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李匡默,白南園 최신의학사 1969 最新醫學 Vol.12 No.2
A study on lead concentration in air of industrial establishments in Korea. Kwang Mook Lee, Nam Won Palk (Dept. of Preventive Medicine, Catholic Medical College) <Profewor Kyu Sang Cho) Lead is a substance among the earliest metals used by men. It, having low melting point, can be refined easily and it is so soft that it can be easily rolled into sheet and foil and extruded cold rods, pipes and tube containers. Alloyed with tin, antimony and other metals, lead proved the most satisfactory substance for using in industry. The importance of lead and its compounds in industry, taken in relation to its physiological effects, is such that the degree of industrial exposure is of great hygienic significance. By our previous report, it was assumed that six percent of the industrial workers as a whole were exposed to lead fume and dust in their work places in Korea. In this survey, we measured lead concentration in air of work places sampled from eight different industries: storage battery manufacturing, printing, earthenware manufacturing, lead refining, electrical machinery, automobile manufacturing, petroleum refining and lead mining industry. The resultsare as follows: 1) The average concentrations of lead in air of lead refining industry show 0.64C.81 mg/m3, 0.31~0.66mg/m3 in storage battery industry, 0.21mg/m3 in cable covering process in electrical machinery industry. The concentrations are higher than the threshold limit value. Those of automobile manufacturing, printing and earthenware manufacturing industries are below the threshold limit value. 2) In petroleum refining industry where organic lead is used, the concentration of lead in air at the process to add tetraethyl lead to petroleum shows 0.065mg/m3. But there is a risk that cause lead poisoning in that process though the concentration is below the threshold limit value, for the organic lead can be absorbed through the intact skin. 3) None of the satisfactory control measures to prevent lead exposure has been found, such as local ventilation, automation, and protection of workers with personal protective devices, even in the industries which show higher concentration of lead in their work places. It seems that the ignorance of both employers and employees concerning the health hazards of lead workers and their control measures causes the defenceless against the lead exposure.
李匡默 가톨릭대학산업의학센타 산업의학연구소 1972 韓國의 産業醫學 Vol.11 No.2
요즘 소형엔진의 개발에 따라 여러가지 공구가 쓰이게 되면서 진동에 의한 질병이 차츰 늘어날 것이 예상되어 진다. 산업장의 유해인자로서 진동은 오래전부터 알려져 왔지만 진동을 평가하는 방법은 다른 유해물평가방법에 비하여 뒤떨어져 있는 감이 든다. 현재로서는 국제적으로 통일된 측정기기가 없다고 생각된다. 여기에 소개하려는 평가방법은 일본의 노동성노동위생연구소에서 일하고 있는 三輪俊輔씨들의 연구team이 제안하고 있는 것으로서 많은 흥미꺼리를 갖고 있다고 생각되어 소개하는 바이다.