Aerosol sampling at the ground-based AMMA super site of Banizoumbou was performed using two identical novel purpose-built wind-oriented inlets designed for the AMMA field campaigns [Rajot et al., 2008]. The cut-off diameter 50% efficiency of these inlets has been calculated to be approximately 40 µm by using the standard formulae of particle losses in inlets and tubings reported in Willeke and Baron [1993] and Hinds [1982]. Each inlet leads to a sampling chamber containing seven different sampling lines, each of them dedicated to a different instrument. Multiple sampling lines is very convenient as it allows collecting various filter samples in parallel, differentiated and optimized in terms of sampling medium, exposure interval and flow rate as a function of the analytical technique to be applied. This also results in minimal manipulation of the filters after sampling. Samples were collected on acid washed 47 mm polycarbonate Nuclepore filters (0.4 µm pore size) mounted on plastic rings. Samples were stored in Petri dishes after sampling. Sampling time was of the order of hours, and was varied depending on the aerosol mass concentration measured on-line by a Tapered Element Oscillating Microbalance (TEOM, Rupprecht and Patashnick, Albany, USA) [Rajot et al., this issue].