Label-free detection of uptake, accumulation, and translocation of diesel exhaust particles in ex vivo perfused human placenta

Table 1 Characterization of DEPs

Characteristics		DEPs
BET: Specific surface area (m²/g)^a		108
Laser diffraction: Hydrodynamic diameter (nm)^a	In ddH₂0 with 0.001% Triton	180 (d(0.5)) 330 (d(0.9))
DLS: Hydrodynamic diameter ( nm)/PDI^b	In PM	257 (16)/0.52 (0.06)
Zeta potential (mV)^b	In 10% PM	− 29 (1.46)

BET: Brunauer–Emmet–Teller method; DLS: dynamic light scattering; d(0.5): mean particle-size indicating the diameter below which 50% of the volume is present; d(0.9): mean particle-size indicating the diameter below which 90% of the volume is present; PDI: polydispersity index; PM: perfusion medium
^aAccording to the manufacturer (https://www-s.nist.gov/srmors/certificates/1650b.pdf)
^bExperimentally determined parameters of 4.5 µg/mL DEP suspensions: Hydrodynamic diameter represents Z-average mean (SD); Zeta potential represents mean (SD)

ISSN: 1477-3155