Identifiering av oljespill - Vattenburen petroleum och petroleumprodukter - Del 2: Analytisk metodik och tolkning av resultat baserat på analyser med GC-FID och lågupplösande GC-MS
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Identifiering av oljespill - Vattenburen petroleum och petroleumprodukter - Del 2: Analytisk metodik och tolkning av resultat baserat på analyser med GC-FID och lågupplösande GC-MS
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This document specifies a method to identify and compare the compositional characteristics of oil samples. Specifically, it describes the detailed analytical and data processing methods for identifying the characteristics of spill samples and establishing their correlation to suspected source oils. Even when samples or data from suspected sources are not available for comparison, establishing the specific nature (e.g. refined petroleum, crude oil, waste oil, etc.) of the spilled oil still helps to constrain the possible source(s).
This methodology is restricted to petroleum related products containing a significant proportion of hydrocarbon-components with a boiling point above 150 °C. Examples are: crude oils, higher boiling condensates, diesel oils, residual bunker or heavy fuel oils, lubricants, and mixtures of bilge and sludge samples, as well as distillate fuels and blends. While the specific analytical methods are perhaps not appropriate for lower boiling oils (e.g. kerosene, jet fuel, or gasoline), the general concepts described in this methodology, i.e. statistical comparison of weathering-resistant diagnostic ratios, are applicable in spills involving these kinds of oils.
Paraffin based products (e.g. waxes, etc.) are outside the scope of this method because too many compounds are removed during the production process [37]. However, the method can be used to identify the type of product involved.
Although not directly intended for identifying oil recovered from groundwater, vegetation, wildlife/tissues, soil, or sediment matrices, they are not precluded. However, caution is needed as extractable compounds can be present in these matrices that alter and/or contribute additional compounds compared to the source sample. If unrecognized, the contribution from the matrix can lead to false “non-matches”. It is therefore advisable to analyse background sample(s) of the matrix that appear unoiled.
When analysing “non-oil” matrices additional sample prepar ...
Identifiering av oljespill - Vattenburen petroleum och petroleumprodukter - Del 2: Analytisk metodik och tolkning av resultat baserat på analyser med GC-FID och lågupplösande GC-MS
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Internationell titel: Oil spill identification - Petroleum and petroleum related products - Part 2: Analytical method and interpretation of results based on GC-FID and GC-low resolution-MS analyses
Artikelnummer: STD-80041987
Utgåva: 1
Fastställd: 2023-04-03
Antal sidor: 224
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