Table 1.

Validation data for analysis of organic acids using HPLC

Compound	Retention time (min)	Recovery efficiency (%)	R2	LOD (mg/L)a	LOQ (mg/L)b
Phytic acid	7.73	63.3 ± 8.9	0.999	0.05	0.17
Oxalic acid	8.52	101.9 ± 5.81	0.999	2.25	7.49
Citric acid	9.59	45.3 ± 3.87	0.999	0.0006	0.0019
Lactic acid	14.52	100.1 ± 1.99	0.999	1.13	3.78
Formic acid	15.96	94.9 ± 6.39	0.988	0.10	3.33
Acetic acid	17.42	103.8 ± 6.45	0.999	0.54	1.80

^aLimit of detection

^bLimit of quantification