Table 1: Intraday and interday accuracy and precision.

Method*OXC takenIntra-day accuracy and precisionInter-day accuracy and precision
OXC foundRE%RSD%OXC foundRE%RSD%

A6.06.172.832.226.183.122.98
12.012.282.331.9811.732.223.06
18.017.731.501.5318.341.892.23

B2.01.952.502.302.042.121.99
4.04.071.751.203.941.521.58
6.05.921.332.706.132.201.60

*In method A, OXC taken/found are in mg and they are μg mL−1 in method B.