Table 2.

Concentration of metal ions in the endophytic A. baumannii.

Metal ion	Concentration (ppb)	LOD	r ∗
Na+	ND	< 20.034	0.999
Mg2+	10365.72±158.30a	< 3.661	0.999
Al3+	200.68±2.73e	< 0.383	0.999
K+	ND	< 20.756	0.999
Ca2+	4507.02±61.78b	< 1.420	0.999
Cr2+	84.33±0.54f	< 0.059	0.999
Fe2+	1307.13±2.35c	< 1.162	0.998
Ni2+	48.74±0.10g	< 0.052	0.999
Cu2+	42.38±0.352h	< 0.045	0.999
Zn2+	304.10±2.61b	< 0.205	0.999
Cd2+	0.83±0.01j	< 0.023	0.999
Pb2+	2.60±0.01i	< 0.024	0.999

Results are shown as mean ± SD (n=3).

LOD: limit of detection; ND: not detected.

Significant differences among the mean values of each column determined by Tukey's HSD test (P < 0.05) are indicated by different letters (a–j).

^∗Correlation coefficient of the calibration curve.