Study on the biodegradation of perfluorooctanesulfonate (PFOS) and PFOS alternatives

다국어 초록 (Multilingual Abstract)

Objectives In this study, we investigated the biodegradation features of 4 perfluorooctanesulfonate(PFOS) alternatives developed at Changwon National University compared to those of PFOS.

Methods Biodegradation testing was performed with microorganisms cultured in the good laboratory practice laboratory of the Korea Environment Corporation for 28 days following the Organization for Economic Cooperation and Development guidelines for the testing of chemicals (Test No. 301 C).

Results While C8F17SO3Na, PFOS sodium salt was not degraded after 28 days, the 4 alternatives were biodegraded at the rates of 20.9% for C15F9H21S2O8Na2, 8.4% for C17F9H-25S2O8Na2, 22.6% for C23F18H28S2O8Na2, and 23.6% for C25F17H32O13S3Na3.

Conclusions C25F17H32S3O13Na3, C23F18H28S2O8Na2, and C15F9H21S2O8Na2 were superior to PFOS in terms of biodegradation rates and surface tension, and thus they were considered highly applicable as PFOS alternatives. Environmental toxicity, human toxicity, and economic feasibility of these compounds should be investigated prior to their commercialization.

참고문헌 (Reference)

1 서춘희, "한국인의 혈 중 PFOA와 PFOS 농도와 노출요인" 한국환경보건학회 38 (38): 105-117, 2012

2 Higgins CP, "Quantitative determination of perfluorochemicals in sediments and domestic sludge" 39 (39): 3946-3956, 2005

3 Vijaykumar BV, "Environmentally benign perfluorooctanesulfonate alternatives using a Zn/CuI mediated Michael-type addition in imidazolium ionic liquids" 16 (16): 2406-2410, 2014

4 Martin JW, "Collection of airborne fluorinated organics and analysis by gas chromatography/chemical ionization mass spectrometry" 74 (74): 584-590, 2002