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KMID : 0382420030290020069
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Korean Journal of Environmental Health Society
2003 Volume.29 No. 2 p.69 ~ p.76
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Comparison of Sampling Filters for Airborne Hexavalent Chromium in Plating Operation
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Lee Byung-Kyu
Shin Yong-Chul
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Abstract
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Hexavalent chromium may reduce on polyvinyl chloride (PVC) tilter during sampling and storage of samples. Recently. new or modified tilters for preventing Cr(VI) from the reduction has been introduced. Thus. this study was performed to compare the reduction behaviors of Cr(VI) on several sampling filters and to find the most appropriate fil ter for airbornc Cr(VI) sampling in plating operation. The results were as follows. I. There were statistically significant differences among PVC. polytetrafluoroethylene (PTFE). glass liber (GF) and polyvinylidene fluoride (PVDF) filters in recovery rates of spiked Cr(VI) samples by storage time(p<0.05). There was no significant difference between PVC and PTFE tilters(p>O.05). The PVC and PTFE filters showed higher recoveries than GF and PVDF filters(p<0.05). 2. The quartz fiber(QF) tilter treated with an alkali solution(2% NaOH/3% Na₂CO₃. 1% NaOH) showed a significantly higher recovery of Cr(VI) by storage time than other filters(GF and QF filter)(p<0.05). There was no difference in recovery of Cr(VI) between alkali-treated and untreated GF tilters(p>0.05). But the QF filters treated with two alkali solution showed a significantly higher recovery than the untreated QF tilter(p<0.05). There was no significant difference in recovery of Cr(VI) between QF filters treated with 1% NaOH and 2% NaOH/3% Na₂CO₃(p>0.05). In conclusion. treatment of QF filters with alkali solution was most effective in protecting from the reduction of Cr(VI).
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