• Title/Summary/Keyword: water soluble sulfur contents

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A Relationship Between AtmosPheric $SO_{2}$ Concentrations and Water Soluble Sulfur Contents in Gingko biloba in Seoul (서울 일부지역의 도로변 대기중 $SO_{2}$ 농도와 은행나무잎의 수용성 황함량과의 관계)

  • 박정숙;정문식;박석환
    • Journal of Environmental Health Sciences
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    • v.17 no.1
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    • pp.1-12
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    • 1991
  • The atmospheric SO$_{2}$ concentrations and water soluble sulfur contents in Ginkgo biloba were measured and analyzed in auto-measuring station, Kwangleung, and Yongmun from August 5 to October 21, 1990. The results of the study are as follows: 1. Atmospheric SO$_{2}$ concentrations between the seoul area(Pulkwang, Ssangmun, Myonmok, Oilurn) in which the concentrations exceeded the air quality standards and the surburb of seoul (Kwangleung, Yongmun) revealed the significant difference (p<0.01). 2. Water soluble sulfur contents in Ginkgo biloba in autumn were higher than those in Ginkgo biloba in summer (p<0.01). Water soluble sulfur contents in leaves showed a significant difference between seoul and its surburb(p<0.01). 3. Correlation between atmospheric SO$_{2}$ concentration and water soluble sulfur content of Ginkgo biloba in autumn was as follow Y=0.2714+9.8123 X, r=0.6362 (X: Airborne SO${_2}$ Concentration according to sampling location, Y: Water Soluble Sulfur Contents)

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A Study on the Effect of Air Pollutants in Daegu Area by Biological Indicator of Roadside (道路 指標生物을 이용한 대기오염이 植物에 미치는 영향에 관한 연구)

  • Kang, Hoe-Yang;Cha, Sang-Eun;Ha, Cheong-Gun
    • Journal of Environmental Health Sciences
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    • v.14 no.2
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    • pp.29-41
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    • 1988
  • This study was performed to investigate the air pollution levels in Daegu area titrough measuring of contents of water, chlorophyll, water soluble sulfur and lead metal in the leaves of roadside trees and chemical properties of soil under the urban trees. The results can be summarized as follows 1. The range of water content was from 60.4% to 74.6%. The comparisons of chlorophyll, water soluble sulfur and water content were regression equation, chlorophyll=0.1981+ 0.0040 water content (July), water soluble sulfur=3,139-0.0416 water content (July). and correlation coefficient, r=0.561 and r=0.549 respectively 2. Average contents of chlorophyll, water soluble sulfur and lead metal in the leaves of roadside tree at sampling sites were chlorophyll 0.050, 0.072mg/cm$^2$, water soluble sulfur 0.244, 0.333%, and lead metal 12.25, 12.68ppm in Oct. and Jul. respectively. 3. Correlation between chlorophyll and contents of water soluble sulfur and lead metal in the leaves of roadside tree at sampling sites were water soluble sulfur r=-0.564, -0.613 and lead metal r=-0.693, -0.699 in October and July, respectively. 4. Correlation between chlorophyll and water content, water soluble sulfur and lead metal in the leaves of tree showed positive significance.

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Influence on Compressive Strength and Drying Shrinkage of Concrete with Urea-Water Soluble Sulfur Admixture (요소-수용성 유황 혼화제가 콘크리트 압축강도 및 건조수축에 미치는 영향)

  • Park, Jae Kyu;Han, Sang Hoon;Hong, Ki Nam;Cho, Yong In;Chai, Yuzhe
    • Journal of the Korean Society of Safety
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    • v.31 no.5
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    • pp.74-81
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    • 2016
  • This paper presents an experimental study to ivestigate mechanical property of concretes according to addition of urea and urea-water soluble sulfur contents. Urea was added at 5~20% replacement by weight of water, and water soluble sulfur was used at 2%, 4% replacement by weight of cement. The setting times, the hydration heat, the compressive strength, and the drying shrinkage, were measured on concretes with single and binary admixtures. From the test result, it was confirmed that the hydration heat of urea-water soluble sulfur was lower than that of normal concrete by $10.1^{\circ}C$, and the drying shrinkage of urea-water soluble sulfur concrete was more excellent than normal concrete. In the case of urea of 5%, Compressive strength were improved with an increase of water soluble sulfur contents. The urea-water soluble sulfur used in this research can be used as improvement materials for drying shrinkage and compressive strength.

Effects of Air Pollution on Pinus thunbergii in Yocheon Industrial Comples (麗川工業 地의 大氣汚染이 곰솔에 미치는 影響)

  • 김태욱;이경재;김준선
    • Journal of Korean Society for Atmospheric Environment
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    • v.1 no.1
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    • pp.25-32
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    • 1985
  • To examine the effects of air pollution on Pinus thunbergii growing around Yocheon Industrial Complex, evaluation of visible injury based on Injury Index and chemical analysis of water-soluble sulfur and fluorine contents in needles were carried out on 30 sampling sites. Histological responses of needles were also investigated on the necrotic needle tissues. Not only Injury Index but water-soluble sulfur and fluorine contents were higher at all sites than those at control site, and showed significant correlationship among them. Especially, they were rather higher in the vicinity of air pollutants sources. Water-soluble sulfur contents were positively correlated with average atomospheric $SO_3$ concentrations. Microscopic examination of necrotic needle tissues showed that mesophyll cells were collapsed with hypertrophy and collapse of transfusion cells.

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Effects of Sulfur Dioxide on Bark Acidity, Leaf Acidity and Water Soluble Sulfur Contents of Prunus yedoensis and Ligustrum obtusifolium Seedlings (아황산가스가 왕벚나무와 쥐똥나무 유묘의 수피산도, 엽중산도 및 엽내 수용성 황 함량에 미치는 영향)

  • 주영특;이상덕;김홍률
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.4 no.4
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    • pp.219-223
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    • 2002
  • This study investigated effects of bark acidity, leaf acidity and water soluble sulfur contents by SO$_2$, 1-2 seedling of Prunus yedoensis and Ligustrum obtusifolium were treated 5 level (0. 0.5, 1, 2, 4 ppm) of SO$_2$. The tallowing results were obtained; In the case of bark and leaf acidities, pH values decreased as SO$_2$ concentration was high. Prunus yedoensis compare with Ligustrum obtusifolium had high relative susceptibility because rates of increase in bark and leaf acidities were high according to SO$_2$ concentration. Water soluble sulfur contents in the leaves also increased as SO$_2$ concentration was high. Prunus yedoensis compare with Ligustrum obtusifolium had high relative susceptibility because increase rates of water soluble sulfur contents in the leaves were high according to SO$_2$ concentration.

Effect of Air Pollution on Cherry Tree (Prunus yedoensis Matsumara) planted on National Roadsides between Cheonju and Kunsan City (I) -Water soluble sulfur, Lead and Cadmium Contents in the Leaves- (대기오염(大氣汚染)이 전주(全州)·군산간(群山間) 국도변(國道邊) 왕벚나무에 미치는 영향(影響) (I) -수용성(水溶性) 황(黃), Pb, Cd 함유량을 중심(中心)으로-)

  • Kim, Chang Ho;Hwang, Yu Chul;Yim, Kyong Bin
    • Journal of Korean Society of Forest Science
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    • v.81 no.2
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    • pp.117-123
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    • 1992
  • In this study, the water soluble sulfur, lead and cadmium contents of Prunus yedoerais leaves were analysed. The water soluble sulfur content considered as a main pollution indicator was extracted by the conventional barium sulfate method and the concentrations were calculated. The results obtained are as follows ; 1. The water soluble sulfur contents of the leaves collected from the heavy traffic roadside trees were two time higher than that of control materials on average. It was presumed those trees has been under meaningful pollutants impact. The water soluble sulfur contents of leaves between Cheonju and Iri was higher than that between Iri and Kunsan. 2. The range of Pb contents from roadside trees was 11.9-34.5 ppm for exceeding the control. The trees grown on the right roadside were more heavliy Pb-contaminated. 3. The range of Cd contents from roadside trees grown between Iri and Kunsan, the site-to-site variations of Cd concentration was not significant.

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A Study on the Leaf Acidity, Bark Acidity and Water Soluble Sulfur Contents of Pinus Koraiensis in Chuncheon and Cheongpyoung (강원대 학술림과 경춘가도(청평)변 잣나무 잎과 수피의 pH및 수용성 황함량에 관한 연구)

  • Lee Sang Deok;Kim Hong Ryul;Joo Yeoung Teuk
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.6 no.3
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    • pp.190-195
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    • 2004
  • This study investigated effects of water content in leaf, leaf acidity, bark acidity and water soluble sulfur contents by vehicle. The results were as follows: The average water content in Pinus Koraiensis leaves at Cheongpyoung and Chuncheon were 49% and 51 % respectively. The average leaf acidity and bark acidity at Cheongpyoung and Chuncheon were respectively pH 4.8 and pH 4.9 in leaf, pH 5.3 and 5.4 bark. The average water soluble sulfur content in leaves showed a significant difference between Cheongpyoung and Chuncheon of 0.133% and 0.053% respectively.

Contents of Sulfur, Fluorine, Wax and Chlorophyll in Needle Tissue and Needle Growth of Pinus thunbergii as Bioindicators of Air Pollution (대기오염(大氣汚染) 지역의 해송엽내(海松葉內) 수용성(水溶性) 황(黃), 불소(弗素), WAX, 엽록소(葉綠素) 함량(含量) 및 엽(葉) 생장(生長)의 변화와 생물지표성(生物指標性))

  • Kim, Joon Sun;Kim, Yong Hwan;Lee, Han Yol
    • Journal of Korean Society of Forest Science
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    • v.82 no.4
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    • pp.347-353
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    • 1993
  • Accumulation of air pollutants such as $SO_2$ and HF, chlorophyll contents, wax concentrations in needle tissue and needle growth of Pinus thunbergii were studied to verify possibilities of bioindicators of air pollution in Yochon Industrial Complex from July to October, 1991. The concentrations of water-soluble sulfur and fluorine increased nearer to the pollution sources regardless of sampling time, but water-soluble sulfur varied little during investigation and fluorine accumulated more with the passage of time. Total chlorophyll contents decreased a little in the slightly polluted site but sharply in the heavily polluted site. The higher the pollution level was, the more decreased chloroform-extractable wax. Air pollution exposure inhibited needle growth of Pinus tbunbergii during the latter part of growth period. Water soluble sulfur, fluorine and wax concentrations in needle of Pinus thunbergii were rather wood sensitive indicators of susceptibility to ambient air pollution from early July to early October. Chlorophyll contents seemed to be able to be used as a bioindicator of air pollution in early stage of needle development and in the severely polluted area. In the meanwhile needle length must be used as a bioindicator in latter part of growing season.

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The Effect of Sulfur Dioxide by Burn out on Enzyme Activity and Lipid Content in Rats (소환시 발생되는 아황산 가스가 흰쥐 혈청 중의 효소 활성도 및 지질 함량에 미치는 영향)

  • Kim, Hae-Dong;Kim, Byung-Hak;Ha, Hun;Cho, Soo-Yeul;Yoon, Soo-Hong
    • Environmental Analysis Health and Toxicology
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    • v.12 no.3_4
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    • pp.61-66
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    • 1997
  • Recently, incidences of pulmonary-related diseases are increasing and natural ecosystem is destroyed year by year owing to air pollutions by industrial noxious gases such as sulfur dioxide and carbon dioxide, etc. Sulfur dioxide produced by oxidation of sulfur compounds is water soluble and causes several kinds of pulmonary diseases, damaging on plants and animals. This study was undertaken to investigate effects of acute exposure of rats to sulfur dioxide using biochemical parameters. The sAST (aspartate transaminase) activity was not significantly affected but sALT (alanine transaminase), sLDH (lactate dehydrogenase) and sALP (alkaline phosphatase) activities were significantly increased by acute sulfur dioxide gas exposure. Also sulfur dioxide gas treatment significantly diminished serum cholinesterase activity. The total lipid, triglyceride, total-, HDL- and LDL-cholesterol contents were significantly increased by sulfur dioxide gas exposures. But the body and liver weight were generally diminished in comparison with control group. Our results' showed increased enzyme activities and lipid contents, but body and liver weight were all diminished by sulfur dioxide gas treatment.

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A Study on Adsorption of Heavy Metal Ions Using Water-soluble Chitosan Derivative (수용성 Chitosan 유도체를 이용한 중금속 이온 흡착에 관한 연구)

  • Lee, Kwang-Il;Kwak, Chun-Geun;Kim, Young-Ju;Jang, Buyng-Man;Kim, Sang-Ho;Lee, Ki-Chang
    • Journal of the Korean Applied Science and Technology
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    • v.13 no.2
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    • pp.85-92
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    • 1996
  • Chitosan itself has been prepared using chitin, one of the most abundant compounds in nature, as a starting material. We have synthesized the water-soluble chitosan derivative, N-dithiocarboxy chitosan sodium salt, through the reaction of water-soluble chitosan with carbon disulfide in the presence of alkali metal hydroxide. To elucidate this natural polymer capacity of adsorbing heavy metal ions, we have performed adsorption experiments using the water-soluble chitosan derivative various average molecular weight and of different percent contents of sulfur. The effect of pH, adsorption time and temperature on adsorption efficiency was also studied. The adsorbent derived from water-soluble chitosan of average molecular weight ranging $9,000{\sim}120,000$ was shown to have the highest capacity of adsorbing heavy metal ions. On the whole, adsorbing efficiency was increased as the reaction time goes longer and also increased as the reaction temperture goes higer in temperture range of $15^{\circ}C{\sim}45^{\circ}C$. The adsorption capacity at various pH, however, was appeared to vary depending on the heavy metal ions studied Judging from these finding, water-soluble N-dithiocarboxy chitosan sodium salt, a derivative of a biodegradable nature polymer, is believed to be a potential adsorbent for heavy metal ions since it not only is shown to lower the concentration of heavy metal ions to below the drainage quality standard, but also it would not cause acidification and hardening of soil which is one of the detrimental effects of synthetic macromolecular adsorbents present.