GROUP:
Adult Minority Leader Report
health & safety concerns: |
chemicals found | ||
on average | indivi- dual range |
entire group | |
Brain and nervous system | 29 | 23-35 | 36 |
Reproduction and fertility | 28 | 22-34 | 35 |
Birth defects and developmental delays | 3 | 3-3 | 3 |
Endocrine system | 3 | 2-3 | 3 |
Cancer | 2 | 2-2 | 2 |
Immune system (including sensitization and allergies) | 2 | 2-2 | 2 |
Hematologic (blood) system | 2 | 2-2 | 2 |
Chronic effects, general | 2 | 1-2 | 2 |
Group members:
(5 People)
Dr. Beverly Wright
Vivian Chang
Jennifer Hill-Kelley
Suzie Canales
Jean Salone
Locations:
Corpus Christi, TX
Green Bay, WI
New Orleans, LA
Oakland, CA
Group: Adult Minority Leader Report
Found 43-48 of 75 tested chemicals (5 participants)
The blood and urine of the "Adult Minority Leader Report" group contained 43-48 of 75 industrial compounds, pollutants and other chemicals tested, including chemicals linked to brain and nervous system toxicity, reproductive toxicity and fertility problems, and birth defects and developmental delays.
Summary of chemicals found in Adult Minority Leader Report
chemical family | level found in group | health effects | exposure routes |
Polybrominated diphenyl ethers (PBDEs) | 40% high 40% moderate 20% low | Reproduction and fertility, Brain and nervous system | Foam furniture, carpet padding, computers, televisions, contaminated house dust, food |
Perfluorochemicals (PFCs) | 40% high 60% low | Cancer, Birth defects and developmental delays, Endocrine system | Stain- and grease-proof coatings on food packaging, couches, carpets, pans |
Nitro- and polycylic- musks | 80% high 20% moderate | Endocrine system | Cosmetics, perfumes, cleaning agents, detergents, soaps |
Perchlorate | 100% low | Hematologic (blood) system, Birth defects and developmental delays | Contaminated food and drinking water |
Lead | 60% moderate 40% low | Lead-based paint in older homes, household dust, vinyl products, tap water | |
Mercury | 40% high 20% moderate 40% low | Brain and nervous system | Seafood, flu shots/vaccines, dental fillings |
Methylmercury | 40% high 20% moderate 40% low | Dietary sources, particularly seafood | |
Bisphenol A | 60% high 20% moderate 20% low | Polycarbonate plastics, food can linings, dental sealants |
Detailed report by chemical (return to summary)
polybrominated diphenyl ethers (pbdes)
29-34 of 46 found
Fire retardants in furniture foam, computers, and televisions. Accumulate in human tissues. May harm brain development.
- geometric mean: 76.5 ng/g lipids in blood serum (vs. 26.3 in CDC biomonitoring [1])
[excludes PBDE-154/PBB-153] - found in 5 of 5 people in the group (vs. 2,037 of 2,337 in CDC biomonitoring)
- found in: Dr. Beverly Wright, Suzie Canales, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
1.11 | ng/g lipids in blood serum | 314 |
Total Polybrominated diphenyl ethers (PBDEs)
Dibrominated diphenyl ethers
Brominated fire retardants used in polyurethan foam and plastics. These PBDEs are neurotoxic and persist in people and the environment. They were withdrawn from the market in the U.S. in 2005.
- geometric mean: 0.0134 ng/g lipids in blood serum (vs. 0.0087 in all EWG/Commonweal studies)
- found in 1 of 5 people in the group (vs. 8 of 76 in all EWG/Commonweal studies)
- found in: Vivian Chang
0.0151 | ng/g lipids in blood serum | 0.0606 |
- geometric mean: 0.509 ng/g lipids in blood serum (vs. 0.0634 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 64 of 76 in all EWG/Commonweal studies)
- found in: Suzie Canales, Jennifer Hill-Kelley, Vivian Chang, Dr. Beverly Wright, Jean Salone
0.00566 | ng/g lipids in blood serum | 3.23 |
Heptabrominated diphenyl ethers
Brominated flame retardants used in plastics. Break down into more toxic and persistent forms in the environment. Withdrawn from the market in the U.S. in 2005.
- geometric mean: 0.761 ng/g lipids in blood serum (vs. 0.0626 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 73 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Vivian Chang, Jennifer Hill-Kelley, Jean Salone, Suzie Canales
0.0122 | ng/g lipids in blood serum | 4.31 |
- geometric mean: 0.0169 ng/g lipids in blood serum (vs. 0.0117 in all EWG/Commonweal studies)
- found in 3 of 5 people in the group (vs. 32 of 76 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Vivian Chang, Suzie Canales
0.00588 | ng/g lipids in blood serum | 0.782 |
Hexabrominated diphenyl ethers
Brominated fire retardants used in foam and plastics. Break down into more toxic and persistent forms in the environment. Withdrawn from the market in the U.S. in 2005.
- geometric mean: 0.204 ng/g lipids in blood serum (vs. 0.0313 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 51 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Suzie Canales, Jean Salone
0.0262 | ng/g lipids in blood serum | 0.59 |
- geometric mean: 0.123 ng/g lipids in blood serum (vs. 0.0176 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 55 of 76 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Suzie Canales, Jean Salone, Vivian Chang
0.0025 | ng/g lipids in blood serum | 0.54 |
- geometric mean: 7.6 ng/g lipids in blood serum (vs. 4.1 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 116 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Suzie Canales, Jean Salone, Vivian Chang
0.238 | ng/g lipids in blood serum | 76.9 |
- geometric mean: 0.445 ng/g lipids in blood serum (vs. 0.511 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 1,110 of 2,337 in CDC biomonitoring)
- found in: Dr. Beverly Wright, Suzie Canales, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.0068 | ng/g lipids in blood serum | 2.73 |
- geometric mean: 0.0751 ng/g lipids in blood serum (vs. 0.0403 in all EWG/Commonweal studies)
- found in 4 of 5 people in the group (vs. 63 of 76 in all EWG/Commonweal studies)
- found in: Suzie Canales, Dr. Beverly Wright, Jean Salone, Vivian Chang
0.0184 | ng/g lipids in blood serum | 0.488 |
Nonabrominated diphenyl ethers
Brominated fire retardants currently used in plastics and fabric. The major use is in electronic devices; the minor use is as a backcoating on industrial fabrics. Are directly toxic to mammals and breakdown to more dangerous forms in the environment.
- geometric mean: 2.97 ng/g lipids in blood serum (vs. in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 24 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Vivian Chang, Jennifer Hill-Kelley, Jean Salone, Suzie Canales
ng/g lipids in blood serum | 19.9 | |
- geometric mean: 3.26 ng/g lipids in blood serum (vs. in all EWG/Commonweal studies)
- found in 4 of 5 people in the group (vs. 32 of 116 in all EWG/Commonweal studies)
- found in: Vivian Chang, Jennifer Hill-Kelley, Jean Salone, Suzie Canales
ng/g lipids in blood serum | 19 | |
- geometric mean: 2.1 ng/g lipids in blood serum (vs. in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 29 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Vivian Chang, Jennifer Hill-Kelley, Jean Salone, Suzie Canales
ng/g lipids in blood serum | 14.7 | |
Octabrominated diphenyl ethers
Brominated flame retardants used in plastics. Break down into more toxic and persistent forms in the environment. Withdrawn from the market in the U.S. in 2005.
- geometric mean: 1.36 ng/g lipids in blood serum (vs. in all EWG/Commonweal studies)
- found in 4 of 5 people in the group (vs. 54 of 116 in all EWG/Commonweal studies)
- found in: Vivian Chang, Jennifer Hill-Kelley, Jean Salone, Suzie Canales
ng/g lipids in blood serum | 16.5 | |
Pentabrominated diphenyl ethers
Brominated fire retardants used in polyurethan foam and plastics. These PBDEs are neurotoxic and persist in people and the environment. They were withdrawn from the market in the U.S. in 2005.
- geometric mean: 3.92 ng/g lipids in blood serum (vs. 3.03 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 1,918 of 2,337 in CDC biomonitoring)
- found in: Suzie Canales, Dr. Beverly Wright, Jennifer Hill-Kelley, Jean Salone, Vivian Chang
0.00528 | ng/g lipids in blood serum | 32.6 |
- geometric mean: 0.0424 ng/g lipids in blood serum (vs. 0.0171 in all EWG/Commonweal studies)
- found in 3 of 5 people in the group (vs. 3 of 76 in all EWG/Commonweal studies)
- found in: Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.032 | ng/g lipids in blood serum | 0.251 |
- geometric mean: 0.0457 ng/g lipids in blood serum (vs. 0.0116 in all EWG/Commonweal studies)
- found in 2 of 5 people in the group (vs. 25 of 76 in all EWG/Commonweal studies)
- found in: Vivian Chang, Jean Salone
0.0121 | ng/g lipids in blood serum | 0.27 |
- geometric mean: 0.365 ng/g lipids in blood serum (vs. 0.839 in CDC biomonitoring [1])
- found in 4 of 5 people in the group (vs. 512 of 2,337 in CDC biomonitoring)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.000971 | ng/g lipids in blood serum | 2.27 |
In PBDE chemical family - fire retardant in furniture foam, computers, televisions; may harm brain development and hormone systems.
- geometric mean: 3.37 ng/g lipids in blood serum (vs. 4.32 in CDC biomonitoring [1])
- found in 4 of 5 people in the group (vs. 1,395 of 2,337 in CDC biomonitoring)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.0786 | ng/g lipids in blood serum | 31.2 |
Tetrabrominated diphenyl ethers
Brominated fire retardants used in polyurethan foam and plastics. These PBDEs are neurotoxic and persist in people and the environment. They were withdrawn from the market in the U.S. in 2005.
In PBDE chemical family - fire retardant in furniture foam, computers, televisions; may harm brain development and hormone systems.
- geometric mean: 22.7 ng/g lipids in blood serum (vs. 15 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 1,975 of 2,337 in CDC biomonitoring)
- found in: Suzie Canales, Dr. Beverly Wright, Vivian Chang, Jennifer Hill-Kelley, Jean Salone
0.33 | ng/g lipids in blood serum | 143 |
- geometric mean: 0.165 ng/g lipids in blood serum (vs. 0.0647 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 64 of 76 in all EWG/Commonweal studies)
- found in: Suzie Canales, Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.0158 | ng/g lipids in blood serum | 1.26 |
- geometric mean: 0.0317 ng/g lipids in blood serum (vs. 0.00557 in all EWG/Commonweal studies)
- found in 3 of 5 people in the group (vs. 28 of 76 in all EWG/Commonweal studies)
- found in: Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.00522 | ng/g lipids in blood serum | 0.191 |
- geometric mean: 0.243 ng/g lipids in blood serum (vs. 0.337 in CDC biomonitoring [1])
- found in 4 of 5 people in the group (vs. 449 of 2,337 in CDC biomonitoring)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.0224 | ng/g lipids in blood serum | 1.33 |
- geometric mean: 0.0368 ng/g lipids in blood serum (vs. 0.00579 in all EWG/Commonweal studies)
- found in 4 of 5 people in the group (vs. 23 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.008 | ng/g lipids in blood serum | 0.273 |
- geometric mean: 0.0371 ng/g lipids in blood serum (vs. 0.00491 in all EWG/Commonweal studies)
- found in 3 of 5 people in the group (vs. 27 of 76 in all EWG/Commonweal studies)
- found in: Vivian Chang, Jennifer Hill-Kelley, Jean Salone
0.00386 | ng/g lipids in blood serum | 0.128 |
- geometric mean: 0.0734 ng/g lipids in blood serum (vs. 0.0163 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 44 of 76 in all EWG/Commonweal studies)
- found in: Suzie Canales, Dr. Beverly Wright, Jennifer Hill-Kelley, Vivian Chang, Jean Salone
0.00643 | ng/g lipids in blood serum | 0.823 |
Tribrominated diphenyl ethers
Brominated fire retardants used in polyurethan foam and plastics. These PBDEs are neurotoxic and persist in people and the environment. They were withdrawn from the market in the U.S. in 2005.
- geometric mean: 0.142 ng/g lipids in blood serum (vs. 0.0224 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 63 of 116 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Suzie Canales, Vivian Chang, Jennifer Hill-Kelley, Jean Salone
0.0141 | ng/g lipids in blood serum | 0.673 |
- geometric mean: 1.52 ng/g lipids in blood serum (vs. 0.3 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 100 of 2,337 in CDC biomonitoring)
- found in: Suzie Canales, Dr. Beverly Wright, Vivian Chang, Jennifer Hill-Kelley, Jean Salone
0.0385 | ng/g lipids in blood serum | 6.17 |
- geometric mean: 0.0428 ng/g lipids in blood serum (vs. 0.00418 in all EWG/Commonweal studies)
- found in 2 of 5 people in the group (vs. 3 of 76 in all EWG/Commonweal studies)
- found in: Dr. Beverly Wright, Jean Salone
0.00766 | ng/g lipids in blood serum | 0.102 |
- geometric mean: 0.0224 ng/g lipids in blood serum (vs. 0.00639 in all EWG/Commonweal studies)
- found in 4 of 5 people in the group (vs. 16 of 76 in all EWG/Commonweal studies)
- found in: Jennifer Hill-Kelley, Vivian Chang, Jean Salone, Dr. Beverly Wright
0.00866 | ng/g lipids in blood serum | 0.386 |
perfluorochemicals (pfcs)
7 of 13 found
Includes Teflon, Scotchgard, Stainmaster. Linked to cancer and birth defects.
- geometric mean: 15 ng/mL in blood serum (vs. 22.7 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 3,684 of 3,959 in CDC biomonitoring)
- found in: Vivian Chang, Suzie Canales, Jennifer Hill-Kelley, Jean Salone, Dr. Beverly Wright
2.63 | ng/mL in blood serum | 77.7 |
Total Perfluorochemicals (PFCs)
Breakdown product of stain- and grease-proof coatings on food packaging, couches, carpets. A 10-carbon version of PFOA; persistent; bioaccumulative.
- geometric mean: 0.24 ng/mL in blood serum (vs. 0.245 in CDC biomonitoring [1])
- found in 3 of 5 people in the group (vs. 579 of 2,368 in CDC biomonitoring)
- found in: Jean Salone, Jennifer Hill-Kelley, Dr. Beverly Wright
0.218 | ng/mL in blood serum | 1.47 |
Breakdown product of stain- and grease-proof coatings on food packaging, couches, carpets. A 9-carbon version of PFOA; persistent; bioaccumulative.
- geometric mean: 0.876 ng/mL in blood serum (vs. 0.63 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 2,058 of 2,368 in CDC biomonitoring)
- found in: Suzie Canales, Vivian Chang, Jennifer Hill-Kelley, Jean Salone, Dr. Beverly Wright
0.283 | ng/mL in blood serum | 5.85 |
Used to make Teflon pan coatings; breakdown product of stain- and grease-proof coatings. Likely human carcinogen. Found in most people. Being phased out of some products.
- geometric mean: 1.52 ng/mL in blood serum (vs. 2.19 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 2,085 of 2,368 in CDC biomonitoring)
- found in: Vivian Chang, Suzie Canales, Jennifer Hill-Kelley, Jean Salone, Dr. Beverly Wright
0.366 | ng/mL in blood serum | 10.1 |
PFOSA (Perfluorooctanesulfonic acid)
In Scotchgard prior to 2000 - part of the 'PFOS chemistry' phased out of use by 3M in 2000 over health concerns; metabolized into PFOS by the body.
- geometric mean: 0.235 ng/mL in blood serum (vs. 12 in CDC biomonitoring [1])
- found in 2 of 5 people in the group (vs. 2,091 of 2,368 in CDC biomonitoring)
- found in: Dr. Beverly Wright, Jean Salone
ng/mL in blood serum | 1.08 | |
PFUnA (Perfluoroundecanoic acid)
Breakdown product of stain- and grease-proof coatings on food packaging, couches, carpets. An 11-carbon version of PFOA; persistent; bioaccumulative.
- geometric mean: 0.186 ng/mL in blood serum (vs. 0.212 in CDC biomonitoring [1])
- found in 4 of 5 people in the group (vs. 174 of 2,368 in CDC biomonitoring)
- found in: Jean Salone, Jennifer Hill-Kelley, Vivian Chang, Dr. Beverly Wright
ng/mL in blood serum | 1.76 | |
PFHxS (Perfluorohexanesulfonate)
In fire fighting foams and carpet treatments. Phased out of consumer products by 3M in 2000 over health concerns.
- geometric mean: 0.785 ng/mL in blood serum (vs. 1.67 in CDC biomonitoring [1])
- found in 4 of 5 people in the group (vs. 1,527 of 1,591 in CDC biomonitoring)
- found in: Vivian Chang, Jennifer Hill-Kelley, Dr. Beverly Wright, Jean Salone
ng/mL in blood serum | 13.1 | |
PFOS (Perfluorooctanesulfonate)
Active ingredient in Scotchgard prior to 2000. Phase out forced by EPA because concentrations in human blood close to levels that harm lab animals.
- geometric mean: 11.2 ng/mL in blood serum (vs. 26.2 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 1,580 of 1,591 in CDC biomonitoring)
- found in: Vivian Chang, Suzie Canales, Jennifer Hill-Kelley, Jean Salone, Dr. Beverly Wright
1.07 | ng/mL in blood serum | 64.1 |
nitro- and polycylic- musks
2 of 10 found
Fragrance ingredients. Build up in human tissues. May harm hormone system.
- geometric mean: 1.35 ng/g in blood serum (vs. 0.295 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 35 of 42 in all EWG/Commonweal studies)
- found in: Jean Salone, Vivian Chang, Suzie Canales, Dr. Beverly Wright, Jennifer Hill-Kelley
0.0547 | ng/g in blood serum | 4.23 |
Total Nitro- and polycylic- musks
Synthetic fragrance in cosmetics, cleaning agents, detergents, air fresheners, perfumes. Suspected hormone disruptor. Prevents cells from blocking entry of toxins in animal study. Bioaccumulative.
- geometric mean: 0.259 ng/g in blood serum (vs. 0.139 in all EWG/Commonweal studies)
- found in 4 of 5 people in the group (vs. 26 of 42 in all EWG/Commonweal studies)
- found in: Jean Salone, Vivian Chang, Dr. Beverly Wright, Jennifer Hill-Kelley
0.0547 | ng/g in blood serum | 3.6 |
Synthetic fragrance in cosmetics, detergents, cigarettes. Suspected hormone disruptor. Prevents cells from blocking entry of toxins in animal study. Bioaccumulative.
- geometric mean: 0.979 ng/g in blood serum (vs. 0.109 in all EWG/Commonweal studies)
- found in 5 of 5 people in the group (vs. 15 of 42 in all EWG/Commonweal studies)
- found in: Jean Salone, Jennifer Hill-Kelley, Vivian Chang, Dr. Beverly Wright, Suzie Canales
0.11 | ng/g in blood serum | 1.6 |
perchlorate
1 of 1 found
Explosive component of solid rocket and missile fuel. Widespread contaminant of food, drinking water, and people. Disrupts thyroid hormones, particularly in women with lower iodide intake; may harm brain development.
- geometric mean: 0.743 ug/L in urine (vs. 3.77 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 2,818 of 2,818 in CDC biomonitoring)
- found in: Jean Salone, Jennifer Hill-Kelley, Suzie Canales, Dr. Beverly Wright, Vivian Chang
0.2 | ug/L in urine | 5.6 |
metals
3 of 3 found
Neurotoxic heavy metal linked to IQ deficits and behavioral problems. Found in dust from chipping lead paint in older homes, and in some tap water.
- geometric mean: 0.98 ug/dL in whole blood (vs. 1.33 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 7,896 of 8,373 in CDC biomonitoring)
- found in: Suzie Canales, Jennifer Hill-Kelley, Vivian Chang, Dr. Beverly Wright, Jean Salone
0.222 | ug/dL in whole blood | 4.7 |
Mercury is used in dental fillings and to preserve vaccines; it is also a common pollutant in seafood. Mercury harms brain development and function.
- geometric mean: 0.706 ug/L in whole blood (vs. 0.56 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 7,584 of 8,373 in CDC biomonitoring)
- found in: Suzie Canales, Jean Salone, Jennifer Hill-Kelley, Dr. Beverly Wright, Vivian Chang
7.0E-5 | ug/L in whole blood | 12 |
Forms from mercury, a pollutant from coal-fired power plants and other sources. Methylmercury accumulates in seafood and harms brain development and function.
- geometric mean: 0.428 ug/L in whole blood (vs. 0.56 in CDC biomonitoring [1])
- found in 4 of 5 people in the group (vs. 7,584 of 8,373 in CDC biomonitoring)
- found in: Jean Salone, Jennifer Hill-Kelley, Dr. Beverly Wright, Vivian Chang
0.0735 | ug/L in whole blood | 25.9 |
bisphenol a & badge
1 of 1 found
Detected in polycarbonate plastic, dental sealants, and resins that line metal cans. Linked to hormone disruption, birth defects, cancer with effects at very low doses.
- geometric mean: 3.36 ug/g creatinine in urine (vs. 2.33 in CDC biomonitoring [1])
- found in 5 of 5 people in the group (vs. 2,350 of 2,612 in CDC biomonitoring)
- found in: Vivian Chang, Dr. Beverly Wright, Jean Salone, Jennifer Hill-Kelley, Suzie Canales
1.2 | ug/g creatinine in urine | 6.06 |
References/Notes
[1] CDC (2005). National Report on Human Exposure to Environmental Chemicals, Centers for Disease Control. http://www.cdc.gov/exposurereport/. (Methylmercury results have been compared to total mercury in CDC biomonitoring.)
[2] The chemicals co-eluted in the laboratory analysis.