Figure 1.

Loading efficiency of synthesised liposomes by inductively coupled plasma optical emission spectrometry (ICP-OES). Loading efficiency (% phospholipids/encapsulated arsenic—As/P) of liposomes of (a) different sizes and (b) different charges. All of the different-sized liposomes (100 nm, 200 nm, and 400 nm) have a neutral charge, whereas all of the different-charged liposomes (neutral, positive, and negative) are 100 nm in size. Data are presented as mean ± standard deviations (SD) of three replicate measurements of at least three independent experiments. An unpaired t test (p > 0.05) was used to test for any significant difference in the loading efficiency of liposomes of three sizes (ranging from 100 to 400 nm), and three charges (neutral, negative, and positive). No significant difference was observed between the liposomes of different sizes, although neutral liposomes displayed a significantly higher loading efficiency than the others (* p < 0.05).