Research Article

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

Table 2

Concentrations of trace metals in soil dust collected from playing ground from the selected high schools in Pretoria.

SampleTrace metals

School ASD AI
SD AII
School BSD BI
SD BII
School CSD CI
SD CII
School DSD DI
SD DII
School ESD EI
SD EII
School FSD FI
SD FII
School GSD GI
SD GII
School HSD HI
SD HII

difference in the concentrations of trace metals from the schools ().
There is no significant difference in the concentrations of trace metals from the schools ().
SD I and II: soil dust samples collected from two areas in the school.