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정상인에서 혈중 연과 zinc protoporphyrin 과의 상관관계 및 HPLC 와 Hematofluorometer 로 측정한 zinc protoporphyrin 량간의 비교
김강윤,김현욱 한국산업위생학회 1993 한국산업보건학회지 Vol.3 No.2
Blood samples obtained from 200 adults who had visited the $quot;S$quot; general hospital were analyzed to compare the zinc protoporphyrin (ZPP) levels quantified by high performance liquid chromatograph (HPLC) and by hematofluorometer (HF) to investigate the methodological difference if any and the relationship between the levels of blood lead and ZPP among no-lead exposed adults. Also investigated were the distribution of ZPP and protoporphyrin IX (PPIX) concentrations, the establishment of normal levels of blood ZPP and blood lead, and the contribution of age and sex factors to these values. These subjects had no previous occupational exposure to lead. The results obtained were as follows : 1. The mean values of blood lead for male and female subjects were 9.46±2.44 ㎍/㎗ and 8.09±2.17 ㎍/㎗, respectively. The difference observed in the mean concentrations between male and female subjects was statistically very significant. 2. The mean values of blood ZPP by HPLC for male and female subjects were 15.94 4.55 ㎍/㎗ and 22.26±6.61 ㎍/㎗, respectively. The difference observed in the mean concentrations between male and female subjects was statistically very significant. The mean values of blood PPIX by HPLC for male and female subjects were 2.51 1.78 ㎍/㎗ and 2.81±1.56 ㎍/㎗, respectively. The difference observed in the mean concentrations between male and female subjects was statistically not significant. 3. The mean values of blood ZPP by HF for male and female subjects were 28.44±7.11 ㎍/㎗ and 37.77±8.04 ㎍/㎗, respectively. The difference observed in the mean concentrations between male and female subjects was statistically very significant. 4. No statistically significant correlation was found between the levels of blood ZPP and blood lead. 5. The ratio of ZPP and protoporphyrin IX (PPIX) concentration to erythrocyte protoporphyrin (EP, EP=ZPP+PPIX) concentration was 87.4% and 12.6%, respectively. 6. A statistically very significant correlation was found between the ZPP concentrations determined by HPLG and the values by HF (r=0.7565). The ZPP concentrations quantified by HF were 1.75 times as high as the values obtained by HPLC. 7. The blood ZPP concentrations quantified by HPLC, HF, and spectrofluorometer (SF) from the blood samples obtained from 14 lead-exposed workers and from 16 no-lead exposed adults showed wide variations. The ZPP concentrations by HF were the highest followed by the levels obtained by SF and by HPLC. In the exposed group, no statistically significant difference was found among three methods of quantifying blood ZPP levels. In the no-lead exposed group, however, statistically significant difference was observed among these methods. The ZPP concentrations by HF were about twice as high as those of by HPLC or by SF. Among three methods of quantifying blood ZPP (HPLC, SF and HF), the results revealed significant difference. Therefore it is suggested that objective methods of quantifying blood ZPP and a system of correcting different ZPP levels be developed by the ministry of Labor.
공기중 석면 및 기타 섬유분진 분석에서의 분석자 개인 변이
김강윤,김은선,김석원,Kim, Gang-Yun,Kim, Eun-Seon,Kim, Seok-Won 대한산업보건협회 1999 산업보건 Vol.130 No.-
본 분석기법을 소개하고자 하는 목적은 유해인자별 작업환경 측정 및 특수건강진단 시료 분석에 맞는 구체적인 분석결과를 제시함으로써 산업보건관련 유관기관에 실질적인 도움을 주고자 함 입니다.
기체크로마토그래프를 이용한 요중 N-메틸포름아미드분석법
김강윤,이준승,최호춘,Kim, Gang-Yun,Lee, Jun-Seung,Choe, Ho-Chun 대한산업보건협회 1998 산업보건 Vol.119 No.-
본 분석기법을 소개하고자 하는 목적은 유해인자별 작업환경 측정 및 특수건강진단 시료 분석에 맞는구체적인 분석결과를 제시함으로써 산업보건관련 유관기관에 실질적인 도움을 주고자 함 입니다.
김강윤,안선희,최호춘,Kim, Gang-Yun,An, Seon-Hui,Choe, Ho-Chun 대한산업보건협회 1998 산업보건 Vol.118 No.-
본 분석기법을 소개하고자 하는 목적은 유해인자별 작업환경 측정 및 특수건강진단 시료 분석에 맞는구체적인 분석결과를 제시함으로써 산업보건관련 유관기관에 실질적인 도움을 주고자 함 입니다.
인조섬유의 NMAM #7400방법에 의한 측정 및 분석
김강윤,최호춘,Kim, Gang-Yun,Choe, Ho-Chun 대한산업보건협회 1998 산업보건 Vol.128 No.-
본 분석기법을 소개하고자 하는 목적은 유해인자별 작업환경 측정 및 특수건강진단 시료 분석에 맞는 구체적인 분석결과를 제시함으로써 산업보건관련 유관기관에 실질적인 도움을 주고자 함 입니다.
NH₄OH와 TMAOH를 촉매로 한 Fe ferrite 자성나노입자의 형성 및 특성조사
김강윤,김찬,이의완,이일수,장용민,손대락 한국물리학회 2002 새물리 Vol.44 No.1
Fe-ferrite nanoparticles were formed by using the co-precipitation method with NH$_4$OH and TMAOH as catalysts. The nanoparticles were found to have uniform sizes below 10 nm. The particles formed with TMAOH were found to be more uniform in size than those formed with NH$_4$OH, and they showed no coalescence. The magnetic properties of the nanoparticles were investigated using a vibrating sample magnetometer. No hysterisis was found in the M-H loop; thus, we could conclude that the nanoparticles formed in our experiment were superparamagnetic. NH$_{4}$OH와 TMAOH를 촉매로 하여 Fe ferrite 나노입자를 각각 형성하였다. 이렇게 형성된 나노입자들의 크기분포를 XRD와 TEM을 이용하여 관찰하였다. 나노입자들의 크기는 10nm이하로 관찰되었으며 TMAOH를 촉매로 한 경우가 NH$_{4}$OH를 촉매로 한 경우보다 입자의 크기도 균일하고 엉김현상도 적음이 관찰되었다. VSM을 사용하여 나노입자들의 자기적 성질을 관찰하였다. M-H loop에서 hysterisis가 거의 관찰되지 않았으며 따라서 나노입자들은 초상자성체의 특징을 보여 줌을 알 수 있었다.