Composition of Trace Metals in Dust Samples Collected from Selected High Schools in Pretoria, South Africa

Table 1

Concentrations of trace metals from classrooms dust from the selected high schools in Pretoria.

Sample

Trace metals

School A

CD AI

CD AII

School B

CD BI

CD BII

School C

CD CI

CD CII

School D

CD DI

CD DII

School E

CD EI

CD EII

School F

CD FI

CD FII

School G

CD GI

CD GII

4

School H

CD HI

CD HII

differences in the concentrations of trace metals from the schools ().
significant differences in the concentrations of trace metals from the schools ().
CDI and II: classroom dust samples collected from two classrooms.