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(Click for frequent words.) 58 Warwick RI Purchased 56 professor Jeff Weidenhamer 50 wipe wetted 46 spiral bindings 45 AP IMPACT Cadmium 45 cadmium 45 metal spiral bindings 44 baby teethers 43 Urine samples 43 Hamco bibs 43 XRF analyzer 42 LeadCheck 42 Rhode Island Novelty 42 melamine contaminant 42 substituting cadmium 41 roll cyanide leach 41 chemical perfluorooctanoic acid 41 LeadCheck Swabs 41 polybrominated diphenyl ethers PBDEs 41 Robbie Ducky 41 sparkling charm bracelets 40 X ray fluorescence 40 toxic diethylene glycol 40 Chemex Labs 40 carcinogen cadmium 40 Cadmium 40 Schylling Associates 40 Weidenhamer lab 39 metal cadmium 39 circular pendant 39 Tissue samples 39 thallium toxic 39 #,# Dioxane 39 diethylene glycol DEG 39 jewelry Weidenhamer 39 ALS Chemex analytical 39 Hazard Surface 39 Swastika Laboratories 39 perfluorooctanoic acid PFOA 39 Hair follicle 39 PVC shower curtains 39 chemical diethylene glycol 39 chromium polybrominated biphenyl PBB 39 Duplicate samples 38 chlorine byproducts 38 picocurie 38 accredited laboratory 38 Laboratoire Expert 38 phthalates chemicals 38 arsenic cadmium mercury 38 preservative sulfur dioxide 38 tetrachloroethene 38 movie themed pendants 38 Saliva samples 38 polybrominated diphenyl ether PBDE 38 radionuclide detection 38 remote blackwater streams 38 baby bibs 38 Techni Lab SGB Abitibi 38 Kool Toyz 38 charm bracelets 38 bracelet charms 38 chemical melamine 38 Soil samples 37 Activation Labs Actlabs 37 polycarbonate bottles 37 tetrachlorethylene 37 Spidey Signal 37 Sample pulps 37 chemical #,# butanediol 37 Shrek themed 37 vinyl lunchboxes 37 arsenic chromium 37 ALS Chemex laboratories 37 McClelland Laboratories 37 ALS Chemex Assay 37 shiny pendants 37 Geochemical assays 37 gravimetric method 37 Moose Enterprises 37 Bacillus cereus 37 stool sample 37 Frog necklaces 37 cadmium chromium 37 bromate 37 Laboratoire Expert Inc. 37 tetrachlorethylene PCE 37 Accurassay 37 dibutyl phthalate DBP 37 ACME Analytical Laboratories 37 listeria monocytogenes bacteria 37 Allreds Design 37 X ray fluorescence XRF 37 themed pendants 37 chemical bisphenol A. 37 childrens toys 37 Weidenhamer 37 pacifier clips 37 aflatoxin naturally occurring 37 permanganate chemical 36 Imaginarium Wooden Coloring Cases 36 gram subsample 36 barium chromium 36 Children Divine Inspiration 36 tetrachloroethene PCE 36 PCBs pesticides 36 cadmium contamination 36 chromium nickel 36 BPA leaching 36 detectable BPA 36 Barrilito 36 Eastern Analytical Laboratory 36 cadmium mercury hexavalent 36 perfluorooctane sulfonate PFOS 36 Methylene Chloride 36 analyze geo chem 36 Hanwei eggs 36 PBDEs polybrominated diphenyl ethers 36 antimony 36 Hexavalent chromium 36 microprobe analysis 36 Sodium cyanide 36 polybrominated diphenyl ether 36 ppm zinc 36 Accurassay Laboratories 36 Polymet Labs 36 Activation Laboratories Ltd 36 HealthyStuff.org 36 polycarbonate plastic bottles 36 Skin prick 36 samples 36 benzene carcinogen 36 Tarkwa Ghana 36 Abilab Burkina SARL 36 Assay Labs 36 leaded paint 36 Charm Bracelets 36 ICP AES analysis 36 ExperTox 36 Sample Preparation 36 Swabs 36 mercury selenium 36 chromium mercury 36 melamine 36 Fecal coliform 36 nonresponsive comas commission 36 undeclared allergens 36 stool specimen 35 barium 35 arsenic cadmium chromium 35 polyvinyl chloride plastic 35 Salmonella Enteritidis SE 35 TOBY NYC 35 perfluorinated compounds 35 Techni lab 35 Vitamin Cottage peanut butter 35 SGS Minerals Services 35 SGS Mineral Services 35 ug dL 35 phthalate metabolites 35 cadmium leached 35 L' Oreal Colour Riche 35 arsenic cyanide 35 chromium cadmium 35 canned albacore tuna 35 suspected carcinogen 35 formaldehyde toluene 35 Infantino slings 35 dioxin PCBs 35 Hip Charm 35 arsenic beryllium 35 diphenyl ethers 35 vinyl bibs 35 mcg dl 35 Sarge toy 35 para dichlorobenzene 35 duplicate samples 35 enterococcus 35 arsenic mercury 35 arsenide 35 variography 35 nickel matte electrolytic 35 anomalous arsenic antimony 35 chromium VI 35 flip flop bracelet charms 35 methylene chloride 35 Vita Breath 35 mercury arsenic 35 organotins 35 AGAT Laboratories 35 http:/sample.microchip.com 35 polybrominated 35 SGS Minerals 35 tetroxide 35 barium cadmium 35 ActLabs 35 sodium peroxide fusion 35 Aqua Regia digestion 35 Phthalate 35 arsenic barium 35 industrial chemical melamine 35 micron sieve 35 dental amalgam fillings 35 coumarin 35 polybrominated diphenyl ethers 35 E coli bacteria 35 cadmium electroplated utensils 35 Fire Assay 35 nickel hydroxide 35 contain Sulfoaildenafil 35 Mint Fluoride Paste 35 listeria monocytogenes 35 Landis urine sample 35 Atomic Absorption 35 kombucha brands 35 pthalates 34 glazed pottery 34 strontium 34 Assayers Canada 34 arsenic antimony mercury 34 Bacillus anthracis spores 34 Ugly Teeth 34 coliforms 34 sodium dichromate 34 inorganic arsenic 34 μg dL 34 pesticide metabolites 34 faecal coliforms 34 polychlorinated vinyls 34 Oxybenzone 34 lunchboxes 34 cadmium arsenic 34 sodium azide common 34 Highly anomalous 34 Methyl mercury 34 CH 1C 34 titanium dioxide nanoparticles 34 arsenic cadmium copper 34 per decilitre 34 BLLs 34 controversial chemical bisphenol 34 carcinogenic polycyclic aromatic hydrocarbons 34 Enterococci bacteria 34 radioactive Iodine 34 Ni sulphide 34 carcinogen benzene 34 Sanlu infant formula 34 fluorotelomer 34 arsenic benzene 34 algal toxins 34 antimony arsenic 34 manganese cobalt 34 Knaupf Plasterboard Tianjin 34 canned albacore 34 ALS CHEMEX 34 Preliminary metallurgical 34 chlorinated Tris 34 Infant formula 34 Assay Laboratory 34 deadliest germs 34 reactive carbonyls 34 Enterococcus 34 SGS Laboratory 34 Listeria monocytogenes bacteria 34 ALS Minerals 34 Teflon coated cookware 34 trichloroethene 34 www.microchipdirect.com 34 securely packaged batched 34 Aqua Dots beads 34 glycol ether 34 Chlordane 34 Bike Flair Accessory 34 arsenic manganese 34 coli bacteria 34 SGS Geosol 34 fecal samples 34 TSL Laboratories 34 containing triclosan 33 TA Creations 33 metals alloys 33 SGS Laboratories 33 costume jewelry 33 mercury concentrations 33 Inspectorate Laboratories 33 Mr. Squiggles 33 sulfated chondroitin sulfate 33 White Rabbit Creamy 33 Nutrient Data 33 Lakefield Ontario 33 urinary concentrations 33 Specimens 33 XRF analyzes 33 trihalomethanes THMs 33 carrying interstellar dust 33 Mineralized intervals 33 Analytical Protocols 33 SGS Lakefield 33 mercury chromium 33 cadmium mercury 33 Homogeneous Materials 33 phthalates 33 arsenic cadmium 33 leachable 33 Swastika Laboratories Ltd. 33 Samples 33 multielement 33 chemical perchlorate 33 Saliva Collection 33 caustic fusion diamond 33 aromatic amine 33 SGS laboratories 33 Elevated arsenic 33 Pulps 33 Bourlamaque Assay Laboratories 33 phthalate 33 mcg dL 33 cyanide arsenic 33 Genalysis Laboratory Services 33 lithium metaborate fusion 33 disinfectant byproducts 33 xMAP 33 SGS Lakefield Laboratories 33 tissue microarrays 33 chromium arsenic 33 NASDAQ RCRC 33 ACME Laboratories Vancouver 33 Xinqiang River 33 zinc cadmium 33 mercury arsenic cadmium 33 indoor radon 33 viagra uk viagra 33 Swastika Ontario 33 arsenic bismuth 33 powdered infant formula 33 diglycol 33 Drill cores 33 Testwork 33 QRT PCR 33 trichloroethene TCE 33 Stool samples 33 Abilab 33 copper alloys 33 dioxin Zimpfer 33 Senior Geochemist 33 hexavalent chromium polybrominated biphenyls 33 formalin fixed 33 Shrek glasses 33 Amdel 33 Stardust comet 33 organophosphate pesticide 33 Handmade pottery 33 gossan mineralization 33 downhole radiometric logging 33 Bromate 33 haloacetic acids 32 mercury cadmium 32 perfluorooctanoic acid 32 pesticide methamidophos 32 cosmetics sunscreens 32 CKI Toys 32 Landis urine samples 32 methamidophos 32 acid soluble 32 bacteria listeria monocytogenes 32 Alaska Assay Laboratories 32 preservative sodium benzoate 32 element ICP analysis 32 petrographic analysis 32 sample 32 HBCD 32 uranophane 32 Acme Analytical 32 toothpastes 32 Column leach 32 polyaromatic hydrocarbons 32 hazardous solvents 32 bioaerosol 32 potassic altered porphyry 32 dishwashing detergent 32 infant formulas 32 Domoic acid 32 crocidolite 32 Toxicology tests 32 ACTLABS 32 ICP AES Method 32 contain diethylene glycol 32 trichloroethane 32 Microdiamond 32 kimberlite phases 32 bracelet charms sold 32 Polychlorinated biphenyls 32 metal degreasing 32 cadmium elevating 32 trichlorethylene TCE 32 SGS Lakefield Research 32 Inorganic arsenic 32 biomonitoring studies 32 White Rabbit candies 32 Dr. Giles Peatfield 32 enterococcus bacteria 32 ACME Labs 32 XRF analysis 32 cadmium barium 32 SGS Labs 32 radioiodine 32 outcropping quartz 32 stachybotrys 32 thallium 32 indium gallium 32 Exoscan 32 ICP AES technique 32 beryllium dust 32 plastic hardener 32 aliquots 32 formaldehyde 32 Teflon cookware 32 Federal Hazardous Substances 32 arsenic 32 brominated compounds 32 Julie Vallese spokeswoman 32 isotope dilution 32 Robyn Ziegler spokeswoman 32 flotation tailings 32 arsenic selenium 32 ppm Pb 32 dioxane 32 perfluorochemicals 32 Elemental mercury 32 carcinogenic benzene 32 reassayed 32 element ICP 32 Beta Analytic 32 cadmium tainted 32 Tansy O'Connor Parsons 32 PFGE 32 amalgam fillings 32 Wenping township 32 melamine chemical 32 heparin batches 32 contaminant 32 ACME laboratories 32 flame retardant chemicals 32 Enterococcus bacteria 32 total coliforms 32 adularia 32 leaded solder 32 stool specimens 32 gms tonne silver 32 bromine chlorine 32 synthetic testosterone indicating 32 lead cadmium arsenic 32 AMMTEC 32 stain repellents 32 enterococci bacteria 31 aromatic amines 31 benzene ethylbenzene 31 Ste Germaine 31 HealthyStuff.org came 31 Geochemical samples 31 underground adits 31 Lotte Cream Cheese 31 saxitoxin 31 chemical perfluorooctanoic acid PFOA 31 ug dl 31 Genalysis 31 perfluorooctane sulfonate 31 nasal swabs 31 toxic chemical melamine 31 Lateral Flow 31 radioactive radium 31 DINP 31 Assaying 31 Magnetix sets 31 Devices Blood Glucose 31 biopsy specimens 31 mineralogical analysis 31 undeclared allergen wheat 31 urine specimens 31 groundwater contaminant 31 beryllium cadmium 31 biphenyls 31 gram pulps 31 SWAN Repository 31 elevated PBDE 31 manganese zinc 31 NIV Pune 31 gravity geophysical surveys 31 metallic oxides 31 assay fusion 31 coli O# 31 BPA phthalates 31 ALS Chemex Laboratory 31 Testing 31 microcystin 31 #,# dioxane 31 dichlorvos 31 necklaces bracelets rings 31 AspirinWorks test 31 ppm molybdenum 31 nasopharyngeal specimens 31 perfluoroalkyl acids 31 Inspectorate Labs 31 cyclamates 31 Metcon 31 microprobe 31 pin LFCSP 31 #,#,# tribromoanisole chemical 31 carat gem quality 31 DDT dieldrin 31 formaldehyde preservative commonly 31 Shrek glassware 31 charm bracelet 31 portable XRF 31 magnesium sodium potassium 31 Activation Laboratories 31 Kappes Cassiday 31 magmatic kimberlite 31 pin PBGA 31 HealthyToys.org 31 fluorimetry 31 chemical leaches 31 cocaine alkaloid 31 artificial sweetener saccharin 31 NNAL 31 ug l 31 antibiotic chloramphenicol 31 Clostridium perfringens 31 drywall emits 31 chemical Bisphenol 31 organochlorine pesticides 31 mercury dioxins 31 City Jinmao Daily 31 Dechlorane Plus 31 pin PDIP 31 reusable grocery 31 ACTLABS preparation laboratory 31 polychlorinated biphenyls 31 fecal coliforms 31 swab samples 31 Flame retardants 31 WDD# 31 ppb Pt 31 MtBE 31 patulin 31 preliminary metallurgical testwork 31 diethylene glycol 31 McDonald's labeled 31 talus samples 31 fortify PVC 31 #.#ppm [001] 31 Anomalous values 31 perfluorinated chemicals 31 Bourlamaque 31 faecal coliform 31 fecal coliform bacteria 31 PVC phthalates 31 ICP analyzes 31 Guelph detected aminopterin 31 nitrofurans 31 databanks contain 30 Procleix 30 cadmium hexavalent chromium 30 ALS Chemex preparation 30 Coliform bacteria 30 amalgam dental fillings 30 Mutation Detection 30 spokeswoman Julie Vallese 30 Acme Laboratories 30 melamine tableware 30 purity potency 30 PCBs DDT 30 microchipDIRECT 30 SmartChip Cycler 30 ALS Chemex labs 30 PBDE chemicals 30 Hazardous Substances Directive 30 Cyanidation 30 Toxic chemicals 30 dickite 30 Wisconsin Veterinary Diagnostic 30 Activation Labs 30 trace amounts 30 hormone disruptor 30 DEHA 30 SALES TAX Pennsylvania 30 polychlorinated biphenyl PCB 30 e coli bacteria 30 mercury Hg 30 cadmium Cd 30 melamine contaminated 30 pin QFP 30 chemical bisphenol 30 NATA accredited 30 gallium germanium 30 powerful neurotoxin 30 fluorimetry partial digestion 30 ppm Mo 30 ATtiny# 30 TSL Labs 30 dental amalgam 30 nonstick cookware 30 total coliform 30 containing DEG 30 bacteriologically 30 mercury vapor 30 PDBEs 30 Retesting 30 cola drinks 30 TQFP packages 30 pin SSOP package 30 Springdale Newfoundland 30 carbon tetrachloride 30 Gas Chromatography 30 serum plasma 30 diethylene glycol chemical 30 TTHMs 30 toxic flame retardants 30 HAAs 30 stool samples 30 docosahexaenoic acid DHA 30 Jewelry Recalled 30 silica pyrite 30 brominated flame retardant 30 chemical flame retardants 30 DEHP 30 dibutyl phthalate 30 Kau# 30 Dae Yeon Industries 30 phthalate DEHP 30 Aqua Dots toy 30 HMPs 30 organochlorine compounds 30 cyanide soluble 30 tar nicotine 30 Reference Materials 30 polychlorinated biphenyl 30 cell lysate 30 PFOAs 30 urea formaldehyde 30 Barbie doll accessories 30 Hydrogen Sulfide H2S 30 tiny magnets 30 substitute cadmium antimony 30 blood thinner heparin 30 selenomethionine 30 Rhenium Re 30 ceramic dielectric 30 Vials containing 30 microcystins 30 PFCAs 30 director Stanley Suboleski 30 heptachlor 30 deca BDE 30 fishing sinkers 30 Transworld Laboratories 30 Activation Laboratories Ltd. 30 tungsten alloys 30 nasopharyngeal swab 30 organochlorine pesticide 30 phthalate esters 30 Peanut Butter Crackers 30 Diethylene Glycol 30 silver dental fillings 30 geophysical logs 30 DDD# 29 Volatile Organic Compounds VOCs 29 % CuT 29 sputum specimens 29 oz Au t 29 PCBs mercury 29 stress hormone corticosterone 29 ALS Chemex Labs 29 fusion XRF 29 mercury barium 29 gms tonne gold 29 radioactive isotope iodine 29 Shopper Events specializes 29 ALS Chemex Laboratories 29 Pesticide Residue 29 cadmium escapes 29 mercury PCBs 29 NQ diameter drill 29 kimberlite batches 29 lysate 29 bacteria enterococci 29 Throat swabs 29 radioactive strontium 29 PBBs 29 prenatal exposures 29 potassium feldspar 29 ReNu MultiPlus solution 29 swabs 29 Parabens 29 plastic softeners 29 ISO IEC #:# accredited 29 oxidizing salt 29 ALS Chemex Lab 29 chemical C8 29 Schylling 29 coarse rejects 29 Thor Vein 29 sawn NQ sized 29 nasopharyngeal swabs 29 coliform bacteria 29 mercury chromium cadmium 29 zinc Zn 29 maximum contaminant 29 Contaminated soil 29 hundred tonnes cpht 29 macrodiamond 29 #,# DCB 29 samplings 29 denture creams 29 fluorotelomers 29 fecal bacteria 29 serum samples 29 Diacetyl 29 bioaccumulative 29 chemical bromate 29 sample pulps 29 Accurassay Labs 29 milligrams 29 8 pin SOIC 29 contaminants 29 Mach Zehnder Modulator MZM 29 carcinogen dioxin 29 Malachite green 29 ppm arsenic 29 trichlorethylene 29 potent neurotoxin 29 zinc indium 29 www.agilent.com chem 29 rat poisons 29 pin BGA packages 29 shampoos lotions 29 ozone particulates 29 LQFP# [002] 29 strontium carbonate 29 metallic assay 29 blanks duplicates 29 geochemical assay 29 pentachlorophenol 29 Magnetix toy 29 element ICP OES 29 % TCu 29 galena pyrite 29 basal till 29 -#:# GMT/# 29 dichloroethene 29 Sampling Assaying 29 μg g 29 PFOA perfluorooctanoic acid 29 Salmonella bacteria 29 Polycyclic Aromatic Hydrocarbons 29 Early Joli Fou 29 carcinogens mutagens 29 #CBN 29 tooth fillings 29 ALS CHEMEX laboratory 29 lithogeochemical samples 29 Sanlu powdered milk 29 Baby Einstein toys 29 fuchsite 29 Cr#O# 29 haloacetic acid 29 -Keichi 29 mercury vapors 29 NITON 29 Geoanalitica 29 tattoo inks 29 Marie Callender cheesy 29 phthalate plasticizers 29 enterococci 29 arsenic concentrations 29 automotive catalytic converters 29 trihalomethane 29 micrograms 29 Table de Concertation 29 chromate 29 choking hazards 29 Reference Material 29 dissolved solids 28 Johnson Baby Shampoo 28 counterfeit Colgate toothpaste 28 Formalin fixed 28 gr t Au 28 % Fe#O# 28 PROCLEIX 28 ppm Au 28 ethylmercury 28 #g aliquots 28 harmful chemicals 28 cadmium selenium 28 epidote 28 holes #RB# 28 carbon disulfide 28 perfluorooctanoate PFOA 28 methyl chloride 28 ALS CHEMEX Laboratories 28 alunite 28 zipper pulls 28 gallon pails 28 Activation Laboratories Actlabs 28 GBI Crime Lab 28 pentaBDE 28 estrogen mimicking 28 1ml 28 PBDE 28 oz ton Ag 28 eluent 28 mercury 28 tiny detachable magnets 28 pyrite marcasite 28 orthophosphate 28 antibiotic residues 28 saliva samples 28 tissue samples 28 #g t [001] 28 Significant assay 28 bisphenol A. 28 gram aliquots 28 ciguatera fish 28 flame retardants PBDEs 28 polychlorinated 28 metallurgical testwork 28 molybdenite MoS2 28 #.#g t Ag [005] 28 fecal chloroform 28 radium 28 methyl mercury 28 brominated flame 28 HG Sulphide zone 28 module MCM 28 CPSC 28 Paylean 28 Hexavalent Chromium 28 nonhazardous 28 pin TQFP packages 28 Acme Labs 28 endocrine disrupter 28 preservative thiomersal 28 ACME Laboratory 28 metallurgical testing 28 Melamine 28 scintillometers 28 ALS Chemex Prep 28 ppm Ta#O# 28 http:/www.micrel.com/ProductList.do 28 microdiamonds 28 Acme Analytical Labs 28 synthetic musks 28 perfluorochemicals PFCs 28 g t Ta#O# 28 inorganic mercury 28 TCE vapors 28 Swastika Labs 28 #gram 28 reproductive toxins 28 outgas 28 azo dyes 28 petrography 28 nitrate 28 Batches 28 Bulk density 28 PCV1 28 petrographic 28 Tank Engine toys 28 saccharin 28 butter flavorings 28 potent carcinogen 28 Ce#O# 28 ME MS# 28 kimberlite breccia 28 Acme Analytical Laboratories 28 Anomalous uranium 28 niobium oxide 28 tainted heparin 28 chromium 28 airborne asbestos fibers 28 website www.inter citic.com 28 chlordane 28 nickel cadmium 28 flotation testwork 28 ppb Pd 28 serologically 28 faecal samples 28 RfD 28 reproductive toxicants 28 ALS Laboratories 28 arsenic antimony 28 TBBPA 28 potassium phosphate salts 28 tonnages grades 28 necklaces 28 toys 28 harmful contaminants 28 XR#V# [002] 28 ZF# 27 dental amalgams 27 Pseudomonas aeruginosa bacteria 27 Bindeez beads 27 BPA bisphenol 27 sampling 27 Geochemical analyzes 27 Toxic Chemicals 27 Earthly microbes 27 disinfection byproducts 27 DEBD 27 cyclamate 27 ACME Laboratories Lima Peru 27 Chelation removes heavy 27 t Ag 27 Activity Tote 27 Listeria bacteria 27 Heap leach 27 Caesium 27 O'Prey P.Geo 27 Au t 27 Genalysis Laboratories 27 carcinogenic chemicals 27 radioactive substance 27 pulp metallic 27 PFOS 27 polychlorinated biphenyls PCBs 27 outcrop samples 27 gm tonne 27 infant formula 27 Council Geoanalytical Laboratories 27 persistent bio accumulative 27 Elevated contaminant levels 27 Au Ag Cu Zn 27 decaBDE 27 jewelry 27 endocrine disrupting compounds 27 Assay Laboratories 27 trivalent chromium 27 Frozen turkeys 27 ammonium perfluorooctanoate 27 metalloid 27 soldered joints 27 Radioactive cesium 27 TSSOP# 27 ppb 27 vat leach 27 PCBs polychlorinated biphenyls 27 contain aflatoxin 27 endotoxins 27 Loring Laboratories 27 welding rods 27 Vallese 27 Fashion Jewelry 27 nitrofuran 27 ALS Laboratory 27 lipsticks 27 sediment samples 27 additives 27 chalcopyrite bornite 27 americium 27 BPA leaches 27 bacterial contamination 27 Contaminants 27 Nasal swabs 27 artificial colorings 27 chloramine 27 dieldrin 27 becquerels 27 PFBA 27 benzo pyrene 27 electrodeposited 27 supernatant 27 palladium Pd 27 salmonella 27 Actlabs 27 magnesium carbonate 27 insecticide endosulfan 27 contamination 27 Copper Cu 27 Kahuna kimberlite 27 Significant intercepts 27 mineral apatite 27 Triclosan 27 PCBs dioxins 27 TTHM 27 pin QFN packages 27 PAH concentrations 27 http:/www.microchip.com/get/# 27 nasal swab samples 27 Soil geochemical 27 microdiamond results 27 persistent bioaccumulative 27 ML#Q# 27 contaminated wheat gluten 27 ppm 27 perchlorethylene 27 necklaces bracelets 27 TaqMan Gene Expression Assays 27 biphenyl 27 Ag Pb