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中文名稱：Sediment Inorganic Sediment
英文名稱：Sediment Inorganic Sediment訂貨以英文名稱為準(zhǔn)。
產(chǎn)品編號：IAEA-477CAS：/
品牌：標(biāo)準(zhǔn)物質(zhì)產(chǎn)地：進口
標(biāo)準(zhǔn)值：見證書分子式：/
規(guī)格 市場價(元) 折后價(元) 供貨周期 數(shù)量 加入購物車 50g 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細介紹
IAEA-477Sediment Inorganic Sediment
Two sediment samples were collected in Queensland region, Australia using a Van Veen type sampler. One site was sampled in Townsville Marina and the other in Townsville Ross River. Frozen samples were sent from Brisbane to IAEA laboratories in Monaco. Sediment sample was freeze-dried, micronized at 20 μm and γ-irradiated at doses ranging from 27 to 39.5 kGy. The final powdered composite sediment, about 15 kg, was homogenized by mixing it in a stainless-steel rotating drum for three weeks. Then, aliquots of about 50 grams were packaged into cleaned amber glass bottles with screw caps and
Compound
Unit
Certified value1
U (k=2)2
Naphthalene
μg kg-1
4.5
1.8
2-Methylnaphthalene
μg kg-1
2.4
0.7
1-Methylnaphthalene
μg kg-1
1.4
0.5
Phenanthrene
μg kg-1
4.6
1.3
Anthracene
μg kg-1
1.3
0.5
1-Methylphenanthrene
μg kg-1
1.5
0.6
2-Methylphenanthrene
μg kg-1
2.4
0.9
C1-Phen/Anth
μg kg-1
7.6
2.3
Fluoranthene
μg kg-1
6.6
1.7
Pyrene
μg kg-1
6.2
1.6
Benz[a]anthracene
μg kg-1
2.4
0.6
1 The value is the mean of the means of the accepted sets of data, each set being obtained by different laboratory. The certified values are reported on dry mass basis and are traceable to the SI.
2 Expanded uncertainty evaluated according to ISO Guide 35 [1] with a coverage factor k=2 estimated in accordance with the JCGM 100:2008 Evaluation of measurement data – Guide to the expression of uncertainty in measurement [2], corresponding to the level of confidence of about 95%.
Certified mass fraction values (Cont.)
(based on dry mass)
Compound
Unit
Certified value1
U (k=2)2
Chrysene (+ Triphenylene)
μg kg-1
3.5
0.9
C1-Chrysenes
μg kg-1
4.1
1.3
Benzo[b+j]fluoranthene
μg kg-1
5.0
1.2
Benzo[k]fluoranthene
μg kg-1
2.1
0.6
Benzo[e]pyrene
μg kg-1
3.9
1.3
Benzo[a]pyrene
μg kg-1
2.9
0.7
Indeno[1,2,3-c,d]pyrene
μg kg-1
2.6
0.7
Benzo[g,h,i]perylene
μg kg-1
3.0
0.7
1 The value is the mean of the mean of the accepted sets of data, each set being obtained by different laboratory. The certified values are reported on dry mass basis and are traceable to the SI.
2 Expanded uncertainty evaluated according to ISO Guide 35 [1] with a coverage factor k=2 estimated in accordance with the JCGM 100:2008 Evaluation of measurement data – Guide to the expression of uncertainty in measurement [2], corresponding to the level of confidence of about 95%.
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