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NTIS 바로가기韓國環境衛生學會誌 = Korean journal of environmental health society, v.13 no.1, 1987년, pp.59 - 62
Lee, Sang-Bong (Department of Preventire Medicine, College of Medine, Gyeong Sang National University) , Choi, Moo-Ryong (Department of Preventire Medicine, College of Medine, Gyeong Sang National University)
This study was carried out to determine the content of heavy metals in chalks. Samples were collected from 5 manufacturing companies of chalk. The content of lead and cadmium were analyzed by flame atomic absorption spectrophotometer. The results obtained were as follows: 1. The average content of l...
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