현장 도금 공정에서 PVC 여과지에 채취된 6가 크롬의 환원

• 영문명: Reduction of Hexavalent Chromium Collected on PVC Filters in Field Electroplating Process
• 발행기관: 한국환경보건학회
• 저자명: 신용철 백남원 이광용 이병규 이지태
• 간행물 정보: 『1. 한국환경보건학회지』제28권 제1호, 41~49쪽, 전체 9쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2002.03.30

영문 초록

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$_2$ 수식 이미지CO$_3$ 수식 이미지) 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.

키워드

airborne hexavalent chromium reduction of Cr VI PVC filter alkali solution