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KMID : 0895420130230020164
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Journal of Korean Society of Occupational and Enviromental Hygiene
2013 Volume.23 No. 2 p.164 ~ p.168
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Lead Exposure Status of Smelt Process Workers in Steelmaking using Scrap Iron
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Gu Dong-Chul
Lee Jae-Hwan
Han A-Reum
Kim Hyun-Ju
Lee Su-Yeon
Yun Soon-Young
Lee Chae-Kwan
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Abstract
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Objectives: This study was aimed at the examination of the lead exposure status of smelting process workers in steelmaking using scrap iron. Methods: The study was conducted from July to September 2012 by means of measurements taken during the smelting process, with 45 minutes set for a one-time smelting work cycle when it comes to personal air sample and area air sample. As such, daily work hours were classified into 360 minutes for measurement. The analysis of lead concentration was conducted using AAs based on the NIOSH 7300 method.
Results: In the case of the personal specimens that were subjected to periodical measurement 45 minutes per one session during the smelting process, 40 out of 42 specimens measured were found to contain lead, with an average concentration level of 0.028mg/m3 (Max: 0.182 mg/m3, Min: 0.005 mg/m3, TWA-more than 50%: 4 out of 6 units). In the case of regional specimens, lead was detected in 45 out of 48 specimens measured, with an average concentration level of 0.037 mg/m3(Max: 0.220 mg/m3, Min: 0.007mg/m3). In the case of regional specimens subjected to measurement using a day as the work cycle, lead was detected in 15 out of 15specimens measured, with an average concentration level of 0.049 mg/m3 (Max: 0.478 mg/m3, Min: 0.005 mg/m3).
Conclusions: It concluded that smelting process workers in steelmaking are exposed to lead because scrap iron is used as a raw material. Itis thus necessary to introduce legal management to prevent occupation-related disease in smelting process workers in steelmaking.
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KEYWORD
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scrap iron, steelmaking, smelting, lead
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