Abstract Online monitoring concentrations of PM at five sites were obtained from 01/01/2016 to 31/12/2016 in Laiwu, China, and 2.5 filters manually sampled for total 34 days the same four seasons 2016. pollution sources, including soil dust, urban construction coal-fired power plants steel plant dust motor vehicle exhaust sampled, respectively. The overall mean /PM 10 ratio (0.57) Laiwu was a relatively lower level compared with that other Chinese cities, which higher winter, indicating fine...

56 VOCs were monitored for a whole year in refinery vicinity area suburban of Jinan, as well PM2.5, PM10, and ozone. The results particulate matters showed that January was the most polluted month during sampling period, possibly resulting from coal burning district heating period Jinan. According to concentration profiles monthly variety ambient pollutants, change certain extent positive correlation with PM2.5 while negative It found average total 50.58 µg m–3 ethane ethene abundant VOC...

Abstract Dust can be regarded as environmental medium that indicates the level and spatial distribution of polycyclic aromatic hydrocarbons (PAHs) coming from different pollution sources. In this study, samples including road dust, roof bare soil near an iron steel enterprise (ISE) in Laiwu city North China were collected. To assess environment impact, atmosphere particulates one flue dust a coking plant simultaneously sampled. Sixteen USEPA PAHs detected quantitatively by Gas Chromatography...

To better understand the pollution characteristics and formation mechanisms of atmospheric carbonyl compounds, continuous measurements compounds in Jinan were taken for one month at a sampling frequency 2 h. The sources, characteristics, concentration changes during summers 2018 2020 compared. total concentrations 10.51 ± 0.13 ppbV 6.30 1.08 2020, respectively. In both years, formaldehyde, acetone, acetaldehyde major carbonyls. Diurnal variations correlation analyses showed that exhaust...

Molecular dynamics simulation method was used to study the aggregation of Na and Ca salts in different concentrations Naphthalene-dipeptide (2NapFF) solutions. The results show that high-valence Ca2+ triggers formation a gel at certain dipeptide concentration, low-valence Na+ system follows law general surfactants. also hydrophobic electrostatic forces are main driving for aggregates, hydrogen bonds do not play major role solution aggregates. Hydrophobic effects gels solutions triggered by...

Download ash and emission dust samples were collected from sintering, coking, ironmaking steelmaking processes of iron steel enterprises in Laiwu. Sixteen kinds polycyclic aromatic hydrocarbons (PAHs) the United States Environmental Protection Agency (USEPA) priority controlled lists quantitatively analyzed using Gas Chromatography-Mass Spectrometer (GC-MS). Laser particle size analyzer was used to obtain distribution pattern download ash. It found that diameter four production quite...

Urbanization in China has entered a stage of accelerated development that is accompanied by range issues concerning resource, ecological and society. Urban vegetable production (UVP), an important part urban agriculture, the potential to be effective countermeasure for dealing with these problems. Here, we review current state UVP its related technology equipment, show major models three representative implementation cases Beijing. Through this review, found impact on supply should not...

To better understand the characteristics and processes of ozone formation over industrial cluster China, intensive field measurements atmospheric O 3 , volatile organic compounds (VOCs), related parameters were conducted in a typical industrialized city Zibo, from July 1 to 31, 2018.Monitoring data comparison with other observations revealed severe pollution Zibo high frequency (~55%) non-attainment episodes average levels (~42 ppbv).An observation-constrained chemical box model (OBM) was...

Abstract. Atmospheric α-pinene is one of the most important precursors secondary organic aerosols (SOA). The formation derived SOA strongly affected by NOx. However, we still do not comprehensively understand effects NOx on formation. Therefore, conducted photooxidation experiments in an atmospheric chamber at different concentrations. yields increased with concentration under low-NOx conditions, but were suppressed high-NOx conditions. maximum 8.0 % and 26.2 low- high-volatility compound...

Ambient PM2.5 samples were collected in Laiwu, a small industrial city China known for steel production, to measure and evaluate the mass concentrations of inorganic water-soluble ions (IWS ions). The highest value recorded was 251.28 μg/m3, which occurred during winter lower than other major Chinese cities. spatial distribution showed that center city, is connected downtown area, heavily polluted (170 μg/m3 higher) compared suburbs. With exception winter, weight dominated by IWS ions, with...

An effective integrated teaching Management Model of college is proposed. Moddle, an opened course management system, used to build the PLA-based managing platform. Based on this platform, administration management, classroom monitoring, class network courses laboratory construction group and personal or organizational knowledge for teachers students are all impossible be well supported. After practical research about one year long time, it illustrated that platform can effectively...

Urban ozone (O 3 ) pollution has become a prominent environmental threat to public health while the relationship between O formation and driving factors remains elusive, particularly for megacities in Shandong Peninsula of China. In this study, we use intensive ambient measurements trace gases comprehensively investigate magnitude Jinan city from 2013 2020. Further, emission inventory OMI NO 2 columns are used probing changes precursor emissions. Ground-level indicate degraded air quality...

The distribution and composition of the 17 organochlorine pesticides (OCPs) in selected samples were investigated with gas chromatography coupled Agilent triple quadrupole mass spectrometer (GC-MS).Only DDT has highest detection rate 100% within one year period.The total residual concentrations OCPs ranged from 0.1794 to 4.6479 ng/L, a mean concentration 2.7516 ng/L and1.3627ng/L dry wet seasons, respectively.The detected was far below maximum allowable limits drinking water sources...