Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Reduction of Hexavalent Chromium Collected on PVC Filters in Field Electroplating Process

현장 도금 공정에서 PVC 여과지에 채취된 6가 크롬의 환원

  • 신용철 (인제대학교 산업안전보건학과) ;
  • 백남원 (서울대학교 보건대학원) ;
  • 이광용 (한국산업안전공단 산업안전보건연구원) ;
  • 이병규 (한국산업안전공단 산업안전보건연구원) ;
  • 이지태 (국립환경연구원 화학물질안전관리센타)
  • Published : 2002.03.01
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Abstract

Recently, pilot studies showed an evidence of reduction of airborne hexavalent chromium, Cr(VI), on PVC filter during air sampling and storage. However, the information on this in the field was limited. Thus, we studied the reduction behaviors of airborne Cr(VI) on PVC filters during sampling and storage at three field electroplating operations. Regression between sampling time and the reduction (ratio of Cr(VI) to total Cr concentrations) was not statistically significant (p>0.05). However, the reductions in samples collected for 240 ～ 340 minutes were significantly higher than those for 30 - 60 minutes. On the other hand, another experiment showed a good correlation (r=0.96) between sampling time and the reduction without an exceptional value. Storage temperature was not a factor affecting the reduction of Cr(VI) collected on PVC filter. The loss of Cr(VI) samples stored in alkali solution (2% NaOH/3% Na$_2$CO$_3$) was significantly lower than that stored in vial according to NIOSH method (p<0.05). Thus, dipping Cr(VI) samples into alkali solution was a storage method to minimize tile reduction.

Keywords

References

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