[Pollution Characteristics and Sources of Water-soluble Ions in PM in Zhengzhou City].

In order to explore the pollution characteristics, seasonal variations, and sources of water-soluble inorganic ions (WSIIs) in PM in Zhengzhou, PM samples were seasonally collected from December 2020 to October 2021; then, combining gaseous pollutants (SO, NO, and O) and meteorological parameters (temperature and relative humidity), nine WSIIs (NO, NH, SO, Ca, K, Na, Mg, F, and Cl) were analyzed. The results showed that the annual average concentration of the total water-soluble ions (TWSIIs) was (39.34±21.

[Air Pollution Characteristics and Quantitative Evaluation of Multi-scale Transport in the Beijing-Tianjin-Hebei Region in January, 2016].

Based on atmospheric monitoring data and the WRF-CAMx model, this study analyzed the characteristics of air pollution and performed a quantitative assessment of PM cross-border transport in the Beijing-Tianjin-Hebei (BTH) region in January 2016. The results showed that the average concentrations of PM, PM, SO, NO, and CO were 89.5 μg·m, 135.

Comparison among soil additives for enhancing Pteris vittata L.: Phytoremediation of As-contaminated soil.

Pot experiments were conducted to assess the effects of monoammonium phosphate (NHHPO) and citric acid (CA) on the arsenic uptake of Chinese brake fern (Pteris vittata L. in two typical arsenic-contaminated soils i.e.

[Effects of water stress on protein expression and physiological properties of different genotype wheat (Triticum aestivum L.) sprouts].

With drought-resistant wheat (Triticum aestivum) cultivar Changwu 134 and drought-sensitive cultivar Zhengyin 1 as test materials, and by using -1.2 MPa PEG 6000 to treat their seeds, this paper studied the protein expression and physiological properties of the sprouts under different soil moisture conditions. SDS-PAGE analysis showed that water stress induced the production of two new proteins with molecular weights of 39.

[Investigations of microscopic morphology of individual inhalable particulates in Macao in summer].

By means of high resolution field emission scanning electron microcopy (FESEM) and image analysis (IA), microscopic morphologies and the number-size and volume-size distributions of different types of individual inhalable particles collected in Macao in summer of 2007 were investigated. The results showed that the soot aggregates and mineral particles were ubiquitous in the PM10 of Macao in July, 2007. The mineral particles mostly showed an irregular morphology and the soot aggregates displayed chain-like and fluffy morphology.

[Morphology and bioreactivity of PM10 in air of Zhengzhou].

PM10 was collected at the urban and suburban sites of Zhengzhou city during autumn. High solution field emission scanning electron microscopy (FESEM) and image analysis (IA) were used to analyse the morphology and size distribution of individual particles in PM10. Plasmid DNA assay was employed to investigate the bioreactivity of PM10.

[Physical and chemical characteristics of individual mineral particles in an urban fog episode].

Field emission scanning electron microscopy (FESEM) and scanning electron microscopy with energy dispersive X-ray detector (SEM-EDX) were used to study the four aerosol samples collected in Beijing air during the fog and non-fog episodes in winter. Size-distribution of mineral particles in fog sample displayed two major peaks at the size range of 0.1-0.