Related by context. Frequent words. (Click for all words.) 66 arsenic mercury 61 potassium magnesium 60 calcium magnesium 58 manganese oxide 57 manganese 57 mercury arsenic 57 pantothenic acid 56 Sulfate 56 inorganic compounds 56 Ilmenite 55 Hexavalent chromium 55 dissolved solids 55 PGEs 55 iron oxides 54 THMs 54 sludges 54 chromium 54 carbon disulfide 54 cadmium mercury 54 chlorinated solvents 54 total dissolved solids 54 Sulfide 54 carbon tetrachloride 53 arsenic 53 sulfide minerals 53 zinc Zn 53 Ammonium 53 zinc cadmium 53 potassium calcium 53 pathfinder elements 53 sulphide minerals 53 naturally occurring mineral 53 scheelite 52 arsenic cadmium 52 ZrO2 52 goethite 52 organochlorines 52 tremolite 52 Near Surface 52 ammonia nitrogen 52 benzene toluene 52 calcium sulfate 52 sulphide deposits 52 sulphates 52 phosphine 52 tailings dams 52 Tellurium 52 Kuan Yin Taiwan 52 cobalt nickel 52 mercury cadmium 51 biotite 51 disinfection byproducts 51 barium 51 dioxide 51 minerals 51 kaolinite 51 fluorides 51 jarosite 51 Barium 51 sulphate 51 Hydrogen sulfide 51 ferric 51 PCBs polychlorinated biphenyls 51 oxidise 50 benzoic acid 50 copper Cu 50 arsenate 50 monazite 50 leachable 50 mineral salts 50 #ppb [003] 50 nickel copper cobalt 50 chlorides 50 Volatile organic compounds 50 copper zinc 50 MoS2 49 polychlorinated biphenyls PCBs 49 mg l 49 sulfides 49 tannic acid 49 osmium 49 tetrahedrite 49 Acids 49 Oxides 49 platinum palladium rhodium 49 Niobium 49 siliceous 49 Nitrates 49 salts 49 Arsenic 49 hydroxide 49 skarns 49 europium 49 uraninite 49 Al#O# 49 Sulphate 49 silicates 49 Reverse osmosis 49 aromatic hydrocarbons 49 tartaric acid 49 Bentonite