Microplastics in indoor and outdoor environments in China: Characteristic and human exposure risk assessment.

Human exposure to microplastics (MPs) has led to global health concerns, but our knowledge of the characteristics and human exposure of airborne MPs is limited. Adults may have different exposure patterns and lifestyles from other age groups. Therefore, this study aims to determine the MPs exposure among adults at various locations and during different time periods.

Analytical methods, source, concentration, and human risks of microplastics: a review.

Microplastics (MPs) as an atmospheric pollutant are currently receiving widespread attention. Although atmospheric MPs have been extensively studied, due to different research methods, systematic comparisons of atmospheric MPs are still needed. This review critically reviewed the analytical methods, research status and potential human exposure.

Oxidative potential associated with reactive oxygen species of size-resolved particles: The important role of the specific sources.

Oxidative potential (OP) is a predictor of particulate matter (PM) toxicity. Size-resolved PM and its components that influence OP values can be generated from several sources. However, There is little research have attempted to determine the PM toxicity generated from specific sources.

Shift in microorganism and functional gene abundance during completely autotrophic nitrogen removal over nitrite (CANON) process.

Nitrification-denitrification process has failed to meet wastewater treatment standards. The completely autotrophic nitrite removal (CANON) process has a huge advantage in the field of low carbon/nitrogen wastewater nitrogen removal. However, slow start-up and system instability limit its applications.

Oxidative potential, environmentally persistent free radicals and reactive oxygen species of size-resolved ambient particles near highways.

Particulate matter (PM) is a group of atmospheric pollutants with an uncertain toxicity, particularly when collected near highways. This study examined the oxidative potential (OP) of, as well as the environmentally persistent free radicals (EPFRs) and reactive oxygen species (ROS) present in PM samples collected near highways in Xiamen, China. Our findings revealed that PM had a relatively high OP, ranging from 3.

The overlooked formation of environmentally persistent free radicals on particulate matter collected from biomass burning under light irradiation.

Background: The illumination process may be an important contributor to environmentally persistent free radicals (EPFRs) in atmospheric particles, but the ability of light to generate EPFRs in combustion products remains unclear.

Objective: This paper studies the characteristics and formation mechanism of EPFRs in combustion particles after photoexcitation.

Method: The secondary photochemical processes and the generation and decay capability of EPFRs in size-resolved (<10 µm) biomass combustion particles were analysed by electron paramagnetic resonance (EPR) spectroscopy.

Effect of PM characterization on PM oxidative potential by acellular assays: a review.

The health risks brought by particles cannot be present via a sole parameter. Instead, the particulate matter oxidative potential (PM OP), which expresses combined redox properties of particles, is used as an integrated metric to assess associated hazards and particle-induced health effects. OP definition provides the capacity of PM toward target oxidation.

Quantification of synergistic, additive and antagonistic effects of aerosol components on total oxidative potential.

The interaction-based oxidative potential (OP) represents the prediction of binary mixture effects distinguishing from linear additivity by including information on binary mixtures among PM components. The objective of this work is to develope a reliable estimate on the possible synergistic or antagonistic possibility of binary PM components and to quantify the combined effect. We firstly assessed the interactions among PM components in generating the OP based on DTT consumption rate and AA depletion.

Experimental and Theoretical Studies on the Influence of Carrier Gas for COS Catalytic Hydrolysis over MgAlCe Composite Oxides.

Catalytic hydrolysis of carbonyl sulfide (COS) over metal frameworks derived MgAlCe composite oxides catalyst is investigated under N and CO atmosphere. A combination of experimental and theoretical methods, including in situ IR, X-ray photoelectron spectroscopy, and density functional theory calculations, is used to explain the difference of catalytic activity. Research results indicate that M-OH groups play the most important role in COS hydrolysis, but the distribution of the M-OH groups is affected by CO.

Size-resolved particle oxidative potential in the office, laboratory, and home: Evidence for the importance of water-soluble transition metals.

Particulate matter (PM) oxidative potential (OP) is an emerging health metric, but studies examining the OP of indoor PM are rare. This paper focuses on the relationships between respiratory exposure to OP and PM water-soluble composition in indoor environments. Size-resolved PM samples were collected between November 2015 and June 2016 from an office, home (including bedroom, living room, and storeroom), and laboratory using a MOUDI sampler.

Social Media Users' Perception of Telemedicine and mHealth in China: Exploratory Study.

Background: The use of telemedicine and mHealth has increased rapidly in the People's Republic of China. While telemedicine and mHealth have great potential, wide adoption of this technology depends on how patients, health care providers, and other stakeholders in the Chinese health sector perceive and accept the technology.

Objective: To explore this issue, we aimed to examine a social media platform with a dedicated focus on health information technology and informatics in China.

Comparisons of combined oxidant capacity and redox-weighted oxidant capacity in their association with increasing levels of FeNO.

Background: Some ozone (O) and nitrogen dioxides (NO) health effects studies use O (sum value) as a surrogate. However, little is known about how this related to O (weighted value).

Objective: We investigated the effects of redox-weighted oxidant capacity (O) on fractional exhaled nitric oxide (FeNO), a biomarker of airway inflammation, in a set of chronic obstructive pulmonary disease (COPD) patients.

Short-term effect of air pollution on asthma patient visits in Shanghai area and assessment of economic costs.

Backgrounds: Shanghai, in China, is one of the highest incidence cities for asthma morbidity. However, few studies have systemically explored the association of ambient air pollutants and asthma patients with economic costs.

Objectives: The study researched the link of short-term ambient air pollutants exposure and asthma patients in Shanghai.

Particle Size Distributions of Oxidative Potential of Lung-Deposited Particles: Assessing Contributions from Quinones and Water-Soluble Metals.

Redox-active species in ambient particulate matter (PM) cause adverse health effects through the production of reactive oxygen species (ROS) in the human respiratory tract. However, respiratory deposition of these species and their relative contributions to oxidative potential (OP) have not been described. Size-segregated aerosols were collected during haze and nonhaze periods using a micro-orifice uniform deposit impactor sampler at an urban site in Shanghai to address this issue.

Air pollutants and asthma patient visits: Indication of source influence.

Background: Sources of air pollutants are significant factors for adverse health effect. Few current studies explored the linking of sources influence and ambient pollutants to asthma patient visits in Shanghai, China.

Objectives: This study explored the associations between short-term exposures to ambient pollutants and asthma morbidity with terrestrial and marine source influence in Shanghai.

Highly selective removal of Zn(II) ion from hot-dip galvanizing pickling waste with amino-functionalized Fe3O4@SiO2 magnetic nano-adsorbent.

Amino-functionalized Fe3O4@SiO2 magnetic nano-adsorbent was used as a novel sorbent to highly selective removal of Zn(II) ion from hot-dip galvanizing pickling waste in the presence of Fe(II). These hot-dip galvanizing pickling waste mainly contain ZnCl2 and FeCl2 in aqueous HCl media. The properties of this magnetic adsorbent were examined by transmission electron microscopy (TEM), powder X-ray diffraction (XRD), infrared spectrometer (FT-IR) and BET surface area measurements.

Two polymorphs of cobalt(II) imidazolate polymers synthesized solvothermally by using one organic template N,N-dimethylacetamide.

Two structurally different polymorphs of cobalt(II) imidazolate frameworks are solvothermally synthesized by using N,N-dimethylacetamide as a template: The polymorph 6 (a = 9.797 (4) angstroms, b = 15.301(6) angstroms, c =14.