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함세영(Se Yeong Hamm),조명희(Myong Hee Cho),성익환(Ig Hwan Sung),김정숙(Jung Sook Kim),이병대(Byoung Dae Lee),조병욱(Byong Wook Cho),한석종(Suck Jong Han) 한국수처리학회 1999 한국수처리학회지 Vol.7 No.2
The purpose of this study is to examine hydrogeochemical characteristics of groundwater for granite in the northwestern area of Pusan city and the potential of groundwater pollution in this area. According to the Piper diagram, groundwater in the study area mostly belongs to Ca^(2+)-HCO₃^- and Na^+-HCO₃^- types. High concentration of Ca^(2+) and Na^+ in groundwater are ascribed to the dissolution of plagioclase. According to the factor analysis, three factors are determined. Factor 1 consists of EC, pH, Na^+, K^+, NH₄^+, Cl^-, SO₄^(2-), and NO₃^-. Factor 2 consists of SiO₂ and HCO₃^-. Factor 3 is composed of Mg^(2+) and SiO₂. Based on the hydrogeochemical modeling. groundwater in the study area is undersaturated with respect to amorphous silica, and is oversaturated with respect to quartz and chalcedony. Based on phase stability diagrams^(1-2)), groundwater in the both areas is mostly in equilibrium with kaolinite and becomes undersaturated with respect to feldspars, evolved from the gibbsite during water-rock interaction.
김정숙,함세영,한석종 부산대학교 환경문제연구소 1998 環境硏究報 Vol.16 No.-
The purpose of this study is to examine chemical characteristics of groundwater for granitic and andesitic rocks in the vicinity of Mt. Geumjung, Pusan city, to establish the possible hydrogeochemical model of groundwater, and to evaluate the potential of groundwater pollution. According to the Piper diagram, groundwater in the study area mostly belongs to Ca^2^+-HCO_3 and Na^+-HCO_3 types. High concentration of Ca^2^- and Na^+ in groundwater are ascribed to the dissolution of plagioclase. Statistical methods (correlation analysis and factor analysis) were introduced to make the interpretation of analyzed data. Factor 1, consisting of pH, EC, Na^+, K^+, NH_4^+, Cl^- SO_4^2 and NO_3^-, explains the: effects of water-rock interaction such as dissolution of plagioclase and mica, and the influence of anthropogenic sources (domestic and industrial wastes). Factor 2, consisting of SiO_2, Ca^2^+ and HCO_3^- explains the dissolution of Ca-plagioclase. A hydrogeochemical modeling code, PHREEQC identifies and quantifies water-mineral reaction in fissures of the bedrock. The result of the modeling indicates the dissolution of major elements and formation of the kaolinite mineral.
대구광역시 및 경상북도 초등학교 양호교사들의 구강보건 인식도 변화에 관한 비교 조사연구(1993 - 1998)
이진수,김정숙,송근배 대한구강보건학회 1998 大韓口腔保健學會誌 Vol.22 No.4
The purpose of the current survey was twofold. The primary purpose was to determine sources of information about oral health, knowledge and attitudes about dental disease and its prevention. A second purpose was to compare these data with our previous data, and the degree of oral health knowledge between urban and rural school nursing teachers. Information was obtained with a questionnaire sent to 173 randomly selected samples who were actively working as a nursing teachers at elementary school in Taegu and Kyungpook province. In alt, 153 usable forms were returned for an adjusted response rate of 88.4% (153/173). The questionnaire was consisted with 7 items and general characteristics. Data analysis were conducted using the SAS package, and t-test and chi-squared test were performed, The most frequently cited sources of information about oral health were newspapers and magazines(75.8%), followed by in-service training(64.7%). The most important reason for keeping a good oral hygiene was preventing dental caries, and next were preventing periodontal disease and fetid odor. Regular dental visit and sealant application were appointed as the most effective methods in both groups for preventing dental caries. The agreement for preventive effect of sealant and fluoride application was highly improved among rural nursing teachers in 1998 than 1993. The knowledge about fluoride and periodontal disease were generally inaccurate and incomplete in both groups, but knowledge levels of urban nursing teacher's were higher than those of rural's. Most nursing teachers actively agreed their roles for taking care of oral health of school children. The oral health knowledge and attitudes of elementary school nursing teachers can play a critical and important role in assuring that elementary school teachers, children and their parents have current, scientifically accurate oral health information and behaviors. The knowledge level of oral health about all items was much improved in 1998 than 1993, especially much in rural nursing teachers, but they had partly incomplete and inaccurate knowledge. It was recommended that the systemic oral health education and in service training for nursing teachers was needed and various of materials to educate school children should be developed.
불소함유 음용수 투여에 의한 백서 치아의 내산성 및 미세경도 변화
송근배,이예경,김정숙 대한구강보건학회 1998 大韓口腔保健學會誌 Vol.22 No.1
저농도 및 고농도 불화물의 전신적인 투여에 의한 법랑질의 내산성 및 표면미세경도 변화를 관찰하고 법랑질 내에 함유된 불소이온농도를 측정한 후 이들간의 관계를 알아보고자 하였다. 48마리의 실험용 백서를 4개군으로 나누어 제1군은 대조군으로 불소가 함유되지 않은 탈 이온증류수, 제2군은 1ppm, 제3군은 10ppm및 제4군은 100ppm의 불소가 함유된 음료수를 최종 6주간 각각 투여한 후 각군당 6 마리는 투여 3주 후에 나머지는 투여 6주 후에 회생시켜 상악 절치를 상아법랑질 경계부위에서 절단하고 2×2㎟의 시편을 만들어 unsaturated polyester에 포매하고 #1,200까지의 silicon carbide paper로 연마한 후 초기 미세경도를 Vickers microhardness tester로 측정한 다음 0.01㏖/ℓ lactic acid-sodium hydroxide buffer (pH 4.0)로 탈회시킨 후 다시 미세경도를 측정하였고, 최외층 법랑질 분말을 채취하여 산분해시킨 다음 이온전극법에 의하여 불소를 측정하였다. 이상의 실험을 통하여 얻어진 모든 자료들을 SPSS/PC+의 일원변량 분산분석법과 Duncan의 사후검정법을 시행하여 통계적인 유의성을 검정하였다. 이미 잘 알려진 바와 마찬가지로 불소가 투여되지 않은 대조군에 비해 투여되는 불소의 농도가 증가할수록 그리고 기간이 길어질수록 표면미세경도도 유의하게 증가되었다. 내산성 검사에서도 마찬가지로 대조군에 비해 불소투여군 모두가 유의하게 증가되었으나, 불소투여기간에 따라서는 통계적인 유의한 차이를 나타내지 않았다. 법랑질내에 함유된 불소량은 고농도 불소 투여군이 대조군에 비해 4-5배 높았으며 투여되는 불소 농도가 증가할수록 표층 법랑질내 불소 농도도 증가되었다.