Polychlorinated dibenzo-p-dioxins and dibenzofurans in the ambient atmosphere of Bloomington, Indiana

Concentrations, profiles and gas-particle partitioning of PCDD/Fs, PCBs and PBDEs in the ambient air of an E-waste dismantling area, southeast China

“…Table 2 shows the regression data of logK p versus log P L 0 for PCDD/Fs, PCBs and PBDEs. Previous studies reported the temperature dependent P L 0 of PCDD/Fs by correlating the P L 0 with gas chromatographic retention indexes (RI) [16][17][18] , i.e. logP L 0 = −1.34RI/T+1.67×10 −3 RI −1320/T.…”

Atmospheric Concentrations of PCDDs/PCDFs in Southern California

“…18 ' 19 ' 21 Hites et al further states that vapor/particulate partitioning of PCDDs/PCDFs in the atmosphere is influenced almost exclusively by individual component vapor pressure and ambient temperature. As a result, the PCDDs/PCDFs of primary toxicological significance (tetra and penta) are expected to be predominantly vapor associated in the ambient atmosphere of southern California.…”

“…Hites et al report that the vapor phase PCDDs/PCDFs are more subject to direct photochemical degradation than are their particulate-associated counterparts. 18 '…”

Partitioning of dioxins (PCDDs/Fs) in ambient air at urban residential locations

“…Eitzer and Hites (1989) reported winter particle fractions of \0.5 for Bloomington, Indiana, USA À Á of 2,3,7,8-substituted congeners estimated using RTI (Eq. 4) were not significantly different from those using Eq.…”