Table 1.
List and analytical results of certified reference materials used in this study.
| Producer | CRM | Matrix | n | Hg Speciation | Obtained Value | Certified Value | Recovery (%) |
|---|---|---|---|---|---|---|---|
| IGGE, CAGS | GBW10020 | Citrus Leaves | 6 | THg (µg/kg) | 149 ± 2 | 150 ± 20 | 99 ± 5 |
| China CDC | ZK020-2 | Human Urine | 13 | THg (µg/L) | 45 ± 4.0 | 49 ± 4.2 | 92 ± 7 |
| IGGE, CAGS | GBW07601 | Human Hair | 28 | THg (µg/kg) | 363 ± 9 | 360 ± 80 | 101 ± 5 |
| Japan, NIES | NIES-13 | Human Hair | 17 | MeHg (mg/kg) | 3.4 ± 0.4 | 3.8 ± 0.4 | 89 ± 10 |
| Canada, NRC | TORT-2 | Lobster | 15 | MeHg (µg/kg) | 132 ± 11 | 152 ± 13 | 87 ± 14 |
IGGE, CAGS: Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, China; CDC: China Center for Disease Control and Prevention; NIES: National Institute for Environmental Studies; NRC: National Research Council.