Table 3 Uncertainty in repeatability of values obtained from AAS
Sample I.D. | Concentration of arsenic in SPM samples in ng/m3 (x) | Standard uncertainty u(x) | Combined uncertainty due to [C As ] from section 5.0 |
|---|---|---|---|
S-1 | 5.58 | ± 0.271*1 | 0.272 |
S-2 | 3.19 | ± 0.182*1 | 0.183 |
S-3 | 4.34 | ± 0.212*1 | 0.213 |
S-4 | 1.44 | ± 0.112*1 | 0.113 |
S-5 | 1.69 | ± 0.122*1 | 0.123 |
S-6 | 2.33 | ± 0.131*1 | 0.132 |
S-7 | 1.42 | ± 0.113*1 | 0.114 |