Detection of polycyclic aromatic hydrocarbons using a high performance-single particle aerosol mass spectrometer

Zhang, Yao; Pei, Chenglei; Zhang, Jinwen; Cheng, Chunlei; Lian, Xiufeng; Chen, Mubai; Huang, Bo; Fu, Zhong; Zhou, Zhen; Li, Mei

doi:10.1016/j.jes.2022.02.003

Cited by 11 publications

(3 citation statements)

References 63 publications

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“…Similarly, the adsorption trend of CBV H 3 PO 4 shows a sharp reduction to a level, and thereafter an increase was seen before an equilibrium point was reached. These observations are similar to [42][43][44][45] contact time, with a high number of active binding sites on the adsorbent's surfaces. The adsorption rate is rapid in this stage and the points to adsorption are being controlled by diffusion processes of paracetamol, salbutamol, and chlorpheniramine molecules from the bulk phase to the adsorbent surface.…”

Section: Adsorption Of Pah and Phacs From Industrial Wastewatersupporting

confidence: 86%

Adsorption Technique an Alternative Treatment for Polycyclic Aromatic Hydrocarbon (PAHs) and Pharmaceutical Active Compounds (PhACs)

Ogunlowo¹

2022

Wastewater Treatment

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Water is essential to human consumption; however, its pollution is caused by populace activities from both organic and inorganic compounds sources that require serious attention, to provide clean water. Organic contaminants are known as persistent organic pollutants (POP). They are accumulated in the fat tissues of wildlife and human beings and are toxic to their organs. Degradations of POP are very difficult since they are persistent and also termed as semi-volatile, for example, polycyclic aromatic hydrocarbons (PAHs). Apart from POPs, others toxic organic contaminants with subtle ecological effects are the emerging organic contaminants (EOCs), like pharmaceutical actives contaminants (PhACs). They penetrate the aquatic environment and alter the natural quality. To obtain future discharge requirements, new technologies with granular activated carbon were developed using Oxytenanthera abyssinica and Bambusa vulgaris in remediating PhACs and PAHs. The activated carbon with KCl had removal efficiency of 73.3, 78.1, and 86.2%, which indicated the highest efficiency for PhACs removal, while adsorbent activated with H3PO4 gave 63.9, 66.7, and 82.2% for paracetamol, salbutamol, and chlorpheniramine, respectively. Removal efficiency of 42.5–81.2% and 8.9–65.5% ranges of PAHs were obtained for CBV and COA, respectively. The alternative adsorption treatment techniques are detailed in the chapter.

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Section: Adsorption Of Pah and Phacs From Industrial Wastewatersupporting

confidence: 86%

Adsorption Technique an Alternative Treatment for Polycyclic Aromatic Hydrocarbon (PAHs) and Pharmaceutical Active Compounds (PhACs)

Ogunlowo¹

2022

Wastewater Treatment

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“…Therefore, the contribution of 13.0 % in this measurement indicated that the Biomass-K particles may undergo atmospheric oxidation processes to some extent. A class of high-molecular-weight organic matter (HOM) characterized by distinct polycyclic aromatic hydrocarbons (PAHs), e.g., 152[C 12 H 8 ] + , 165[C 13 H 9 ] + , 178[C 14 H 10 ] + , and 189[C 15 H 9 ] + , was also detected (Zhang et al, 2022c), accounting for 5.5 % of the total particles. The prominent nitrate (46[NO 2 ] − and 62[NO 3 ] − ) signals in negative spectra indicated the mix of HOM particles with secondary inorganic aerosol species (Fig.…”

Section: Mixing State Of Aerosol Particlesmentioning

confidence: 99%

Mixing state and effective density of aerosol particles during the Beijing 2022 Olympic Winter Games

Du,

Sun,

Liu

et al. 2023

Atmos. Chem. Phys.

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Abstract. Mixing state and density are two key parameters of aerosol particles affecting their impacts on radiative forcing and human health. Here a single-particle aerosol mass spectrometer in tandem with a differential mobility analyzer and an aerodynamic aerosol classifier was deployed during the Beijing 2022 Olympic Winter Games (OWG) to investigate the impacts of emission controls on particle mixing state and density. Our results show the dominance of carbonaceous particles comprising mainly total elemental carbon (Total-EC, 13.4 %), total organic carbon (Total-OC, 10.5 %) and Total-ECOC (47.1 %). Particularly, the particles containing organic carbon and sulfate were enhanced significantly during OWG, although those from primary emissions decreased. The composition of carbonaceous particles also changed significantly which was characterized by the decreases in EC mixed with nitrate and sulfate (EC-NS), EC mixed with potassium nitrate (KEC-N), and amine-containing particles and increase in ECOC mixed with nitrate and sulfate (ECOC-NS). This result indicates that emission controls during OWG reduced the mixing of EC with inorganic aerosol species and amines yet increased the mixing of EC with organic aerosol. The average effective density (ρeff) of aerosol particles (150–300 nm) was 1.15 g cm−3 during the non-Olympic Winter Games (nOWG), with higher values during OWG (1.26 g cm−3) due to the increase in secondary particle contribution. In addition, the ρeff of most particles increased with the increases in pollution levels and relative humidity, yet they varied differently for different types of particles, highlighting the impacts of aging and formation processes on the changes of particle density and mixing state.

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“…found that levoglucosan can degrade rapidly due to atmospheric oxidation.Therefore, the contribution of 13.0 % in this measurement indicated that the Biomass-K particles may undergo atmospheric oxidation processes to some extent. A class of high-molecular-weight organic matter (HOM) characterized by distinct polycyclic aromatic hydrocarbons (PAHs) e.g., 152[C 12 H 8 ] + , 165[C 13 H 9 ] + , 178[C 14 H 10 ] + , and 189[C 15 H 9 ] + was also detected(Zhang et al, 2022c), accounting for 5.5 % of the total particles. The prominent nitrate (46[NO 2 ] − and 62[NO 3 ] − ) signals in…”

mentioning

confidence: 99%

Mixing state and effective density of aerosol particles during the Beijing 2022 Olympic Winter Games

Sun

Liu

et al. 2023

Preprint

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Abstract. Mixing state and density are two key parameters of aerosol particles affecting their impacts on radiative forcing and human health. Here a single particle aerosol mass spectrometer in tandem with a differential mobility analyzer and an aerodynamic aerosol classifier was deployed during the Beijing 2022 Olympic Winter Games (OWG) to investigate the impacts of emission controls on particle mixing state and density. Nearly 760,000 particles were detected, which were classified into seven major classes. Our results showed the dominance of carbonaceous particles comprising mainly Total-EC (13.4 %), Total-OC (10.5 %) and Total-ECOC (47.1 %). Particularly, the particles containing organic carbon and sulfate were enhanced significantly during OWG although those from primary emissions decreased. The composition of carbonaceous particles also changed significantly which was characterized by the decreases in EC-NS, KEC-N, and amine-containing particles, and increase in ECOC-NS. This result indicates that emission controls during OWG reduced the mixing of elemental carbon (EC) with inorganic aerosol species and amines, yet increased the mixing of EC with organic aerosol. The average effective density (ρeff) of aerosol particles (150–300 nm) was 1.20 g cm−3 with higher values during OWG (1.26 g cm−3) due to the increase in secondary particle contribution. The two types of fresh particles, i.e., Total-EC and high molecular weight organic matter presented the lowest ρeff (0.97 g cm−3 and 0.87 g cm−3, respectively). In addition, the ρeff of most particles increased as the increases in pollution levels and relative humidity, yet varied differently for different types of particles, highlighting the impacts of aging and formation processes on the changes of particle density and mixing state.

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Detection of polycyclic aromatic hydrocarbons using a high performance-single particle aerosol mass spectrometer

Cited by 11 publications

References 63 publications

Adsorption Technique an Alternative Treatment for Polycyclic Aromatic Hydrocarbon (PAHs) and Pharmaceutical Active Compounds (PhACs)

Adsorption Technique an Alternative Treatment for Polycyclic Aromatic Hydrocarbon (PAHs) and Pharmaceutical Active Compounds (PhACs)

Mixing state and effective density of aerosol particles during the Beijing 2022 Olympic Winter Games

Mixing state and effective density of aerosol particles during the Beijing 2022 Olympic Winter Games

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