Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Evaluation of Carcinogenic Metals in Particulate Using New ISO Standard Method

국제표준규격에 의한 입자상 물질 중 발암성 금속의 평가

  • Park, Ji Young (1Department of Environmental Health, School of Public Health, Seoul National University) ;
  • Yoon, Chung Sik (1Department of Environmental Health, School of Public Health, Seoul National University) ;
  • Ha, Kwon Chul (Department of biochemistry & health science, Changwon university)
  • Received : 2008.01.24
  • Accepted : 2008.04.16
  • Published : 2008.06.30
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Abstract

We quantified the human carcinogenic metals (chromium, nickel) in fumes from flux cored arc welding using stainless steel (FCAW/SS) wires. Zinc and calcium were also quantified because of their possibility of zinc chromate and calcium chromate, respectively. Welding was performed in an American Welding Society standard fume collection chamber. Insoluble and soluble forms of metals were analyzed by ISO 15202 method. Total chromium (insoluble+soluble) content and total nickel content were lower in FCAW/SS fumes (4.65%, 1.05%, respectively)than in stainless steel content (ca. 18%, 8%,respectively). Insoluble fraction in total chromium was 79.8 (range 64.5~95.1)% and 94.4(range 90.1~98.1)% in total nickel. Atomic emission spectroscopy used in this study does not differentiate the chromium valence status while ACGIH defines its carcinogenicity according to the valence status. From this study and previous study, we estimated the hexavalent chromium content in FCAW/SS was 0.2~1.1% and about 85% of them was soluble. The content of zinc and calcium, which can be existed as chromate forms, was low (0.02 %, 0.04% respectively) in FCAW/SS. Exposure assessment for zinc chromate and calcium chromate is possible because chromium in both compounds is used as a surrogate even though it is not well known that what compounds of zinc and calcium are formed in welding fume.

Keywords

Acknowledgement

Supported by : LG연암문화재단

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