Some science behind the scenes

Mercury chelating plants

Any plant that upon analysis contains mercury, when it has no need of that chemical itself is, by definition capable of chelating the soil. 

The following list is from Dr Duke's phytochemical database and contains just some of the plants he found that contained lead upon analysis.  The implications are also clear, that it is not safe to eat these plants if they have been grown on contaminated land.

Once the chelation of the land is complete, they need to be disposed of safely, for example placed in a deep pit - an open cast mine for example or other deep hole in the ground - where they cannot resurface and where their contaminants are safely buried.

List of plants containing MERCURY

Species Part Lo
ppm
Hi
ppm
Reference
Cinnamomum aromaticum NEES [Lauraceae] Bark 60 60 CAL
Fucus vesiculosus L. [] Plant 40 40 PED
Rhodymenia palmata [] Plant 26 26 DUKE1992A
Lycium chinense MILL. [Solanaceae] Fruit 8 8 CAL
Chondrus crispus (L.) STACKH. [] Plant 7 7 PED
Juncus effusus L. [Juncaceae] Pith 1.41 1.41 DUKE1992A
Arctium lappa L. [Asteraceae] Root 1.27 1.27 CAL
Eucommia ulmoides OLIV. [Eucommiaceae] Bark 0.92 0.92 CAL
Lygodium japonicum (THUNB.) SW. [Schizaeaceae] Pollen Or Spore 0.55 0.55 DUKE1992A
Petroselinum crispum (MILLER) NYMAN EX A. W. HILLL [Apiaceae] Plant 0.004 0.37 AAS USG
Jussiaea repens L. [Onagraceae] Plant 0.31 0.31 DUKE1992A
Celosia cristata L. [Amaranthaceae] Flower 0.29 0.29 DUKE1992A
Sophora angustifolia AIT. [Fabaceae] Root 0.27 0.27 DUKE1992A
Pulsatilla chinensis (BUNGE) REGEL [Ranunculaceae] Root 0.22 0.22 DUKE1992A
Asiasarum heterotropoides MAEK. [Aristolochiaceae] Root 0.19 0.19 DUKE1992A
Asiasarum sieboldii (MIQ.) MAEK. [Aristolochiaceae] Root 0.19 0.19 DUKE1992A
Oryza sativa L. [Poaceae] Seed 0.167 0.167 DUKE1992A
Bupleurum chinense DC. [Apiaceae] Root 0.14 0.14 DUKE1992A
Magnolia denudata DESR. [Magnoliaceae] Flower 0.14 0.14 DUKE1992A
Magnolia fargesii CHENG [Magnoliaceae] Flower 0.14 0.14 DUKE1992A
Magnolia kobus DC. [Magnoliaceae] Flower 0.14 0.14 DUKE1992A
Rheum rhabarbarum L. [Polygonaceae] Pt 0.002 0.14 DUKE1992A
Nardostachys chinensis BATALIN [Valerianaceae] Rhizome 0.13 0.13 DUKE1992A
Acanthopanax gracilistylis W.W.SMITH [Araliaceae] Root Bark 0.11 0.11 DUKE1992A
Sophora subprostrata CHUN & CHEN [Fabaceae] Root 0.11 0.11 DUKE1992A
Spinacia oleracea L. [Chenopodiaceae] Leaf 0.003 0.11 AAS
Amomum xanthioides WALL. [Zingiberaceae] Seed 0.1 0.1 DUKE1992A
Carya illinoensis (WANGENH.) K. KOCH [Juglandaceae] Seed 0.1 0.1 DUKE1992A
Cocos nucifera L. [Arecaceae] Seed 0.1 0.1 FUR
Firmiana simplex (L.) W. F. WIGHT [Sterculiaceae] Seed 0.1 0.1 DUKE1992A
Juglans nigra L. [Juglandaceae] Seed 0.1 0.1 FUR
Pistacia vera L. [Anacardiaceae] Seed 0.1 0.1 DUKE1992A
Plantago asiatica L. [Plantaginaceae] Plant 0.1 0.1 DUKE1992A
Prunus dulcis (MILLER) D. A. WEBB [Rosaceae] Seed 0.002 0.1 AAS FUR
Fraxinus rhynchophylla HANCE [Oleaceae] Bark 0.09 0.09 DUKE1992A
Notopterygium incisum TING. [Apiaceae] Rhizome 0.09 0.09 DUKE1992A
Cistanche salsa (C.A.MEYER) G. BECK [Orobanchaceae] Plant 0.08 0.08 DUKE1992A
Equisetum hyemale L. [Equisetaceae] Plant 0.08 0.08 DUKE1992A
Scutellaria baicalensis GEORGI [Lamiaceae] Root 0.08 0.08 CAL
Triticum aestivum L. [Poaceae] Seed 0.079 0.079 DUKE1992A
Zea mays L. [Poaceae] Seed 0 0.072 HAM33(4):42 USG
Albizia julibrissin DURAZZ. [Fabaceae] Bark 0.07 0.07 DUKE1992A
Hordeum vulgare L. [Poaceae] Sprout Seedling 0.07 0.07 CAL
Lycopodium clavatum L. [Lycopodiaceae] Plant 0.07 0.07 CAL
Vaccinium vitis-idaea var. minus LODD. [Ericaceae] Fruit 0 0.07 DUKE1992A
Anethum graveolens L. [Apiaceae] Plant 0.003 0.06 AAS
Broussonetia papyrifera (L.) VENT [Moraceae] Fruit 0.06 0.06 DUKE1992A
Cynanchum atratum BUNGE [Asclepiadaceae] Root 0.06 0.06 DUKE1992A
Drynaria fortunei (KUNZE) J. SMITH [Polypodiaceae] Rhizome 0.06 0.06 DUKE1992A
Prunella vulgaris L. [Lamiaceae] Flower 0.06 0.06 CAL
Taraxacum mongolicum HAND.-MAZZ. [Asteraceae] Plant 0.06 0.06 DUKE1992A
Artemisia capillaris THUNB. [Asteraceae] Plant 0.05 0.05 DUKE1992A
Chaenomeles lagenaria KOIDZ. [Rosaceae] Fruit 0.05 0.05 DUKE1992A
Corylus avellana L. [Betulaceae] Seed 0.004 0.05 AAS FUR
Cucumis sativus L. [Cucurbitaceae] Fruit 0 0.05 DUKE1992A
Dendrobium nobile LINDL. [Orchidaceae] Stem 0.05 0.05 DUKE1992A
Pimenta dioica (L.) MERR. [Myrtaceae] Plant 0.05 0.05 DUKE1992A
Solanum tuberosum L. [Solanaceae] Tuber 0 0.05 AAS USG
Symphoricarpos orbiculatus MOENCH. [Caprifoliaceae] Stem 0 0.05 DUKE1992A
Tetrapanax papyrifera (HOOK.) K.KOCH [Araliaceae] Pith 0.05 0.05 DUKE1992A
Daucus carota L. [Apiaceae] Root 0.001 0.045 DUKE1992A
Vigna mungo (L.) HEPPER [Fabaceae] Seed 0.045 0.045 DUKE1992A
Fritillaria thunbergii MIQ. [Liliaceae] Bulb 0.04 0.04 CAL
Lactuca sativa L. [Asteraceae] Leaf 0 0.04 DUKE1992A
Pueraria pseudohirsuta TANG & WANG [Fabaceae] Root 0.04 0.04 DUKE1992A
Vigna radiata (L.) WILCZEK [Fabaceae] Seed 0.036 0.036 HAM33(4):42
Areca catechu L. [Arecaceae] Seed 0.03 0.03 DUKE1992A
Bletilla striata (THUNB.) REICHB. f. [Orchidaceae] Tuber 0.03 0.03 CAL
Crataegus cuneata SIEB. & ZUCC. [Rosaceae] Fruit 0.03 0.03 DUKE1992A
Lonicera japonica THUNB. [Caprifoliaceae] Flower 0.03 0.03 DUKE1992A
Rubus chingii HU [Rosaceae] Fruit 0.03 0.03 DUKE1992A
Urtica dioica L. [Urticaceae] Leaf 0.005 0.028 AAS
Apium graveolens L. [Apiaceae] Root 0 0.027 AAS
Juniperus virginiana L. [Cupressaceae] Shoot 0 0.025 DUKE1992A
Pinus echinata MILLER [Pinaceae] Shoot 0 0.025 USG
Quercus stellata WANGENH. [Fagaceae] Stem 0 0.025 DUKE1992A
Pisum sativum L. [Fabaceae] Seed 0.001 0.024 DUKE1992A
Carthamus tinctorius L. [Asteraceae] Flower 0.02 0.02 DUKE1992A
Dioscorea bulbifera L. [Dioscoreaceae] Rhizome 0.02 0.02 DUKE1992A
Eriobotrya japonica (THUNB.) LINDL. [Rosaceae] Leaf 0.02 0.02 CAL
Lophatherum gracile BROGN. [Poaceae] Plant 0.02 0.02 DUKE1992A
Malus domestica BORKH. [Rosaceae] Fruit 0 0.02 AAS USG
Phaseolus vulgaris subsp. var. vulgaris [Fabaceae] Fruit 0 0.02 AAS
Pyrus communis L. [Rosaceae] Fruit 0 0.019 DUKE1992A
Ribes uva-crispa L. [Grossulariaceae] Fruit 0 0.017 DUKE1992A
Beta vulgaris subsp. subsp. vulgaris [Chenopodiaceae] Root 0 0.016 AAS
Raphanus sativus L. [Brassicaceae] Root 0 0.014 DUKE1992A
Brassica oleracea var. capitata l. var. capitata L. [Brassicaceae] Leaf 0 0.013 AAS USG
Prunus domestica L. [Rosaceae] Fruit 0 0.013 AAS USG
Sorbus aucubaria L. [Rosaceae] Fruit 0.001 0.011 DUKE1992A
Vitis vinifera L. [Vitaceae] Fruit 0 0.011 AAS USG
Alisma plantago-aquatica L. [Alismataceae] Rhizome 0.01 0.01 DUKE1992A
Anacardium occidentale L. [Anacardiaceae] Seed 0.01 0.01 DUKE1992A
Asparagus lucidus LINDL. [Liliaceae] Root 0.01 0.01 DUKE1992A
Bertholletia excelsa BONPL. [Lecythidaceae] Seed 0.01 0.01 FUR
Brassica napus var. napobrassica var. napobrassica (L.) REICHB. [Brassicaceae] Root 0 0.01 AAS
Gastrodia elata BLUME [Orchidaceae] Rhizome 0.01 0.01 DUKE1992A
Juglans cinerea L. [Juglandaceae] Seed 0.01 0.01 DUKE1992A
Quisqualis indica L. [Combretaceae] Fruit 0.01 0.01 DUKE1992A
Ribes nigrum L. [Grossulariaceae] Fruit 0 0.01 AAS
Fragaria spp [Rosaceae] Fruit 0 0.009 AAS
Prunus persica (L.) BATSCH [Rosaceae] Fruit 0 0.007 DUKE1992A
Vaccinium macrocarpon AITON [Ericaceae] Fruit 0.001 0.007 AAS
Ribes rubrum L. [Grossulariaceae] Fruit 0 0.006 DUKE1992A
Rubus chamaemorus L. [Rosaceae] Fruit 0.001 0.006 DUKE1992A
Brassica pekinensis (LOUR.) RUPR. [Brassicaceae] Leaf 0 0.002 DUKE1992A
Cichorium endivia L. [Asteraceae] Leaf 0.002 0.002 DUKE1992A
Lycopersicon esculentum MILLER [Solanaceae] Fruit 0.001 0.002 DUKE1992A
Pastinaca sativa L. [Apiaceae] Root 0.001 0.002 DUKE1992A
Allium cepa L. [Liliaceae] Bulb 0 0.001 USG
Asparagus officinalis L. [Liliaceae] Shoot 0.001 0.001 DUKE1992A
Capsicum annuum L. [Solanaceae] Fruit 0.001 0.001 USG
Citrus paradisi MacFAD. [Rutaceae] Fruit 0 0.001 USG
Citrus sinensis (L.) OSBECK [Rutaceae] Fruit 0 0.001 USG 1/
Cucumis melo subsp. ssp melo var.cantalupensis NAUDIN [Cucurbitaceae] Fruit 0.001 0.001 USG
Solanum melongena L. [Solanaceae] Fruit 0.001 0.001 DUKE1992A
Arachis hypogaea L. [Fabaceae] Seed     DUKE1992A
Armoracia rusticana GAERTN. ET AL. [Brassicaceae] Root     AAS
Brassica oleracea var. italica L., PLENCK [Brassicaceae] Leaf     AAS
Citrus reticulata BLANCO [Rutaceae] Fruit     AAS
Musa x paradisiaca L. [Musaceae] Fruit     AAS
Rosa canina L. [Rosaceae] Fruit     AAS
Senna obtusifolia (L.) H.IRWIN & BARNEBY [Fabaceae] Seed     DUKE1992A
Vaccinium myrtillus L. [Ericaceae] Fruit     AAS
Vigna unguiculata subsp. unguiculata [Fabaceae] Seed     JSF55:401