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Emission Characteristics of Intermediate-Volatility Organic Compounds in Petrochemical Industrial Area
ZHANG Feng, LU Sihua, LI Congyi, SHAO Min, LI Yue, LÜ Daqi, LI Xin, LIU Ying
Acta Scientiarum Naturalium Universitatis Pekinensis    2023, 59 (2): 281-289.   DOI: 10.13209/j.0479-8023.2022.123
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A typical petrochemical industrial area was selected as the research object, and particulate phase and gas phase samples of intermediate-volatility organic compounds (IVOCs) were collected in the air of the plant area in summer (July and August in 2021) to explore the pollution characteristics of IVOCs emission from petrochemical industrial sources and estimate their corresponding SOA (secondary organic aerosols) formation potential. The results show that, 1) the average concentration of IVOCs particle phase in typical petrochemical area is 4.22±1.54 μg/m3, and the average concentration of IVOCs gas phase is 108.87±78.93 μg/m3. The average concentration of IVOCs during the day is higher than that at night both in the gas phase and in the particle phase. 2) The n-alkanes in gas phase are concentrated from C12 to C22, while the n-alkanes in particle phase are concentrated from C22 to C35. The gas phase of polycyclic aromatic hydrocarbons is concentrated in naphthalene and phenanthrene, and the particle phase is concentrated in fluorene. 3) The IVOCs in the petrochemical industrial zone are quantitatively disassembled. The concentration is mainly concentrated in the interval B18–B21. The mass concentration sum of these four zones accounts for 60.41% of the total mass of IVOCs.
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Research on Place Involvement in Wildlife Tourism: A Case Study of Dolphin Discovery Center in Bunbury, Australia
Li CONG, Bihu WU, Yujun ZHANG, Newsome Daivd
Acta Scientiarum Naturalium Universitatis Pekinensis    2017, 53 (4): 715-721.   DOI: 10.13209/j.0479-8023.2017.064
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Involvement is one of the important dimensions to understand tourists’ purchase decisions; hence the research on place involvement will help to understand the rule of the tourist behavior and revisit characteristics. This research aimed to analyze the place involvement of tourists in Dolphin Discovery Center (DDC) Bunbury, West Australia. K-Means clustering analysis method, variance analysis and Sheffe post-test were combined to examine the extent of place involvement for DDC and demographic differences. The main conclusions were as following: based on different place involvement degree, wildlife tourists were divided into deep place involvement, medium place involvement, and light place involvement; tourist involvement in the wildlife tourism place was deep for the overall sample; demographic characteristics, age and education degree had significant differences (p≤ 0.05), while gender, income and family had no significant difference; stay time, consumption in site, information sources and satisfaction had significant difference in place involvement (p ≤ 0.05). Additionally, the conclusions from this research can provide guidance and applicance to wildlife conservation, destination management and marketing.

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Risk Perception of Interaction with Dolphin in Bunbury, West Australia
Li CONG, Bihu WU, Yujun ZHANG, Newsome David
Acta Scientiarum Naturalium Universitatis Pekinensis    2017, 53 (1): 179-188.   DOI: 10.13209/j.0479-8023.2016.040
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This research aims to analyze the risk perception of tourists in Dolphin Discovery Center (DDC) Bunbury, West Australia and serves for the destination a management and marketing. Factor analysis, K-Means cluster analysis and variance analysis were combined to examine the extent of risk perception for DDC and demographic differences. The main conclusions were as following: three factors that tourism experience quality, physical safety, and amenity were extracted based on the exploring factor analysis; according to the extent of risk perception, wildlife tourists had been divided into three categories: weak risk awareness, medium risk perception, and strong risk perception. Wildlife tourists perceived experience quality risk as the strongest factor and physical safety as the weakest factor, and amenity risk was in an intermediate position. Independent-sample t test and variance analysis were used to examine the demographic difference in risk perception and the results showed that different age, income and family status all had significant difference in risk perception except gender; tourism experience, travelling companion, expenditure and staying time and other tourism behavior all had significant difference in risk perception as well as satisfaction and willingness to revisit, except for information source.

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