Sources and distribution of aliphatic and polyaromatic hydrocarbons in sediments of Jiaozhou Bay, Qingdao, China

Wang, Xu-Chen; Sun, Song; Ma, Haiqing; Liu, Ying

doi:10.1016/j.marpolbul.2005.08.010

Cited by 214 publications

(65 citation statements)

References 40 publications

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“…The CPI [24][25][26][27][28][29][30][31][32][33][34] values (1.7-4.3; Supplemental Data, Table S2) in the present study were greater than 1 but lower than those of typical terrestrial higher plants (5-10) [31], suggesting additional contributions from other sources. In the present study, the addition of biogenic hydrocarbons from submerged or floating macrophytes to terrestrial plants was suggested by the aquatic macrophyte n-alkane proxy ((n-C 23 þn-C 25 )/(n-C 23 þn-C 25 þ n-C 29 þn-C 31 )) values (0.16-0.26; Supplemental Data, Table S2).…”

Section: Use Of Geochemical Markers To Trace Organic Pollutioncontrasting

confidence: 47%

“…Aliphatic hydrocarbons in the present study were of mainly biogenic origin, as suggested by low L/H (0.04-0.54 with a mean of 0.21) and high carbon preference index (CPI [26][27][28][29][30] Table S5.…”

Section: Biogenic Hydrocarbonsmentioning

confidence: 61%

“…The difference between the measured and prepared concentrations of the target analytes must be less than 20% before sample analysis. For field samples, the recoveries of the n-alkane and LAB surrogate standards, tetracosane-d 50 and 1-phenyldodecane-d 30 , were 70 AE 4% and 61 AE 12%, respectively, whereas those of the PAH surrogate standards, naphthalene-d 8 , acenaphthene-d 10 , phenanthrene-d 10 , and chrysene-d 12 , were 50 AE 15%, 65 AE 18%, 100 AE 21%, and 99 AE 15%, respectively. The recoveries of the same surrogate standards in quality assurance and quality control samples were 61 AE 5%, 75 AE 20%, 41 AE 5%, 53 AE 6%, 74 AE 12%, and 130 AE 9%, respectively.…”

Section: Quality Assurance and Quality Controlmentioning

confidence: 97%

“…After spiking with known amounts of surrogate standards (tetracosane-d 50 for n-alkanes; 1-phenyldodecane-d 30 for LABs; naphthalene-d 8 , acenaphthene-d 10 , phenanthrened 10 , chrysene-d 12 , and perylene-d 12 for PAHs), a set of 15 field samples along with one procedural blank, spiked blank, matrix blank, and matrix-spiked blank was subjected to Soxhlet extraction with 200 ml of a hexane:acetone (1:1 in volume) mixture for 48 h. Copper sheets were added to the solvent mixture to remove elemental sulfur. Purification/fractionation procedures to collect n-alkanes [21], LABs [11], and PAHs [12] were followed as outlined in previous studies.…”

Section: Sample Collection and Extractionmentioning

confidence: 99%

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Application of multiple geochemical markers to investigate organic pollution in a dynamic coastal zone

Liu

Wang

Wong

et al. 2012

Environmental Toxicology and Chemistry

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Abstract-Multiple geochemical markers, including aliphatic hydrocarbons (n-alkanes), linear alkylbenzenes (LABs), and polycyclic aromatic hydrocarbons (PAHs), were employed to relate sediment organic chemical pollution in the coastal zone off South China to socioeconomic development there. Concentrations of Sn-C 15-35 (n-alkanes with 15-35 carbon atoms), SLAB (sum of C 10 to C 13 LABs), and S 26 PAH (sum of 26 PAH compounds) ranged from 110 to 3,160, 11 to 160, and 26 to 600 ng/g, with medians of 730, 40, and 230 ng/g, respectively. Natural hydrocarbons were mainly derived from terrestrial higher plant waxes, and in minor amounts from aquatic plankton and bacteria.

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Section: Use Of Geochemical Markers To Trace Organic Pollutioncontrasting

confidence: 47%

Section: Biogenic Hydrocarbonsmentioning

confidence: 61%

Section: Quality Assurance and Quality Controlmentioning

confidence: 97%

Section: Sample Collection and Extractionmentioning

confidence: 99%

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Application of multiple geochemical markers to investigate organic pollution in a dynamic coastal zone

Liu

Wang

Wong

et al. 2012

Environmental Toxicology and Chemistry

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“…One approach to understand sources and fate mechanisms of OM accumulated in sediments and soils is to utilize a molecular organic geochemical method, where n-alkanes, pristane (Pr), phytane (Ph), the unresolved complex mixture (UCM), alkylated polycyclic aromatic hydrocarbons (PAHs), hopane and sterane are used for the source identification of the OM (Yunker et al, 2002b;Kimbrough and Dickhut, 2006;Wang et al, 2006;Hu et al, 2009;Tolosa et al, 2009;Wang et al, 2011). These biomarkers, combined with total organic carbon (TOC), total nitrogen (TN), the soils can provide robust and powerful proxies for the distinguishing of the OM contributions from natural or anthropogenic sources (Wang et al, 2003;Tanner et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

Lin

et al. 2013

Marine Pollution Bulletin

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a b s t r a c tTotal organic carbon, total nitrogen, d 13 C org , d 15 N, and aliphatic and polyaromatic hydrocarbons of fiftyfive soil samples collected from the coastal wetlands of the Liaohe Delta were measured, in order to determine the sources and possible preservation of organic matter (OM). The d 15 N and d 13 C org values in the samples ranged from 3.0‰ to 9.4‰ and from À30.4‰ to À20.3‰, respectively, implying that the OM in the soils is predominantly derived from C 3 plant. The long-chain n-alkanes had a strong odd-over-even carbon number predominance, suggesting a significant contribution from waxes of higher plants. The ubiquitous presence of unresolved complex mixture, alkylated polycylic aromatic hydrocarbons and typical biomarkers of petroleum hydrocarbons (pristane, phytane, hopanes and steranes) indicates that there is a contribution of petroleum hydrocarbons to the organic carbon pool in the wetland soils. P. australis-vegetated wetlands have strong potentials for the preservation of organic carbon in the wetlands.

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Assessment of Metal Contamination in Surface Sediments of Jiaozhou Bay, Qingdao, China

Wang

Feng

Qing

2007

CLEAN Soil Air Water

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An assessment of metal contamination in surface sediments of the Jiaozhou Bay, Qingdao, one of the rapidly developing coastal economic zones in China, is provided. Sediments were collected from 10 stations and a total of 15 heavy metals were analyzed. Concentrations of metals show significant variability and range from 210 to 620 ppm for Ti, 2.7 to 23 ppm for Ni, 4.2 to 28 ppm for Cu, 5.2 to 18 ppm for Pb, 12 to 58 ppm for Zn, 0.03 to 0.11 ppm for Cd, 5 to 51 ppm for Cr, 1.5 to 9.9 ppm for Co, 5.3 to 19 ppm for As, 12 to 32 ppm for Se, and 19 to 97 ppm for Sr. Based on concentration relationships and enrichment factor (EF) analyses, the results indicate that sediment grain size and organic matter played important roles in controlling the distribution of the heavy metals in surface sediments of the Jiaozhou Bay. The study shows that the sediment of the Jiaozhou Bay has been contaminated by heavy metals to various degrees, with prominent arsenic contributing the most to the contamination. The analysis suggests that the major sources of metal contamination in the Jiaozhou Bay are land-based anthropogenic ones, such as discharge of industrial waste water and municipal sewage and run-off. Notably, the elevated heavy metal concentrations of the Jiaozhou Bay sediments could have a significant impact on the bay's ecosystem. With the rapid economic development and urbanization around the Jiaozhou Bay, coastal management and pollution control should focus on these contaminant sources, as well as provide ongoing monitoring studies of heavy metal contamination within the bay. IntroductionEstuarine and coastal sediments are an important repository for metal pollutants that enter the sea. In aquatic environments, many heavy metals are transported predominantly in association with particulate matter, and consequently, a high concentration of heavy metals is often detected in sediments in many industrialized harbors and coastal regions around the world [1 -6]. Although metals are present naturally in the environment, excessive amounts of heavy metals are entering the coastal environment as contaminants from anthropogenic sources such as industrial processes, including untreated waste water, municipal sewage effluent, and surface run-off.A trace amount of metals is essential for providing the micronutrients necessary for the growth of many marine organisms. However, an excessive amount of heavy metals in the coastal environment is considered toxic to marine life [7 -9]. Thus, high concentrations of heavy metals found in coastal waters and sediments have raised serious environmental concerns not only for the marine ecosystems but also for humans [10 -13].Over the last decade in China rapid economic development and urbanization have resulted in a large impact on the environment especially along the coast. For example, it has been reported that harmful algal blooms have occurred more frequently in recent years along China's eastern coast as a consequence of the direct discharge of nutrient-rich waste water (www.china-hab.cn). In re...

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Sources and distribution of aliphatic and polyaromatic hydrocarbons in sediments of Jiaozhou Bay, Qingdao, China

Cited by 214 publications

References 40 publications

Application of multiple geochemical markers to investigate organic pollution in a dynamic coastal zone

Application of multiple geochemical markers to investigate organic pollution in a dynamic coastal zone

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

Assessment of Metal Contamination in Surface Sediments of Jiaozhou Bay, Qingdao, China

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