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1. |
Separation of Toxic Congeners from PCB Mixtures on Two Series Coupled Narrow-Bore Columns (50 m SIL-8 AND 25 m HT-5) |
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International Journal of Environmental Analytical Chemistry,
Volume 47,
Issue 3,
1992,
Page 147-166
B. Larsen,
S. Bøwadt,
S. Facchetti,
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摘要:
The complete separation of the toxic non-ortho-substituted polychlorinated biphenyls (PCBs) PCB-77, PCB-126 and PCB-169 from the technical PCB mixtures Askarel and Aroclors (A1232, A1242, A1248, A1254, A1260 and A1262) was obtained on two series coupled narrow-bore columns: 50 m × 0.25 mm, 0.26 μm 5% diphenyldimethylsiloxane (CP-SIL-8) and 25 m × 0.2 mm, 0.1 μm 5% 1,2-dicarba-closo-dodecarborane dimethylsiloxane (HT-5).
ISSN:0306-7319
DOI:10.1080/03067319208027026
出版商:Taylor & Francis Group
年代:1992
数据来源: Taylor
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2. |
Determination of Alkylphenol Ethoxylates and Their Acetic Acid Derivatives in Drinking Water by Particle Beam Liquid Chromatography/Mass Spectrometry |
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International Journal of Environmental Analytical Chemistry,
Volume 47,
Issue 3,
1992,
Page 167-180
LindaB. Clark,
RobertT. Rosen,
ThomasG. Hartman,
JudithB. Louis,
I.H. Suffet,
R.L. Lippincott,
JosephD. Rosen,
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PDF (492KB)
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摘要:
Particle beam liquid chromatography/mass spectrometry (PB/LC/MS) was used to analyze finished drinking water for non-volatile organic compounds. 500 liters of finished water were extracted with an on-line continuous liquid/liquid extractor with dichloromethane at pH 7.4. PB/LC/MS was an excellent tool to detect and identify ng/L concentrations of alkylphenol polyethoxylates (n= 3−8), materials which went undetected by on-column gas chromatography/mass spectrometry. In addition, alkylphenol polyethoxylate carboxylates with 2–7 degrees of ethoxylation could be detected without chemical derivatization.
ISSN:0306-7319
DOI:10.1080/03067319208027027
出版商:Taylor & Francis Group
年代:1992
数据来源: Taylor
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3. |
Measurement of Bimolecular Rate Constantskiof the Cholinesterase Inactivation Reaction by 55 Insecticides and of the Influence of Various Pyridiniumoximes onki |
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International Journal of Environmental Analytical Chemistry,
Volume 47,
Issue 3,
1992,
Page 181-200
P. Herzsprung,
L. Weil,
R. Niessner,
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PDF (917KB)
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摘要:
The cholinesterase (ChE) inhibition test is a biochemical method for screening insecticides. The possibilities for the detection of different cholinesterase inhibiting substances were investigated.
ISSN:0306-7319
DOI:10.1080/03067319208027028
出版商:Taylor & Francis Group
年代:1992
数据来源: Taylor
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4. |
High Resolution PCB Analysis of Kanechlor, Phenoclor and Sovol Mixtures Using Multidimensional Gas Chromatography |
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International Journal of Environmental Analytical Chemistry,
Volume 47,
Issue 3,
1992,
Page 201-215
N. Kannan,
D.E. Schulz-bull,
G. Petrick,
J.C. Duinker,
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PDF (630KB)
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摘要:
Kanechlor-300, -400, -500 and -600, Phenoclor DP-3, -4, -5 and -6 and Sovol mixtures were analyzed for their chlorobiphenyl (CB) composition using high-resolution one-dimensional and multidimensional gas chromatography-electron capture detection (MDGC-ECD) techniques. The congener patterns of tested Kanechlor and Phenoclor mixtures resembled Aroclor 1016, 1242, 1254 and 1260. However, differences in the percentage contribution of minor constituents were noticed among these mixtures, which could be due to variations in the boiling-point fractionation of these commercial products. CB pattern of Sovol was different from the rest of the mixtures tested. It showed a composition in between ca. 30%, 40%, 50% and 60% overall chlorine levels. MDGC-ECD study showed the presence of hitherto unnoticed non-CB compounds coeluting with CBs in some commercial PCBs. The use of these mixtures as quantitation standards should be considered with caution. CB patterns of Sovol and a water extract of the Gulf of Finland matched closely, indicating a point source contamination to these waters.
ISSN:0306-7319
DOI:10.1080/03067319208027029
出版商:Taylor & Francis Group
年代:1992
数据来源: Taylor
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5. |
Editorial board page for “International Journal of Environmental Analytical Chemistry”, Volume 47, Number 3 |
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International Journal of Environmental Analytical Chemistry,
Volume 47,
Issue 3,
1992,
Page -
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PDF (253KB)
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摘要:
This is a scanned image of the original Editorial Board page(s) for this issue.
ISSN:0306-7319
DOI:10.1080/03067319208027025
出版商:Taylor & Francis Group
年代:1992
数据来源: Taylor
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