Table 1 Various evaluated components for the determination of mercury in SPM samples
Sample I.D. | SPM (μg/m3) | Concentration of mercury obtained from AAS-HG after reducing blank (μg/litre) [CHg] | Volume made for test samples (mL) [V TEST ] | Total weight of SPM deposited on 18 cm × 23 cm filter paper (g) [W TSPM ] | Weight of SPM deposited on 18 cm × 11.5 cm filter paper area taken for analysis (g) [W ANA ] | Volume of air processed through HVS at STP, (m3) [V HVS ] | Recovery of the analytical procedure (%) [R HVS] | **Concentration of mercury in ng/m3C(MHg) |
|---|---|---|---|---|---|---|---|---|
S-1 | 395 | 58.22 (2.82)* | 50 | 0.17744 | 0.08872 | 493.52 | 94.39 | 12.55 ± 2.44 |
S-2 | 203 | 23.41 (2.13)* | 50 | 0.09124 | 0.04562 | 414.97 | 6.00 ± 1.23 | |
S-3 | 2337 | 62.32 (4.13)* | 50 | 1.05086 | 0.52543 | 457.16 | 14.50 ± 2.87 | |
S-4 | 251 | 6.83 (1.12)* | 50 | 0.11279 | 0.05639 | 456.66 | 1.59 ± 0.37 | |
S-5 | 338 | 14.04 (0.92)* | 50 | 0.15214 | 0.07607 | 471.24 | 3.17 ± 0.63 | |
S-6 | 429 | 23.11 (1.62)* | 50 | 0.19300 | 0.09650 | 417.58 | 5.89 ± 1.17 | |
S-7 | 347 | 16.6 (1.33)* | 50 | 0.62306 | 0.31153 | 391.63 | 4.51 ± 0.91 |