10.8
[1]. Ali Behbahani, et al. Imidazole-Modified Nanoporous Silica for Lead Ion Solid Phase Extraction Prior to Determination from Industrial Wastewaters by Flame Atomic Absorption Spectrometry. J AOAC Int. 015 Sep-Oct;98(5):1417-.
H0-H15-H19-H5
P61-P64-P70-P71-P80-P0+P5-P04+P40-P05+P51+P8-P0-P6+P64-P40+P-P405-P501