercury in the presence of aceticacid and plant foods had been done, we obtained a methyl mercury compound. But the quantity of the yield was also little. These studies suggest that the plant foods may inhibit or delay the alkylation of inorganic mercury.
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李萬正 대구효성가톨릭대학교 1970 연구논문집 Vol.6 No.1
The siols of persimmon orchards in the province of Kyungsangbukdo in Korea, were analyzed. Fine sand and clay were observed with mineral microscope, and by means of X-ray diffraction. The results obtained were as follows: 1) The principal primary minerals were plagioclase, quartz and alkali feldspar. Volcanic glass, hornblende, biotite, muscovite, plant opal, magnetite and epidote(?) were also pbserved. 2) In clay minerals, montmorillonite, vermiculite, illite and kaolin minerals which is derived from weathering products of metamorphic rock was observed mainly and minerals which are derived from weathering products of acidic rock were divided generally into two kinds, that is, kaolin minerals, montmorillonite and vermculite, and kaolin minerals and illite.
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