laboratory testing results of drinking waters, waters and...
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Laboratory Testing Results of Drinking Waters, Waters and Sediment Collected from an Informal Pond, as well as Wastewater Collected in the Vicinity of Datang Hexigten Coal-to-Gas Project
Testing Results of Water Samples from an Informal Pond
On August 2nd 2014, Greenpeace East Asia (hereafter ‘Greenpeace’) collected two water
samples using scientific methods from an informal pond near the west boundary of the
Datang Hexigten Coal-to Gas Project plant. One sample was taken far from the discharge
pipe (CN14015) and the other one near the discharge pipe (CN14016). The samples were
delivered to Greenpeace Research Laboratories based at the University of Exeter
(hereafter ‘Greenpeace Research Laboratories’) for testing. The samples were analyzed
qualitatively for volatile (VOCs) and semi-volatile organic compounds (SVOCs), and
quantitatively for a range of common metals.
On August 30th 2014, Greenpeace once again collected a single water sample (Wastewater
1) near the discharge pipe from the informal pond using scientific methods. The sample
was delivered to an accredited independent third-party testing facility in China (hereafter
‘third-party testing facility’) for quantitative analysis for a range of organic compounds and
metals.
Some of the compounds were present below the limit of detection for the analytical method
employed, and in these cases the results are presented in tables as ‘<xx’, where xx is the
method detection limit for the individual compound.
Table 1 Concentrations of Metals and Metalloids (µg/l) in Filtered and Whole water
Samples from the Informal Pond, as determined by Greenpeace Research Laboratories
Filtered sample (dissolved metals)
Waters samples from the informal pond
Whole sample (total metals)
Water samples from the informal pond
CN14015 CN14016 CN14015 CN14016
Antimony <100 <100 Antimony <100 <100
Arsenic <10 <10 Arsenic <10 <10
Cadmium <5 <5 Cadmium <5 <5
Chromium <10 <10 Chromium <10 <10
Cobalt <20 <20 Cobalt <20 <20
Copper <10 <10 Copper <10 <10
Iron 1230 1200 Iron 2210 2740
Lead <40 <40 Lead <40 <40
Manganese 122 137 Manganese 142 162
Mercury <5 <5 Mercury <5 <5
Molybdenum <30 <30 Molybdenum <30 <30
Nickel <20 <20 Nickel <20 <20
Selenium <10 <10 Selenium <10 <10
Vanadium <20 <20 Vanadium <20 <20
Zinc <5 <5 Zinc 453 597
Table 2 Qualitative testing results of organic compounds (VOCs and SVOCs) identified in
the informal pond water sample CN14015, as determined by Greenpeace Research
Laboratories
Sample code No. of chemicals identified
Compounds identified to be better than 90%
Note
CN14015
VOCs (11)
Carbon disulphide Dimethyl sulphide Benzene Chlorobenzene 1,4-dichlorobenzene Ethylbenzene Dichloromethane Isopropylbenzene Toluene m-Xylene and/or p-Xylene o-Xylene
Trace levels only
SVOCs (15)
Phenyl isocyanate methylphenol dimethylphenol (2 isomers) ethylphenol ethylmethylphenol (2 isomers) 4-(1,4-dimethylethyl)phenol Phthalic acid Diethylphthalate methylnaphthalene 9H-Fluorene Phenanthrene Pyrene
Phenol derivatives PAHs
Table 3 Qualitative testing results of organic compounds (VOCs and SVOCs) identified in
the informal pond water sample CN14016, as determined by Greenpeace Research
Laboratories
Sample code
No. of chemicals identified
Compounds identified to be better than 90% Note
CN14016
VOCs (15)
Benzene Dimethyl sulphide Dimethyl trisulphide Chlorobenzene 1,4-dichlorobenzene Ethylbenzene Isopropylbenzene Carbon disulphide Dichloromethane Styrene Toluene m-Xylene and/or p-Xylene o-Xylene
Trace levels only
SVOCs (44)
Dimethyl trisulphide phenylethanone methylphenol (2 isomers) ethylphenol dimethylphenol (4 isomers) ethylmethylphenol (2 isomers) Dibutylphenol Phthalic acid Benzylmethyl disulphide Dimethylphthalate Dibenzofuran Phenyl isocyanate Diethylphthalate 9H-Fluorene 9H-Fluorene-9-ol Phenanthrene Fluoranthene 1-methylnaphthalene 2-methylnaphthalene trimethylnaphthalene
Phenol derivatives
PAHs & derivatives
Table 4 Quantitative testing results of water sample (Wastewater 1) from the informal
pond, as determined by the Chinese third-party testing facility
Test Subject Test result Test subject Test result
Volatile Phenols (mg/l) 0.0153 Zinc (mg/l) 2 0.04(8)
Fluorides (mg/l)5 3.82 Lead (mg/l) 2 <0.2
Sulfides (mg/l) 5 0.010 CODCr (mg/l) 2,5 58.6
Cyanides (mg/l) 2 <0.004 Naphthalene (ng/l) 4 <25
Petroleum Oils (mg/l) 2 0.43 Acenaphthylene (ng/l) 4 <1.0
Benzene (µg/l) 4 0.13 Acenaphthlene (ng/l) 4 36.5
Toluene (µg/l) 4 0.35 Fluorene (ng/l) 4 303
Ethylbenzene (µg/l) 4 0.14 Phenanthrene (ng/l) 4 453
m- /p-Xylene (µg/l) 4 0.30 Anthracene (ng/l) 4 <1.0
o-Xylene (µg/l) 4 0.12 Fluoranthene (ng/l) 4 78.4
Phenol (mg/l) 2 0.00050 Pyrene (ng/l) 4 66.6
Mercury (µg/l) 2,5 2.4 Benzo[a]anthracene (ng/l) 4 6.7
Chromium (µg/l) 2,7 0.65 Chrysene (ng/l) 4 8.3
Arsenic (µg/l) 2 <5.0 Benzo[b]fluoranthene (ng/l) 4 53.5
Cadmium (mg/l) 2 <0.04 Benzo[k]fluoranthene (μg/L) (ng/l) 4
<0.5
Nickel (mg/l) 2 <0.15 Benzo[a]pyrene (ng/l) 4 41.5
Copper (mg/l) 2,9 <0.01 Indeno[1,2,3-c,d]pyrene (ng/l)
4 2.4
Iron (mg/l) 2 0.1(8) Dibenzo[a,h]anthracene (ng/l)
4 0.8
Manganese (mg/l)2 <0.04 Benzo[g,h,i]perylene (ng/l) 4 2.0
Testing results of sediment samples from the informal pond
On August 2nd 2014, Greenpeace collected a single sediment sample far from the
discharge pipe (CN140017) from the same informal pond, using scientific method. The
sample was delivered to Greenpeace Research Laboratories for testing. The sample was
analyzed qualitatively for SVOCs, and quantitatively for a range of common metals.
On August 30th 2014, Greenpeace once again collected another single sediment sample far
from the discharge pipe (Sediment 1) from the informal pond using scientific methods.
The sample was delivered to the third-party testing facility for quantitative analysis for a
range of organic compounds and metals.
Table 5 Qualitative testing results of semi-volatile organic compounds (SVOCs) identified
in sediment sample CN14017, as determined by Greenpeace Research Laboratories
Sample code
No. of chemicals identified
Compounds identified to be better than 90% Note
CN14017
SVOCs (33)
Pentadecane Docosane Dibenzofuran Benzo[b]naphtha(2,3-d)furan 1-methyl-7-(1-methylethyl)phenol Triphenylene 9H-Fluorene 1-methyl-9H-Fluorene Phenathrene Fluoranthene Pyrene Benzo[a]pyrene Naphthalene 1-methylpaphthalene 2-methylnaphthalene Dimethylnaphthalene Phenylnaphthalene
PAHs & derivatives
Table 6 Concentrations of metals
and metalloids (mg/kg) in
sediment sample CN14017 from
the informal pond, as
determined by Greenpeace
Research Laboratories
Solid sample (total metals, mg/kg)
CN14017
Antimony <10
Arsenic <1
Cadmium <1
Chromium 4
Cobalt <2
Copper 3
Lead <0.5
Manganese 27
Mercury <0.5
Molybdenum <4
Nickel 2
Selenium <40
Vanadium 4
Zinc 142
Table 7 Testing results of sediment sample (Sediment 1) from
the informal pond, as determined by the Chinese third-party
testing facility
Test subject Test result
Volatile Phenols (mg/kg, dry weight)1,5 0.30
Phenol (mg/kg, dry weight) 2,5 0.123
Fluorides(mg/kg, dry weight) 1,5 278
Petroleum Oil (mg/kg, dry weight)1,2,5 54.7
Mercury (mg/kg, dry weight) 2,5 0.017
Arsenic (mg/kg, dry weight) 10 1.15
Copper (mg/kg, dry weight) 2 <1.9
Zinc (mg/kg, dry weight) 2 116
Cadmium (mg/kg, dry weight)4 <0.1
Chromium(mg/kg, dry weight) 2 3.9
Manganese (mg/kg, dry weight) 2,5 62.4
Nickel (mg/kg, dry weight) 2 2.5
Cobalt (mg/kg, dry weight) 2 <0.4
Vanadium (mg/kg, dry weight) 2 5.5
Lead (mg/kg, dry weight) 2 8.4
Naphthalene (µg/kg, dry weight) 3,5 65.7
Acenaphthylene (µg/kg, dry weight) 3,5 18.3
Acenaphthlene (µg/kg, dry weight) 3,5 26.2
Fluorene (µg/kg, dry weight) 3,5 220
Phenanthrene (µg/kg, dry weight) 3,5 753
Anthracene (µg/kg, dry weight) 3,5 310
Fluoranthene (µg/kg, dry weight) 3,5 664
Pyrene (µg/kg, dry weight) 3,5 618
Benzo[a]anthracene (µg/kg, dry weight)
3,5 380
Chrysene (µg/kg, dry weight) 3,5 292
Benzo[b]fluoranthene (µg/kg, dry weight) 3,5
434
Benzo[k]fluoranthene (µg/kg, dry weight)
3,5 70.2
Benzo[a]pyrene (µg/kg, dry weight) 3,5 217
Indeno[1,2,3-c,d]pyrene (µg/kg, dry weight) 3,5,6
84.8
Dibenzo[a,h]anthracene (µg/kg, dry weight) 3,5
28.6
Benzo[g,h,i]perylene (µg/kg, dry weight)
3,5 84.2
Testing Results of Wastewater Samples from the Formal Evaporation Pond
On August 30th 2014, Greenpeace collected two parallel wastewater samples using
scientific methods from the formal evaporation pond, which is located to the southeast of
the Datang Hexigten Coal-to-Gas Project plant. One sample (CN14018) was delivered to
Greenpeace Research Laboratories and the other one (Wastewater 2) to the third-party
testing facility.
Table 8 Concentrations of metals and metalloids (µg/l) in filtered and whole wastewater
samples (CN14018) from the formal evaporation pond, as determined by Greenpeace
Research Laboratories
Filtered sample (dissolved metals)
Wastewater from the evaporation pond
Whole sample (total metals)
Wastewater from the evaporation pond
CN14018 CN14018
Antimony <100 Antimony <100
Arsenic 48 Arsenic 53
Cadmium <5 Cadmium <5
Chromium <10 Chromium <10
Cobalt <20 Cobalt <20
Copper <10 Copper <10
Iron 301 Iron 1370
Lead <40 Lead <40
Manganese 28 Manganese 103
Mercury <5 Mercury <5
Molybdenum <30 Molybdenum <30
Nickel <20 Nickel <20
Selenium 11 Selenium 16
Vanadium <20 Vanadium <20
Zinc 33 Zinc 177
Table 9 Volatile organic compounds (VOCs) identified in the wastewater sample
CN140018 from the formal evaporation pond, as determined by Greenpeace Research
Laboratories
No. of chemicals identified
VOCs (154)
Compounds identified to better than 90%
Phenol & derivatives Other compounds
Phenol
Methylphenol
Ethylphenol
Azido‐phenol
Dimethylphenol (3 isomers)
(E)‐3‐Phenyl‐2‐butenal
1‐(2‐Ethylphenyl)ethan‐1‐one
1‐Methyl‐2,3‐dihydroindene
2‐Cyclopenten‐1‐one, dimethyl‐
Methylbutane
Propanone
Benzaldehyde
Benzenemethanol
Toluene
Decane
Dodecane
Tetramethylhexadecane
Diisopropyl ether
Isopropyl(6‐phenylhex‐5‐ynyl)amine
N‐Benzyl‐3‐pyrroline‐N‐oxide
N‐Benzyl‐N‐(phenylethyl)amine
1,3,5‐Trimethyl‐1H‐Pyrazole
Dimethylthiophene
trans‐3‐Methoxy‐5‐(4‐methoxyphenyl)‐1,2,4‐ trioxolane
Tetrahydro‐2‐methyl‐2‐furancarboxaldehyde
5‐Phenyl‐2‐tetrahydrofurylmethyl 2'‐pyridyl sulfide
Benzene derivatives
Tetramethylbenzene
Difluorobenzene
Dimethylbenzene
1‐Methyl‐2‐(1‐propynyl)benzene
Propenylbenzene
4‐Ethenyl‐1,2‐dimethylbenzene
Pyridines derivatives
Methylpyridine
Dimethylpyridine
Trimethylpyridine
2‐Pyridinecarboxylic acid
Naphthalene & derivatives
Naphthalene
1‐Methylnaphthalene
2‐Methylnaphthalene
Table 10 Semi-volatile organic compounds (SVOCs ) identified in the wastewater sample
CN140018 from the formal evaporation pond, as determined by Greenpeace Research
Laboratories
No. of chemicals identified SVOCs (209)
Compounds identified to better than 90%
Phenol & derivatives PAHs & derivatives
Phenol
Methylphenol (2 isomers)
Dimethylphenol (3 isomers)
Trimethylphenol (2 isomers)
Ethylphenol
Diethylphenol (2 isomers)
Ethylmethylphenol (3 isomers)
Propylphenol
Methoxyphenol
Methylpropylphenol
9H‐Fluorene
Hydroxymethylnaphthalene
9H‐Fluorenol (2 isomers)
Other compounds
Methyl‐4‐indanol
Ethylanisole
1,1'‐Biphenylol (2 isomers)
Ethynylbiphenyl
2‐Cyclohexene‐1‐carbonitrile
2,3‐Dihydro‐2‐methylbenzo[b]thiophene
3,4,5,6,7,8‐Hexahydro‐(2H)‐naphthalenone
Allyl toluenesulfonate
10‐Azatricyclo[4.3.1.0(1,6)]deca‐2,4‐diene
Hydroxyphthalide
2,3‐Dihydro‐1H‐inden‐5‐ol
(4‐Fluorophenyl)butynone
Benzo[d]isothiazole
(E)‐2‐(2H(1)‐4‐Methoxyphenylethene
Methoxyphenylacetone
1‐Methylene‐1H‐indene
Dimethyl‐3‐phenylaziridine
Pyridines derivatives
Phenylpyridine
9H‐Indeno[2,1‐b]pyridine
3,5‐Diacetyl‐1H‐pyrazole
5‐(Phenylmethyl)‐2‐pyridinamine
Quinoline derivatives
Isoquinoline
Methylisoquinoline
Methylquinoline
7,8‐Dihydro‐6‐methyl‐6H‐pyrrolo[2,3‐g]quinoline
Table 11 Testing results of wastewater samples from the formal evaporation pond, as
determined by the Chinese third-party testing facility
Test subject Test Result Test Subject Test Result
Volatile Phenols (mg/L)
31.1 Zinc (mg/L) 2 0.21
Fluorides (mg/L) 5 0.88 Lead (mg/L) 2 <0.2
Sulfides (mg/L) 5 0.022 CODCr (mg/L) 2,5 2460
Cyanides (mg/L) 2 <0.004 Naphthalene (μg/L) 4 <25
Petroleum Oil (mg/L) 2 1.15 Acenaphthylene (μg/L) 4 0.44
Benzene (μg/L) 4 7.57 Acenaphthlene (μg/L) 4 3.67
Toluene (μg/L) 4 16.1 Fluorene (μg/L) 4 26.3
Ethylbenzene (μg/L) 4 8.79 Phenanthrene (μg/L) 4 56.6
m- /p-Xylene (μg/L) 4 29.7 Anthracene (μg/L) 4 20.6
o-Xylene (μg/L) 4 12.4 Fluoranthene (μg/L) 4 25.0
Phenol (mg/L) 2 58.6 Pyrene (μg/L) 4 20.7
Mercury (μg/L) 2,5 2.8 Benzo[a]anthracene (μg/L) 4 10.4
Chromium (μg/L) 2,7 3.56 Chrysene (μg/L) 4 7.35
Arsenic (μg/L) 2 <5.0 Benzo[b]fluoranthene (μg/L) 4 9.15
Cadmium (mg/L) 2 <0.04 Benzo[k]fluoranthene (μg/L) 4 1.39
Nickel (mg/L) 2 <0.15 Benzo[a]pyrene (μg/L) 4 5.47
Copper (mg/L) 2,9 <0.01 Indeno[1,2,3-c,d]pyrene (μg/L) 4 3.87
Iron (mg/L) 2 1.1 Dibenzo[a,h]anthracene (μg/L) 4 0.86
Manganese (mg/L) 2 <0.04 Benzo[g,h,i]perylene (μg/L) 4 2.58
Testing results of drinking water samples from private wells located in the vicinity of Datang Hexigten Coal-to-Gas Project
On August 2nd 2014, Greenpeace used scientific methods and collected 14 drinking water samples from private wells located in the vicinity of
the Datang Hexigten Coal-to Gas Project plant. The samples (CN14001-14) were delivered to Greenpeace Research Laboratories for testing.
On August 30th 2014, Greenpeace used scientific methods and collected 11 drinking water samples (Well 1-11) from the same sampled
private wells1 , which were delivered to the third-party testing facility for quantitative analysis.
Table 12 Testing results of drinking water samples, as determined by the Chinese third-party independent testing facility
Test subject Test result
Well 1 Well 2 Well 3 Well 4 Well 5 Well 6 Well 7 Well 8 Well 9 Well 10 Well 11
Volatile Phenols (mg/L)
0.0003(8) 0.0008 0.0008 0.0005 0.0019 0.0008 0.0017 0.0006 0.0008 0.0007 0.0012
Fluorides (mg/L) 5 0.05(8) <0.05 0.05(8) 0.05(8) <0.05 <0.05 <0.05 0.05(8) 0.05(8) 0.13 0.05(8)
Sulfides (mg/L) 5 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002 <0.002
Cyanides (mg/L)2 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004 <0.004
Petroleum Oil (mg/L) 2
0.39 0.30 0.44 0.28 0.24 0.24 0.24 0.31 0.35 0.31 0.29
Benzene (µg/L) 4 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08 <0.08
Toluene (µg/L) 4 0.25 0.23 0.22 0.20 0.21 0.20 0.20 0.19 0.19 0.18 0.18
Ethylbenzene (µg/L) 4
<0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
m- /p-Xylene (µg/L) 4
<0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
o-Xylene (µg/L) 4 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10 <0.10
Phenol (µg/L)2 0.071 0.055 0.033 0.103 0.007 0.028 0.025 0.049 0.014 0.017 0.013
1 On August 30
th 2014, there was no one at home in three out of the 14 households where Greenpeace planned to sample private well water Greenpeace sampled on August 2
nd, making it
impossible to collect samples at those locations.
Table 13 Concentrations of metals and metalloids (µg/l) in filtered drinking water samples, as determined by Greenpeace Research
Laboratories
Filtered sample (dissolved metals)
Concentrations (µg/l)
CN 14001
CN 14002
CN 14003
CN 14004
CN 14005
CN 14006
CN 14007
CN 14008
CN 14009
CN 14010
CN 14011
CN 14012
CN 14013
CN 14014
Antimony <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100
Arsenic <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Cadmium <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5
Chromium <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Cobalt <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20
Copper <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Iron 170 <20 164 <20 <20 <20 22 <20 27 <20 <20 <20 30 131
Lead <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40
Manganese 414 553 186 265 612 257 227 298 172 146 <5 22 235 367
Mercury <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5
Molybdenum <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30
Nickel <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20
Selenium <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Vanadium <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20
Zinc <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5
Table 14 Concentrations of metals and metalloids (µg/l) in whole drinking water samples, as determined by Greenpeace Research
Laboratories
Whole samples (total metals)
Concentrations (µg/l)
CN 14001
CN 14002
CN 14003
CN 14004
CN 14005
CN 14006
CN 14007
CN 14008
CN 14009
CN 14010
CN 14011
CN 14012
CN 14013
CN 14014
Antimony <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100 <100
Arsenic <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Cadmium <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5
Chromium <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Cobalt <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20
Copper <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Iron 1470 2580 1560 3490 1900 240 657 628 1240 700 603 276 6265 3630
Lead <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40 <40
Manganese 425 562 181 265 616 263 241 329 193 158 13 41 267 411
Mercury <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5 <5
Molybdenum <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30 <30
Nickel <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20
Selenium <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Vanadium <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20 <20
Zinc <5 <5 31 7 8 <5 9 <5 <5 <5 <5 <5 <5 <5
15
Table 15 Organic compounds (VOCs and SVOCs) identified in drinking water samples
CN14001-14, as determined by Greenpeace Research Laboratories
Sample code No. of chemicals identified
Compounds identified to be better than 90%
Note
CN14001 4 Dichloromethane Diethylphthalate
Trace levels only
CN14002 4 Carbon disulfide Tetrachloroethene Dichloromethane
Trace levels only
CN14003 2 Dichloromethane Trace levels only
CN14004 0 n/a
CN14005 1 Carbon disulphide Trace levels only
CN14006 3 Dichloromethane Diethylphthalate
Trace levels only
CN14007 0 n/a
CN14008 0 n/a
CN14009 2 Phthalic acid Diethylphthalate
Trace levels only
CN14010 2 Phthalic acid Diethylphthalate
Trace levels of phthalic acid, more prominent peak of diethylphthalate
CN14011 2 Phthalic acid Diethylphthalate
Trace levels only
CN14012 3 n/a
CN14013 3 Phthalic acid Diethylphthalate
Trace levels only
CN14014 3 Dichloromethane Trace levels only
Note:
1. The certified reference material (CRM) used by the accredited third-party testing
facility was in liquid matrix.
2. For these substances, quality control carried out by the accredited third-party testing
facility consisted of checking against certified reference material (CRM) or laboratory
prepared matrix spike.
3. For these substances, quality control carried out by the accredited third-party testing
facility consisted of comparison of sample duplicates for reproducibility. CRM and/or
laboratory-prepared matrix spike samples were not analyzed in these cases.
16
4. For these substances, quality control carried out by the accredited third-party testing
facility consisted of comparison against sample blanks. CRM and/or laboratory-prepared
matrix spike samples were not analyzed in these cases.
5. Data for blanks were not reported by the accredited third-party testing facility.
6. The relative percent difference (RPD) between the replicates was over 30% in this
case.
7. Although the method detection limit was 0.5 µg/L, blanks were reported by the
accredited third-party testing facility for this substance only as ‘<150 µg/L’, as this
value is equivalent to 10% of the corresponding limit (1.5 mg/L) set out in Integrated
Wastewater Discharge Standard (GB 8978-1996).
8. The sample concentration reported by the accredited third-party testing facility is
the same as the corresponding detection limit.
9. Although the method detection limit was 0.01 mg/L, blanks were reported by the
accredited third-party testing facility for this substance only as ‘<0.05 mg/L’, as this
value is equivalent to 10% of the corresponding limit (0.5 mg/L) set out in Integrated
Wastewater Discharge Standard (GB 8978-1996).
10. No QC data was provided by the accredited third-party testing facility for this
substance.