Long term monitoring for PCB in ambient air using low volume air sampler

1. Long term monitoring for PCB in ambient air using low volume air sampler Hyogo Prefectural Institute of Public Health and Environmental Sciences: Masahiro Tsurukawa, Chisato Matsumura, Takeshi Nakano 12000 PCB (t) 10000 8000 6000 4000 2000 0 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 year 1000 1000 Ambient air Ambient air PCB level ( ng /m ) 3 100 100 10 10 1 1 0.1 0.1 0.01 0.01 1970 1970 1975 1975 1980 1980 1985 1985 1990 1990 1995 1995 2000 2000 2005 2005 Background & Objectives • Chemicals that caused “Kanemi-yusho” • Designated as POPs(PersistentOrganic Pollutants) • Resident to degradation，Long transfer，High acuumulation in the ecosystem，Toxity • Influences on the humans and the ecosystem has been concerned PCBs (Polychlorinated Biphenyls) We need to monitor the PCB concentration carefully because PCB productions are stored in many dispersed places. Monitoring was carried out from 2000 to 2005 in Hyogo prefecture inJapan.Regarding the sampling location and period, sampling was carried out in urban, industrial, rural area and collected continuously for about one month. PCB usage(t) Daily variation of Dioxin Concentration（compared with Hi volume air sampler and Low volume air sampler) Low volume air sampling method is effective for long term monitoring. Research method ○Monitoring was conducted at three points at Nishiwaki (rural area),Takasago(industrial area), Suma in Kobe (urban area) . ○PCB concentrations in each sample were determined with high resolution GC/MS (JEOL: JMS700). GC/MS analysis : The analysis was carried out using a HP 6890 gas chromatograph connected to a JMS-800D mass spectrometer (JEOL Ltd. Japan) operating at a resolution >10 000. Co-PCB, Co-PXB and PXDF were analyzed usingHT8-PCB column. Temperature program used for congener specific separation of the PCB, PXB and PXDF on HT8-PCB column: 120C, 20C/min. to 180C, 2C/min. to 260C. 5C/min. to 300C, 5 min. isothermal. Monitoring ions for GC/MS analysis are listed in Table. StandaGC/MS analysis : The analysis was carried out using a HP 6890 gas chromatograph connected to a JMS-800D mass spectrometer (JEOL Ltd. Japan) operating at a resolution >10 000. Co-PCB, Co-PXB and PXDF were analyzed usingHT8-PCB column. Temperature program used for congener specific separation of the PCB, PXB and PXDF on HT8-PCB column: 120C, 20C/min. to 180C, 2C/min. to 260C. 5C/min. to 300C, 5 min. isothermal. Monitoring ions for GC/MS analysis are listed in Table. Standards: Commercially-available native/labeled standards were obtained from CIL as authentic standard/mixtures for crosschecking the assignment. , 4’-bromo- 3, 3’, 4, 5-tetrachloro biphenyl was obtained from CIL for a PXB standard. GC/MS analysis : The analysis was carried out using a HP 6890 gas chromatograph connected to a JMS-800D mass spectrometer (JEOL Ltd. Japan) operating at a resolution >10 000. Co-PCB, Co-PXB and PXDF were analyzed usingHT8-PCB column. Temperature program used for congener specific separation of the PCB, PXB and PXDF on HT8-PCB column: 120C, 20C/min. to 180C, 2C/min. to 260C. 5C/min. to 300C, 5 min. isothermal. Monitoring ions for GC/MS analysis are listed in Table. Standards: Commercially-available native/labeled standards were obtained from CIL as authentic standard/mixtures for crosschecking the assignment. , 4’-bromo- 3, 3’, 4, 5-tetrachloro biphenyl was obtained from CIL for a PXB standard Result and Discussion Atropisomer in air and adipose tissue (HpCB)