PFOS salts 및 PFOS 대체물질에 대한 미생물분해시험

• 영문명: Biodegradation test of the alternatives of perfluorooctanesulfonate (PFOS) and PFOS salts
• 발행기관: 한국환경보건학회
• 저자명: 최봉인(Bong-In Choi) 나숙현(Suk-Hyun Na) 손준효(Jun-hyo Son) 신동수(Dong-Soo Shin) 유병택(Byung-taek Ryu) 정선용(Seon-yong Chung)
• 간행물 정보: 『1. 한국환경보건학회지』제42권 제2호, 112~117쪽, 전체 6쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2016.04.30

영문 초록

Objectives: In this study, we investigated the biodegradation rates of 8 perfluorooctanesulfonate (PFOS) alternatives synthesized at the at Changwon National University in comparison to those of PFOS potassium salt and PFOS sodium salt. Methods: A biodegradability test was performed for 28 days with microorganisms cultured in the good laboratory practice laboratory at the Korea Environment Corporation following the OECD Guidelines for the testing of chemicals, Test No. 301 C Results: While C 5 H 8 F 3 SO 3 K, C 8 F 17 SO 3 K and C 8 F 17 SO 3 Na were not degraded after 28 days, the 3 alternatives were biodegraded at the rates of 31.4% for C 8 H 8 F 9 SO 3 K, 25.6% for C 10 H 8 F 13 SO 3 K, 23.6% for C 25 F 17 H 32 S 3 O 13 Na 3 , 20.9% for C 15 F 9 H 21 S 2 O 8 Na 2, 15.5% for C 23 F 18 H 28 S 2 O 8 Na 2, 8.5% for C 17 F 9 H 25 S 2 O 8 Na 2 and 4.8% for C 6 H 8 F 5 SO 3 K. When the concentration was the same(500 mg/L), C 23 F 18 H 28 S 2 O 8 Na 2 had the lowest tension with 20.94 mN/m, which was followed by C 15 F 9 H 21 S 2 O 8 Na 2 (23.36 mN/m), C 17 F 9 H 25 S 2 O 8 Na 2 (27.31 mN/m), C 25 F 17 H 32 S 3 O 13 Na 3 (28.17 mN/m), C 10 H 8 F 13 SO 3 K (29.77 mN/m) and C 8 H 8 F 9 SO 3 K (33.89 mN/m). Having higher surface tension of 57.64 mN/m and 67.57 mN/m, respectively, than those of the two types of PFOS salts, C 6 H 8 F 5 SO 3 K and C 5 H 8 F 3 SO 3 K were found valueless as substitute for PFOS. Conclusion: The biodegradation test suggest that 6 compounds could be used as substitutes for PFOS. C 23 F 18 H 28 S 2 O 8 Na 2 and C 15 F 9 H 21 S 2 O 8 Na 2 were found to be the best substitutes based on biodegradation rate and surface tension, followed by C 25 F 17 H 32 S 3 O 13 Na 3 , C 8 H 8 F 9 SO 3 K and C 10 H 8 F 13 SO 3 K. C 17 F 9 H 25 S 2 O 8 Na 2 was found to have relatively low value as an alternative but it still had a potential to substitute the conventional PFOS.

목차

I. Introduction

II. Materials and Methods

III. Results

IV. Discussion

V. Conclusions

키워드

Alternatives Persistent organic pollutants PFOS