Table 2 Values of precision, trueness and detection limit for different elements determined by using AAS.
Element | Precision (%CV) a: intra-day precision b: inter-day precision c: reproducibility | Trueness (%) a: calculated with CRM b: as recovery | Limit of detection a: in blank solution b: in real sample |
|---|---|---|---|
CV AAS | |||
Hg | a: below 3.746 | a: 100.0–104.546 b: 89.9–99.246 | a: 0.0003 μg/mL46 0.00019 μg/mL46 |
F AAS | |||
Mg |  | b: 98.134 | a: 0.05 μg/mL34 |
Ca |  | b: 102.434 | a: 0.01 μg/g34 |
Cr |  | b: 102.434 | a: 0.05 μg/g34 |
Mn | a: 3.264 | a: 97.1–99.264 b: 99.464 99.364 | a: 0.000097 μg/mL64 |
Fe |  | b: 97.834 | a: 0.08 μg/g34 |
Ni |  | a: 98.863 99.263 | a: 0.00052 μg/mL63 |
Cu |  | b: 104.134 | a: 0.03 μg/g34 |
Zn |  | a: 95.9110* 95.1110* b: 95.234 | a: 0.03 μg/g34 |
Cd | nd: 2.124 | b: 96.0–99.024 94.634 | a: 0.00011 μg/mL24 0.03 μg/g34 |
Pb | nd: 1.924 | b: 95.8–101.224 96.034 | a: 0.0003 μg/mL24 0.03 μg/g34 |
GF AAS | |||
Be |  |  | b: 0.000007 μg/mL5 0.000002 μg/mL5 |
Al | a: 1.9–9.053 0.8–2.812 b: 5.8–7.212 nd:  ± 7.1515 | a: 83.315 10015 42.851 97.651 5257 b: 67–9851 97.0 ± 3.8–103.4 ± 2.853 98–10912 10357 | a: 0.9 μg/mL53 0.00023 μg/mL12 0.00035 μg/mL12 0.00048 μg/mL57 0.0011 μg/mL15 b: 0.000023 μg/mL12 0.001 μg/mL12 |
Si | nd: 8.455 5.955 | b: 97–10455 |  |
Cr | a: 2.0–2.9108 c: 5.35–6.5959 1.9–4.1108 nd:  ± 4.3715 | a: 101.215 107.715 99.0–99.959* 91.76–102.49108 b: 83.1–86.3108 | a: 0.0000062 μg/mL59 0.00042 μg/mL15 nd: 0.001 μg/g108 |
Mn | a: 0.5–3.353 nd: 7.26–9.1760 | a: 99–99.360* 9845* 99.1110* 95.3110* b: 99.5 ± 0.8–103.3 ± 1.253 | a: 27.6 μg/g53 0.00013 μg/g60 nd: 0.6 μg/g45 |
Fe |  | a: 9745* 106105* 101105* | nd: 1.6 μg/g45 |
Co | nd: 7.6960 0.8060 6.3060 | a: 98.9–99.660* | a: 0.0013 μg/g60 |
Ni | c: 3.06–8.2459 nd: 1.5219 (standard solution) 10.419 (sample) 4.3819 (sample) | a:  + 27.419# − 2.919#  + 52.519#  + 41.719#  + 8.119# − 24.319#  + 59.319# 99.8–100.359* b: 92.1–123.519 | a: 0.00023 μg/mL19 0.000025 μg/g59 |
Cu | nd: 7.3560 1.2960 6.160 | a: 96.4–99.860* 9945* 102.5110* 103.8110* | a: 0.00000017 μg/g60 nd: 0.2 μg/g45 |
Zn |  | a: 9745* | nd: 0.3 μg/g45 |
As | nd: 4.7360 6.260 | a: 99.460* 103.260* | a: 0.0000159 μg/g60 |
Mo | nd:   ± 5.915 | b: 95.3–103.015 | a: 0.00081 μg/mL15 |
Cd | c: 4.72–7.6959 nd: 3.614 3.214 (standard material) | a: 100.3–10259* 8645* 10514 11514 | a: 0.00018 μg/g56 0.00002 μg/g59 0.005 μg/mL14 nd: 0.02 μg/g45 |
Pb | c: 3.63–7.7659 | a: 100.5–100.959* 10645* | a: 0.00157 μg/g56 0.001 μg/g59 nd: 0.1 μg/g45 |
Bi | nd: 4.344 4.744 | a: 96.844 b: 97.744 101.144 | a: 0.00002 μg/mL44 0.0015 μg/mL44 |
