Table 2 Comparisons of the mean, minimum, and maximum values of the Cu, Zn, and Pb isotopic compositions in this study with results in the literature
From: Toxic metal concentrations and Cu–Zn–Pb isotopic compositions in tires
Samples | δ65CuAE647(‰) | δ66ZnIRMM3702(‰) | 206Pb/207Pb | References |
|---|---|---|---|---|
Tire-A | − 0.45 (− 0.58 to − 0.22) | − 0.05 (− 0.07 to − 0.03) | 1.1526 (1.1242 to 1.1683) | This study (n = 5) |
Tire-B | − 0.53 (− 0.77 to − 0.27) | − 0.06 (− 0.09 to − 0.03) | 1.1604 (1.1398 to 1.1747) | This study (n = 6) |
Tire-C | − 0.63 | − 0.09 | 1.1559 | This study (n = 1) |
Tire-D | − 0.91 (− 1.04 and − 0.78) | − 0.04 (− 0.05 and − 0.04) | 1.1545 (1.1477 and 1.1613) | This study (n = 2) |
Tire-E | − 0.51 (− 0.55 and − 0.47) | − 0.07 (− 0.073 and − 0.070) | 1.1739 (1.1738 and 1.1739) | This study (n = 2) |
Tire (UK) | 0.05 (− 0.04 to 0.12) | − 0.07 (− 0.08 to − 0.06) | – | Dong et al. (2017) |
Tire (USA) | – | − 0.23 (− 0.37 to − 0.13) | – | Thapalia et al. (2010) |
Background soil | 0.09 (− 0.06 to 0.19) | 0.10 (0.03 to 0.16) | 1.1827 (1.1792 to 1.1854) | unpublished data |
Road dust | 0.05 (− 0.04 to 0.13) | − 0.11 (− 0.17 to − 0.03) | 1.1514 (1.1432 to 1.1606) | Jeong and Ra (2021a) |
Brake dust | 0.19 (0.16 to 0.21) | − 0.17 (− 0.19 to − 0.16) | 1.1967 (1.1966 to 1.1968) | Jeong et al. (2022) |