Source diagnostic and weathering indicators of oil spills utilizing bicyclic sesquiterpanes

WANG Chuanyuan; HU Xiaoke; HE Shijie; LIU Xin; ZHAO Mingming

doi:10.1007/s13131-013-0344-y

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Article Navigation > Acta Oceanologica Sinica > 2013 > 32(8): 79-84

WANG Chuanyuan, HU Xiaoke, HE Shijie, LIU Xin, ZHAO Mingming. Source diagnostic and weathering indicators of oil spills utilizing bicyclic sesquiterpanes[J]. Acta Oceanologica Sinica, 2013, 32(8): 79-84. doi: 10.1007/s13131-013-0344-y

Citation:

WANG Chuanyuan, HU Xiaoke, HE Shijie, LIU Xin, ZHAO Mingming. Source diagnostic and weathering indicators of oil spills utilizing bicyclic sesquiterpanes[J]. Acta Oceanologica Sinica, 2013, 32(8): 79-84. doi: 10.1007/s13131-013-0344-y

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Source diagnostic and weathering indicators of oil spills utilizing bicyclic sesquiterpanes

doi: 10.1007/s13131-013-0344-y

1.
Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
2.
College of Geography and Planning, Ludong University, Yantai 264025, China

Received Date: 2012-04-20
Rev Recd Date: 2012-12-22

Abstract

Abstract

Bicyclic Sesquiterpanes (BSs) are ubiquitous components of crude oils and ancient sediments. BSs in crude oils and diesel oil were identified and characterized, the effects ofmoderate weathering on BS distributions were discussed, and amethodology using diagnostic indices of BSswas developed for oil correlationand differentiation. The results showed that crude oils and oil products had different abundances and distributions of BSs and, consequently, resulted in different diagnostic ratios. The selected diagnostic ratio indices of BSs, such as BS4/BS5 (ratio of 4,4,8,9,9-pentamethyl-decahydronaphthalene to 8β(H)-drimane), BS6/BS5 (ratio of 4,4,9,9,10-pentamethyl-decahydronaphthalene to 8β(H)-drimane), BS8/BS9 (ratio of the second peak to the third peak of C16 sequiterpane), and BS8/BS10 (ratio of C16 sequiterpane to 8β(H)-homodrimane), still maintained better stabilities (%RSD < 5%) after weathering for 30 d. The longer weathering process (150 d) had some effect on such ratios (5% < %RSD < 10%). The facts of the uniqueness, abundance in petroleum, and chemical stability of BSs enable them to be suitable as an effective diagnostic means for identifying spilled oil with moderate weathering, particularly for lighter refined product samples that are difficult to identify by current techniques.
- bicyclic sesquiterpanes,
- distribution,
- diagnostic indices,
- weathering,
- oil spill source identification

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References(16)

References

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