sp. nov., a poly--hydroxybutyrate-producing, halotolerant bacterium isolated from coral sediment in the Dapeng peninsula (Guangdong, China).

A Gram-stain-negative, strictly aerobic, motile, flagellated, rod-shaped, halotolerant, and poly--hydroxyalkanoate-producing bacterium, designated DP4N28-3, was isolated from offshore sediment surrounding hard coral in the Dapeng peninsula (Guangdong, PR China). Growth occurred at 15-35 °C (optimal at 30 °C), pH 6.0-9.

[Emission Characteristics of Gas-and Particle-Phase Polycyclic Aromatic Hydrocarbons from Cooking].

Polycyclic aromatic hydrocarbons (PAHs) play a key role in the formation of secondary organic areole and ozone. This study sampled three commercial Chinese restaurants and a food plant in Shenzhen to analyze the emission characteristics of PAHs, especially the alkyl PAHs in both gas and particle phases. The results showed that the (total PAHs)in the particle and gas phase were (1381.

[Review of Screening and Applications of Organic Tracers in Fine Particulate Matter].

Specific organic compounds within atmospheric particulate matter are indicators of specific pollution sources and, as such, can be used to differentiate inputs from various air pollution emissions sources in urban areas. Therefore, many studies have been conducted to detect organic particulate matter and screen the associated organic tracers that provide provenance information. This review provides a brief summary of the emission characteristics of biomass burning, cooking, fossil fuel combustion, and traffic.

[Emission Characteristics of Particulate Organic Matter from Cooking].

Cooking is an important source of atmospheric particulate organic matter (POM). In this study, four Chinese restaurants in Shenzhen (west style, dim-sim restaurant, worker's canteen, and Korean cuisine) were sampled to examine the chemical composition of POM and research molecular tracers. The result showed that more than 60% of the PM mass was due to organic compounds.

[Hourly measurement on aerosol NH3 and gas NO(x) emission in the rice field].

Aerosol NH3 and gas NO(x) are the major components in atmospheric particles and precipitation, which are key precursors to form aerosols. The intensive N fertilization in arable land is an important source of aerosol NH3 and gas NO(x), which have not been well characterized yet. During May to October in 2010, the characteristics of aerosol NH3 and gas NO(x) emission from rice field after urea application were investigated.

[Pollution characteristics and health assessment of particulate mercury in Hebei rural households].

Environment problems in rural areas have been increasing dramatically in recent years. Atmospheric particulate mercury has posed increasingly obvious threats to human health. However, there were few studies attaching importance on mercury pollution in rural residential environment.

[In-situ measurement on volatilization loss of ammonia in the vegetable field and its influencing factors].

In order to obtain ammonia volatilization flux and volatilization loss rate in the vegetable field and investigate their relationship with environmental factors, an on-line monitoring system was used to measure the ammonia volatilization in the vegetable (Brassica rapa L. and lettuce) field after urea application during January to September, 2009. The system included a wind tunnel system, a gas collector and an online analyzer system with ion chromatography.

[Validation of a prediction method for indoor air pollution].

The validation study of the prediction method for indoor air pollution was carried out by comparing the results of emission models based on data obtained in a large and a small emission chamber, with actual measured concentrations. A new decorated room was studied as a case. Emissions of complicated objects and simple surface layer materials were studied respectively in the large and small chamber and emission models were developed.

Approach to and effectiveness of environmental risk education of public: case of indoor environmental risk consciousness in beijing.

Increasing concern regarding environmental risk in China has led to a need for education on environmental health and safety. In this paper, we report on four main ways to enhance environmental risk consciousness of the public. By investigating residents' indoor environmental risk consciousness in Beijing, we appraised the effectiveness of current environmental risk education approaches.