Evaluation of Pb (II) Removal by Tea Pulp Modified with Magnetite Nanoparticle

Table 1

Statistical results of histograms of magnetite nanoparticles.

Sample	Total number of measurements	Mean (nm)	Standard deviation (nm)	Smallest particle size (nm)	Largest particle size (nm)
400	100	18.6	7.2	8.4	45.8
450	100	36.3	12.8	34.7	68.1