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(Click for frequent words.) 75 mercury arsenic 74 cadmium arsenic 72 cadmium chromium 71 arsenic selenium 70 arsenic cadmium chromium 70 chromium cadmium 69 mercury selenium 68 mercury dioxins 68 arsenic chromium 68 manganese zinc 67 antimony arsenic 66 beryllium cadmium 66 iron manganese 66 cadmium mercury 66 arsenic manganese 66 mercury cadmium 66 mercury chromium 65 arsenic benzene 65 chromium mercury 65 barium cadmium 65 arsenic cadmium mercury 65 arsenic cadmium 65 chromium nickel 65 cadmium barium 65 arsenic barium 64 mercury arsenic cadmium 64 cyanide arsenic 64 chromium arsenic 64 tetrachloroethene 64 arsenic cadmium copper 64 arsenic beryllium 63 arsenic antimony 63 benzene arsenic 62 PCBs DDT 62 benzene toluene xylene 62 arsenic antimony mercury 62 PCBs dioxins 61 nitrates phosphates 61 arsenic 61 neodymium Nd 61 polyaromatic hydrocarbons 60 anomalous arsenic antimony 60 arsenic boron 60 mercury chromium cadmium 60 arsenic cyanide 60 pathfinder element 60 tetrachloroethene PCE 60 arsenic bismuth 59 trichloroethane 59 manganese chromium 59 dioxins furans 59 cyanides 59 polychlorinated biphenyl PCB 59 barium chromium 59 Chromium VI 59 polynuclear aromatic hydrocarbons 59 amphibole 59 toxic pollutant 59 plutonium americium 59 arsenic cobalt 58 bismuth Bi 58 sodium magnesium 58 Lanthanum La 58 tremolite 58 cadmium Cd 58 polychlorinated vinyls 58 biphenyls 58 Hexavalent chromium 58 Fecal coliform 58 radioactive thorium 58 trichloroethene TCE 58 lanthanum neodymium 58 barium 58 lead mercury cadmium 58 ppm zinc 58 organochlorines 58 DDT dieldrin 58 dioxin PCBs 57 tremolite asbestos 57 colorless odorless radioactive 57 nickel vanadium 57 polybrominated 57 Sulfates 57 PCBs pesticides 57 cadmium chromium copper 57 polychlorinated biphenyls PCBs 57 degreasing solvent 57 barium arsenic 57 benzene carcinogen 57 naturally occurring radium 57 arsenide 57 chromium polybrominated biphenyl PBB 57 TCE trichlorethylene 57 PCBs polychlorinated biphenyls 57 trichloroethene 57 polybrominated diphenyl ethers PBDEs 57 ozone particulate matter 57 zinc cadmium 57 pathfinder elements 57 polybrominated diphenyl ether PBDE 57 chromium manganese 57 diphenyl ethers 57 carbon tetrachloride 57 hydroxides 56 PAHs polycyclic aromatic hydrocarbons 56 zinc Zn 56 pyroxene 56 polychlorinated PCBs 56 cerium Ce 56 arsenic radium 56 cadmium hexavalent chromium 56 formaldehyde benzene 56 cadmium mercury hexavalent 56 #,#,# trichloroethane 56 benzene formaldehyde 56 heptachlor 56 particulate matter nitrogen oxides 56 benzene toluene 56 haloacetic acids 56 DDT PCBs 56 PCBs mercury 56 cadmium cobalt 56 zinc indium 56 hydrocarbons carbon monoxide 56 Polychlorinated biphenyls 56 nitrogen oxides carbon monoxide 56 hormone disrupters 56 Hexavalent Chromium 56 benzene ethylbenzene 55 polybrominated diphenyl ether 55 hormone disrupter 55 naturally occurring radioactive 55 Hydrogen sulfide 55 carcinogen benzene 55 methyl mercury 55 potent carcinogen 55 PDBEs 55 dioxins PCBs 55 dichloroethylene 55 cadmium selenium 55 phosphorus magnesium 55 carbon dioxide sulfur dioxide 55 benzopyrene 55 elements HREE 55 carbon disulfide 55 crystalline silica 55 contaminants 55 nitrogen dioxide sulfur dioxide 55 furans 55 toxic pollutants 55 chlorinated pesticides 55 cerium lanthanum 55 barium strontium 55 dichromate 55 lithium boron 55 pentachlorophenol 55 Polybrominated 55 carcinogenic polycyclic aromatic hydrocarbons 55 polybrominated diphenyl ethers 55 chlordane 55 radium naturally occurring 55 biphenyls PCBs 54 carcinogenic chemicals 54 aromatic hydrocarbons 54 perfluorinated compounds 54 hydrogen chloride HCl 54 folate magnesium 54 trihalomethanes THMs 54 zero valent 54 phosphorous potassium 54 epidote 54 chromium 54 combustion byproducts 54 dichloroethene 54 gallium germanium 54 microcystins 54 sulfuric acid caustic soda 54 cited krypton strontium 54 aquatic toxicity 54 THMs 54 pentoxide 54 anthracene 54 pyrene 54 fluorides 54 carcinogens 54 impurities contaminants 54 benzo pyrene 54 magnesium calcium 54 phosphates nitrates 54 allergens irritants 54 hydrothermal magnetite 54 carbon monoxide nitrogen oxides 54 irritate airways 54 Carbonyl 54 Arsenic occurs 54 biotite rich 54 yttrium Y 54 ammonia nitrogen 54 radionuclide detection 54 Sodium cyanide 54 trihalomethane 54 magnesium carbonate 54 iodine cesium 54 naturally occurring mineral 54 amphibole asbestos 54 praseodymium 54 carbon monoxide hydrocarbons 54 Microcystis 54 Polycyclic Aromatic Hydrocarbons 54 chemical perfluorooctanoic acid 54 benzene toluene ethylbenzene 54 kyanite 53 fluorimetry partial digestion 53 asbestosis lung cancer 53 selenium 53 magnesium zinc 53 Athabasca watershed 53 radiological contaminants 53 teletherapy sources 53 chlorine byproducts 53 tantalum Ta 53 hexavalent chromium 53 uranophane 53 pollutants 53 nondetectable 53 salty dissolved solids 53 naturally occurring arsenic 53 sulphates 53 iron calcium magnesium 53 disinfection byproducts 53 inorganic salts 53 niobium Nb 53 iron sulphides 53 iron calcium potassium 53 Elemental mercury 53 g/m3 53 Volatile Organic Compounds VOCs 53 algal toxins 53 calcium magnesium potassium 53 persistent bio accumulative 53 fecal coliforms 53 dioxins 53 total dissolved solids 53 harmful contaminants 53 tuffaceous rocks 53 Inorganic arsenic 53 aromatic amines 53 iron sulfide 53 Elevated arsenic 53 chalcopyrite copper 53 americium 53 permanganate chemical 53 polychlorinated 53 tetrachlorethylene 53 Barium 53 endrin 53 triclocarban 53 carbon monoxide particulate matter 53 sulfur dioxide carbon monoxide 53 hydrogen chloride 53 #ppm [002] 53 Methyl mercury 53 Study Tanning beds 53 actinolite 53 solvents pesticides 53 pyrite marcasite 53 potassium thorium 53 toxins 53 silicate mineral 53 pesticides chlorpyrifos 53 hydrogen sulfide ammonia 53 HAAs 53 suspected carcinogen 53 perfluorinated chemicals 53 trivalent chromium 53 mercury PCBs 53 polycyclic aromatic hydrocarbons 53 Nitrogen oxide 53 contaminants leach 52 Total Dissolved Solids 52 arsenic contaminated 52 flammable corrosive 52 tetrachlorethylene PCE 52 Microscopic particles 52 acids solvents 52 Dioxane 52 silicate minerals 52 leachable 52 Cr#O# 52 atmospheric deposition 52 toxaphene 52 Transuranic waste 52 drywall emits 52 nickel cadmium 52 Chlordane 52 pthalates 52 nitrogenous compounds 52 dioxides 52 contaminant 52 dimethyl sulfide 52 Sulfate 52 toxicants 52 nitric acids 52 fecal coliform 52 hazardous solvents 52 Potassium hydroxide 52 perfluorochemicals PFCs 52 indoor radon 52 soft whitish 52 selenium zinc 52 bornite chalcopyrite 52 carbonatized 52 amosite 52 ferrous fumarate 52 sulfer 52 harmful toxins 52 dioxane 52 Carbon monoxide CO 52 asbestos contaminated vermiculite 52 contains arsenic cadmium 52 concentrations 52 respirable particles 52 toxic substances 52 corrosives 52 carbon monoxide sulfur dioxide 52 molybdenum bismuth 52 barium chloride 52 biotitic 52 carcinogenic byproducts 52 soot smog 52 Cerium Ce 52 disseminated arsenopyrite 52 nickel matte electrolytic 52 olivines 52 pyrites 52 toxic chemicals 52 lead cadmium arsenic 52 lepidolite 52 breccias containing 52 silica carbonate 52 methyl chloride 52 causing splotchy teeth 52 resorcinol 52 silver indium 52 odorless tasteless 52 manganese oxides 52 toxic dioxins 52 iron oxides 52 potassium phosphorus 52 benzene xylene 52 mercury 52 Toxic chemicals 52 mercury Hg 52 sulfur dioxide nitrogen dioxide 52 finely disseminated pyrite 52 reproductive toxins 52 solvent vapors 52 Sulfur dioxide 52 bioaccumulative 52 Chalcopyrite 52 perfluorocarbons 52 carcinogenic substances 52 sulfur oxides nitrogen oxides 52 sludges 52 dental amalgams 52 chlorinated solvents 52 thallium toxic 52 fecal chloroform 52 biphenyl 52 realgar 52 TCE PCE 52 phthalate DEHP 52 Dechlorane Plus 52 silica alumina 52 mercury barium 52 nickel Ni 52 magnesium potassium 52 calcium magnesium iron 52 radionuclides 52 manganese oxide 52 carcinogenic compounds 52 magnesium sodium potassium 52 Hydrogen Sulphide 51 PAHs 51 Chlorinated 51 inorganic contaminants 51 oceanic pollutants 51 Terbium Tb 51 carbon monoxide nitrogen dioxide 51 perfluorooctanoic acid PFOA 51 hexachlorobenzene 51 enterococcus bacteria 51 calcium magnesium 51 fecal coliform bacteria 51 chrysocolla 51 hexavalent chromium polybrominated biphenyls 51 silver arsenic antimony 51 bismuth 51 sphalerite zinc 51 perfluorooctane 51 toluene benzene 51 element boron 51 nickel chromium 51 magnesium phosphorous 51 chromium VI 51 abundant pyrite 51 dioxin TCDD 51 PVC phthalates 51 magnesium phosphorus 51 chlorinated solvent 51 sulfur dioxide SO2 nitrogen 51 Polybrominated diphenyl ethers 51 cherty 51 Elevated concentrations 51 toxic polychlorinated biphenyls 51 #ppm molybdenum [002] 51 magnesium manganese 51 indium gallium 51 perfluorooctane sulfonate PFOS 51 Tetrachloroethylene 51 picocuries 51 anomalous concentrations 51 pesticides aldrin 51 respiratory irritants 51 Dysprosium Dy 51 manganese 51 sulfides 51 swallowing radioactive iodine 51 vinyl lunchboxes 51 PFOAs 51 polychlorinated biphenyl 51 Ethylbenzene 51 PFCAs 51 Sulfur Dioxide 51 ozone particulates 51 dissolved solids 51 Fe#O# 51 picocurie 51 airborne particulates 51 Ag Pb 51 magnesium silicate 51 Polychlorinated Biphenyls 51 sulfosalts 51 erode tooth enamel 51 riboflavin niacin 51 BPA phthalates 51 niobium tantalum 51 carcinogenic benzene 51 sulfur dioxide mercury 51 Polycyclic aromatic hydrocarbons 51 Chelation removes heavy 51 antimony 51 pyrite altered 51 mercury arsenic chromium 51 Nitrosamines 51 PCBs dioxin 51 respirable dust 51 groundwater contaminant 51 dichloroethene DCE 51 galena pyrite 51 South Fork Tenmile 51 stain repellents 51 nitrogen potassium 51 epithermal pathfinder elements 51 Arsenic 51 soils sediments 51 DuPont DeLisle plant 51 barium sulphate 51 spewed benzene 51 crystalline silica dust 51 pyrophyllite 51 thiosulphate 51 bastnasite 51 cleaners disinfectants 51 platinum Pt 51 potassium magnesium calcium 51 zinc selenium 51 spontaneously ignite 51 carcinogens mutagens 51 Polluted runoff 51 chemical leaches 51 flame retardants PBDEs 51 TTHMs 51 Copper Cu 51 ICP AES Method 51 formaldehyde carcinogen 50 sulfur dioxides 50 secondary chalcocite 50 Volatile organic compounds 50 kidneys excrete 50 Hydrogen Cyanide 50 glycol ethers 50 nitrate nitrogen 50 Highly anomalous 50 radioactive byproducts 50 fecal bacteria 50 pavement sealants 50 selenium tellurium 50 Enterococcus bacteria 50 disinfection byproducts DBPs 50 elements europium 50 enargite 50 magnesium selenium 50 sulphate 50 harmful substances 50 chalcopyrite pyrite 50 coal tars 50 weakly anomalous 50 dunite 50 carbonaceous material 50 carcinogen 50 chromic acid 50 Contaminants 50 pollutes groundwater 50 estrogen mimicking 50 orpiment 50 magnesium hydroxide 50 chlorobenzene 50 diopside 50 trichlorethylene TCE 50 organochlorine pesticides 50 halides 50 lanthanum La 50 halite 50 hydrated silica 50 copper sulphides 50 #,# DCB 50 sodium potassium calcium 50 phosphorous nitrogen 50 trace amounts 50 glazed pottery 50 biotite 50 molybdenum Mo 50 brominated flame retardant 50 PGEs 50 dibutyl phthalate DBP 50 anomalous bismuth 50 Pyrite mineralization 50 Mercaptan 50 haloacetic acid 50 europium 50 metallic oxides 50 Endocrine disruptors 50 potassium carbonate 50 #ppb [003] 50 Perchlorate contamination 50 manganese molybdenum 50 formaldehyde toluene 50 estrogenic chemicals 50 Sodium dichromate 50 para dichlorobenzene 50 eicosapentaenoic acid 50 Hydrogen Sulfide 50 inorganic mercury 50 rotten egg smelling 50 bio accumulative 50 Rhenium Re 50 harmful chemicals 50 microcystin 50 polycyclic aromatic hydrocarbons PAH 50 chromium chloride 50 phosphine 50 methane nitrous oxide hydrofluorocarbons 50 Sulphur dioxide 50 ppm arsenic 50 beryllium dust 50 arsenate 50 nitrate ammonia 50 nitrate nitrite 50 nitrates 50 endocrine disrupting chemicals 50 Trihalomethanes 50 estrogenic compounds 50 bismuth oxychloride 50 copper nickel cobalt 50 particulate matter sulfur dioxide 50 ppm molybdenum 50 carbon dioxide nitrogen oxide 50 Ionizing radiation 50 Oxidized 50 Ozone disinfection produces 50 Fine particulates 50 chlorinated compounds 50 trichlorethylene 50 alunite 50 Stachybotrys chartarum 50 Fine particulate 50 silver dental fillings 50 Heme iron 50 nitrogen dioxide carbon monoxide 50 nickel tin 50 chrome diopsides 50 strontium 50 dioxin concentrations 50 diethyl 50 Dysprosium 50 strontium cesium 50 spokeswoman Tisha Petteway 50 phosphorite 50 tetroxide 50 acrolein 50 vanadium molybdenum 50 nitrogen oxides sulfur dioxide 50 hydrofluoric acids 50 chlorine bleaches 50 produce briny wastewater 50 carcinogenic fibers 50 corrosive flammable 50 silicate rocks 50 oxalates 50 benzene nitrobenzene 50 acid DHA 50 airborne toxins 50 telluride 50 manganese magnesium 50 Nitrate contamination 50 tailing piles 50 malachite azurite 50 phthalate esters 50 remote blackwater streams 49 tributyl tin 49 leachability 49 chemical malachite green 49 Phenols 49 Domoic acid neurotoxin 49 nickel cobalt copper 49 potassium magnesium 49 fatty acids eicosapentaenoic acid 49 Bike Flair Accessory 49 particulates sulfur dioxide 49 sulfur dioxide nitrogen 49 carcinogenic toxins 49 sulfate 49 Atomic Absorption 49 aluminosilicate clay 49 hornblende 49 Methylmercury 49 PBDE chemicals 49 pantothenic acid 49 carcinogenic substance 49 tinted crimson 49 organochlorine compounds 49 docosahexaenoic 49 ppm Mo 49 faecal coliform 49 -Expandable Memory 49 Nitrogen Oxides NOx 49 Pigment containing 49 #,# butadiene 49 2 butoxyethanol 49 spodumene rich 49 #,# dichloroethane 49 sodium sulfite 49 Zeolites 49 noble gases 49 gold arsenic antimony 49 U Th 49 dental amalgam fillings 49 #,# Dioxane 49 radioactive substances 49 #.#ppm [001] 49 perfluorochemicals 49 zinc manganese 49 Halogenated 49 iron magnesium potassium 49 sodium potassium magnesium 49 toxic byproducts 49 Sediments 49 sulfur dioxide particulate matter 49 Methane CH4 49 crocidolite 49 invisible odorless tasteless 49 nonradioactive 49 benzoates 49 particulate matter PM#.# 49 Pd Pt 49 magnesium stearate 49 specular hematite 49 hydrochloric acid HCl 49 Brominated flame retardants 49 scrubber sludge 49 Europium 49 mercury hexavalent chromium polybrominated 49 pollutes waterways 49 monazite 49 Reference Dose 49 mirex 49 fecal indicator 49 bioaccumulation 49 hosted Ghanzi Copper 49 degrease metal parts 49 phenanthrene 49 essential micronutrient 49 sulfur dioxide nitrogen oxide 49 galena 49 oxidized mercury 49 tourmaline veins 49 dichlorobenzene 49 hematite magnetite 49 fiber vitamins minerals 49 zinc 49 carcinogenic PCBs 49 plagioclase 49 Photocatalytic 49 ug L 49 nitrates nitrites 49 radioactive nuclides 49 dysprosium oxide 49 Diesel exhaust 49 Anomalous values 49 toluene xylene 49 allanite 49 respiratory irritant 49 nickel zinc 49 Humic 49 arsenic strychnine 49 pathogenic micro organisms 49 neuro toxin 49 e coli bacteria 49 Carcinogenic 49 Kulu copper 49 ilmenites 49 #,#,#,# p 49 bastnaesite 49 Enterococci 49 poisonous chemicals 49 perfluorooctane sulfonate 49 DBPs 49 calcium sulfate component 49 benzene 49 xenoestrogens 49 soluble salts 49 copper cobalt nickel 49 dioxide 49 quartz feldspar 49 PBDE flame retardants 49 Trichloroethylene TCE 49 Tritium occurs naturally 49 Zn Cu 49 manganese potassium 49 containing denture cream 49 Rare Earth Elements REE 49 inorganic arsenic 49 pollutes streams 49 potent neurotoxin 49 naturally occurring isotope 49 chlorite altered 49 polychlorinated biphenyls 49 fishing sinkers 49 organotins 49 copper Cu 49 chalcopyrite sphalerite 49 gases vapors 49 compounds metabolize lipid 49 disseminated sulfide 49 inorganic compounds 49 covellite 49 carcinogenic dioxins 49 Nitrogen NOx 49 polyester resins alkyd resins 49 #.#g t silver [001] 49 Au t 49 poly aromatic hydrocarbons 49 antimony Sb 49 dissolved salts 49 isotopic ratios 49 zirconium niobium 49 tin alloy 49 adularia 49 oxide hydrofluorocarbons perfluorocarbons 49 BHA BHT 49 desulfurization gypsum 49 healthiest seafoods around 49 alpha emitters 49 naturally occurring radioactivity 49 unburned hydrocarbons carbon monoxide 49 sylvite 49 prenatal exposures 49 JM Reef 49 bloodroot shark cartilage 49 Sodium silicate 49 dichloroethane 49 neodymium praseodymium 49 sulfurated hydrogen 48 oxidizing salt 48 chalcopyrite bornite 48 tasteless odorless 48 mercury potent neurotoxin 48 #ppb [001] 48 potash alumina 48 quartz calcite 48 g t Pt 48 potassium calcium magnesium 48 potassium sodium 48 anomalous Au 48 sodium hydrochloride 48 endocrine disrupting chemicals EDCs 48 fine particulates 48 Contaminates 48 Fecal Coliform 48 #,# dichlorobenzene 48 tungsten tin 48 Coliform 48 AP IMPACT Cadmium 48 Nitrogen Dioxide 48 sulphide minerals 48 reanalyzed using 48 ozone nitrogen dioxide 48 niobate 48 Radon naturally occurring 48 inorganics 48 fragrances dyes 48 Ta#O# 48 chloritic 48 Arsenopyrite 48 contaminate aquifers 48 tailings piles 48 ppm lithium 48 copper zinc 48 groundwaters 48 antimony trioxide 48 Y#O# 48 acids alkalis 48 REE bearing 48 degreasing solvents 48 RfD 48 PBDEs polybrominated diphenyl ethers 48 dyes preservatives 48 dissolved oxygen DO 48 B vitamins thiamin 48 phyto oestrogens 48 paraffins 48 mercury sulfur dioxide 48 Sulfide 48 Acrolein 48 polycyclic aromatic hydrocarbons PAHs 48 KINSHASA Congo Fabulous 48 Anomalous copper 48 colorless odorless tasteless 48 lung irritant 48 carbonyls 48 manganese cobalt 48 sulphidic 48 Polychlorinated biphenyls PCBs 48 + Pd + 48 heavily polluted 48 sporadically emitting 48 transuranic elements 48 carnotite 48 particulate matter soot 48 H#SO# 48 enterococci bacteria 48 Monazite 48 taconite tailings 48 sulfate concentrations 48 Inhaling asbestos fibers 48 sodium potassium chloride 48 Benzo pyrene 48 excrete methane 48 flavinoids 48 odorless colorless tasteless 48 goethite hematite 48 sulfuric acid mist 48 colorless flammable 48 coliforms 48 Tobacco Smoke 48 mercury emitted 48 elemental chlorine 48 #.# ppm cobalt 48 nuclides 48 respirable 48 Phthalate 48 tritium contaminated 48 unlined ponds 48 pesticides solvents 48 copper sulfides 48 pollutant 48 airborne pollutant 48 metalloid 48 contaminating groundwater 48 stockwork veins 48 coli bacteria 48 Lanthanum 48 sulfur gases 48 methyl tert butyl ether 48 particulate soot 48 benzoate preservatives 48 trihalomethanes 48 Sodium Potassium 48 paints paint thinners 48 Nitrogen dioxide 48 carbonyl sulfide 48 quartz stringers 48 Carcinogens 48 benzenes 48 phosphorus nitrogen 48 Sulfides 48 automobile tailpipes 48 cobalt sulphates 48 Thicknesses 48 organochlorine 48 PM#.# particles 48 VOC volatile 48 Hydrochloric 48 Perchlorates 48 osmium 48 orthophosphate 48 Niobium Nb 48 galena sphalerite 48 anomalous zinc 48 algal toxin 48 Magnesium Oxide 48 synthetic estrogens 48 radioactive 48 bornite 48 quartz pyrite 48 specularite 48 solvent toluene 48 Radioactive substances 48 hormone disrupting 48 Concentrations 48 Palladium Pd 48 radioactive radium 48 pesticides flame retardants 48 solvents 48 selenide 48 radium 48 Pollutants 48 Dioxins 48 ferrous sulphate 48 Ag Cu Pb 48 folate vitamin B6 48 calcium phosphorus magnesium 48 Coliform bacteria 48 polybrominated biphenyls 48 fluorapatite 48 Methylene chloride 48 carcinogens benzene 48 molybdenite MoS2 48 endocrine disruptors 48 naturally occurring radon 48 Sodium hydroxide 48 sulfates 48 Fecal bacteria 48 hormonally active 48 anomalous antimony 48 hazardous substances 48 Chemical Hazards 48 radon 48 plastics detergents 48 potassium calcium 48 Particulates 48 methylene chloride 48 fungal toxins 48 Zinc Zn 48 chlorinated hydrocarbons 48 chlorine bromine 48 copper arsenate 48 sulfide nanoparticles 48 DEHA 48 reproductive toxicants 48 olivine macrocrysts 48 carcinogenic 48 Tiny particles 48 Oxalate 48 hydrochloric acids 48 erionite 48 metal degreasing 48 transferrin saturation 48 Chrysotile asbestos 48 ppm bismuth 48 ginkgo pills 48 ozone nitrogen oxides 48 hydrogen cyanide HCN 47 nitrogen oxides NOx emissions 47 pollute rivers 47 toxic hydrogen sulfide 47 xylenes 47 PBDE 47 Residues 47 calomel 47 amalgam dental fillings 47 quaternary ammonium compounds 47 anomalous arsenic 47 aluminum silicate 47 polycyclic aromatic hydrocarbon 47 ppm Nb 47 nitrogen phosphorous 47 ppm Cu 47 gallium indium 47 sulfidation 47 sulfur oxide 47 ALA alpha linolenic 47 xenoliths 47 Dental sealants 47 REE deposits 47 carbonate veins 47 potentially carcinogenic 47 Methylene Chloride