Table 1. Limits of Detection and Intraday and Interday Precision Values Obtained for Analyzed Elements.

parameter	P	S	K	Ca	Fe	Cu	Zn	Se
LOD (SD) [ppm]	12.96(0.45)	8.32(0.29)	4.41(0.16)	1.832(0.072)	0.1916(0.0082)	0.0852(0.0035)	0.1078(0.0042)	0.0297(0.0011)
intraday precision [%]	2.0	1.6	1.0	3.1	0.3	0.7	0.2	4.9
interday precision [%]	1.3	1.2	0.7	2.8	0.3	0.4	0.2	1.2