Table 1 Pearson correlation matrices between atomic number (Z), average of elements contents (C), relative standard deviation (RSD) and relative average deviation in three matrices of CRMs (soil, plant and animal tissue)
Z | C | RSD | RAD | |
|---|---|---|---|---|
KACST401 | ||||
Z | 1.000 | |||
C | − 0.305 | 1.000 | ||
RSD | 0.138 | − 0.268 | 1.000 | |
RAD | 0.137 | − 0.282 | 0.995 | 1.000 |
KACST302 | ||||
Z | 1.000 | |||
C | − 0.319 | 1.000 | ||
RSD | 0.426 | − 0.303 | 1.000 | |
RAD | 0.424 | − 0.301 | 0.998 | 1.000 |
KACST201 | ||||
Z | 1.000 | |||
C | − 0.224 | 1.000 | ||
RSD | 0.349 | − 0.253 | 1.000 | |
RAD | 0.342 | − 0.251 | 1.000 | 1.000 |