Table 2
Surface atomic composition of magnetite nanoparticles as determined by high resolution XPS, at a take off angle of 45°
Element	Magnetite	Magnetite with a monolayer of a ATRP initiator	Magnetite with a monolayer PMMA
C1s	61.3	40.6	63.5
O1s	34.2	43.5	32.0
P2p	–	1.3	0.8
Fe2p	4.3	13.7	2.0
Br3d	–	0.9	0.4

Babu and Dhamodharan Nanoscale Research Letters 2008 3:109   doi:10.1186/1556-276X-3-109