A 14-year-old girl charged with attempted murder following an alleged poisoning incident in Brisbane's south-west has been granted bail.

Police say the teenager attempted to poison two children at Richlands yesterday.

They allege the girl deliberately gave brownies containing a household chemical to two boys, aged 12 and 13, who live in her street.

It is understood the children did not ingest enough poison to become seriously ill.

The teenager has also been charged with one count of attempted murder, as well as administering poison with attempt to harm, and two counts of acts intended to maim.

The matter was the subject of a closed court hearing this morning.

Police earlier said the hearing would likely determine how the girl would be dealt with under provisions of the Youth Justice Act.