Lanmuchang arable soil and green cabbage (S621)
Guizhou, Lanmuchang, China
Soils
- Type
- Soil
Lanmuchang (Guizhou), Hg-Tl deposit where Tl forms its own minerals (lorandite), mined for Hg for over 350 years then for lorandite alone in the 1990s until 2000; poorly developed soils (Oxisols) derived from weathering of mineralised outcrops, rich in Fe2O3 (100 to 200 g/kg). Soil at +0.45, heavier than the Lengerich soils and Chinese loess, possibly through oxidation of sulphide-derived Tl(I) and Tl(III) fixation on Fe-Mn oxyhydroxides. Green cabbage, a strong Tl accumulator, gets lighter from root (-2.54) to young edible leaves (-5.39): preferential uptake of light Tl, opposite to the heavy Tl enrichment of the contaminated Lengerich soils (Kersten et al., 2014). Indicative coordinates of the deposit.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.45 ± 0.35 ε | arable soil (S621) Published mean of 2 to 4 analyses; ± 0.35 ε (2 SD); 30 mg/kg Tl (dry weight). | Kersten et al. (2014), Tracing anthropogenic thallium in soil using stable isotope compos… | ||
| −2.54 ± 0.35 ε | green cabbage, root Published mean of 2 to 4 analyses; ± 0.35 ε (2 SD); 25 mg/kg Tl (dry weight). | Kersten et al. (2014), Tracing anthropogenic thallium in soil using stable isotope compos… | ||
| −2.91 ± 0.35 ε | green cabbage, stem Published mean of 2 to 4 analyses; ± 0.35 ε (2 SD); 83 mg/kg Tl (dry weight). | Kersten et al. (2014), Tracing anthropogenic thallium in soil using stable isotope compos… | ||
| −3.68 ± 0.35 ε | green cabbage, old leaves Published mean of 2 to 4 analyses; ± 0.35 ε (2 SD); 1,000 mg/kg Tl (dry weight). | Kersten et al. (2014), Tracing anthropogenic thallium in soil using stable isotope compos… | ||
| −5.39 ± 0.35 ε | green cabbage, young leaves (edible part) Published mean of 2 to 4 analyses; ± 0.35 ε (2 SD); 105 mg/kg Tl (dry weight). | Kersten et al. (2014), Tracing anthropogenic thallium in soil using stable isotope compos… |
Deposits of the same type
- Luchengjiang soil profiles, outside the Lanmuchang mining zone China
- Soil profile with interbedded mine tailings at the foot of the Lanmuchang mining area China
- Qingzhen power plant soils China
- Huaxi control site soils China
- Soils and sediments of the artisanal zinc smelting region (Guizhou) China
- Hezhang artisanal zinc smelting area soils China
- Paddy fields along the Fanjia river China
- Paddy soil profiles around Niujiaotang China
Cite this page
IsoFind Atlas (2026). Lanmuchang arable soil and green cabbage (S621), isotope signatures. https://www.isofind.tech/isotopes/en/sites/sol-cultive-et-chou-vert-de-lanmuchang-s621/ (accessed 2026-10-16).
@misc{isofind2026lanmuchangarablesoilandgreenc,
title = {Lanmuchang arable soil and green cabbage (S621), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/sol-cultive-et-chou-vert-de-lanmuchang-s621/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16