Oyster shell reduces PAHs and particulate matter from incense burning

Yang, Chi; Ko, Tzu-Hsing; Lin, Yen‐Chung; Lee, Suen Zone; Chang, Yin-Fan; Hsueh, Hsin Ta

doi:10.1007/s10311-012-0374-2

Cited by 6 publications

(2 citation statements)

References 24 publications

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“…From the far East to the West, incenses are commonly used in temples, churches, and in devotees' residence (See et al 2007;Yang et al 2013). In the Arabian Peninsula, they are also used for improving scents or removing odors in homes (Cohen et al 2013).…”

Section: Incense Burningmentioning

confidence: 99%

Role of indoor aerosols for COVID-19 viral transmission: a review

2021

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The relationship between outdoor atmospheric pollution by particulate matter and the morbidity and mortality of coronavirus disease 2019 (COVID-19) infections was recently disclosed, yet the role of indoor aerosols is poorly known. Since people spend most of their time indoor, indoor aerosols are closer to human occupants than outdoors, thus favoring airborne transmission of COVID-19. Therefore, here we review the characteristics of aerosol particles emitted from indoor sources, and how exposure to particles affects human respiratory infections and transport of airborne pathogens. We found that tobacco smoking, cooking, vacuum cleaning, laser printing, burning candles, mosquito coils and incenses generate large quantities of particles, mostly in the ultrafine range below 100 nm. These tiny particles stay airborne, are deposited in the deeper regions of human airways and are difficult to be removed by the respiratory system. As a consequence, adverse effects can be induced by inhaled aerosol particles via oxidative stress and inflammation. Early epidemiological evidence and animal studies have revealed the adverse effects of particle exposure in respiratory infections. In particular, inhaled particles can impair human respiratory systems and immune functions, and induce the upregulation of angiotensin-converting enzyme 2, thus inducing higher vulnerability to COVID-19 infection. Moreover, co-production of inflammation mediators by COVID-19 infection and particle exposure magnifies the cytokine storm and aggravates symptoms in patients. We also discuss the role of indoor aerosol particles as virus carriers. Although many hypotheses were proposed, there is still few knowledge on interactions between aerosol articles and virus-laden droplets or droplet nuclei.

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Section: Incense Burningmentioning

confidence: 99%

Role of indoor aerosols for COVID-19 viral transmission: a review

2021

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“…In recent years, ground OSPs have been successfully reused as various construction materials and as promising adsorbents of metal ions in sewage and so on. − …”

Section: Introductionmentioning

confidence: 99%

Eco-Efficient, Green, and Scalable Synthesis of 1,2,3-Triazoles Catalyzed by Cu(I) Catalyst on Waste Oyster Shell Powders

Xiong

Cai

Jiang

et al. 2014

ACS Sustainable Chem. Eng.

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An efficient and recyclable waste oyster shell powders (OSPs)-supported CuBr catalyst (OSPs–CuBr) has been successfully prepared and well characterized by Fourier transform infrared (FTIR) spectroscopy, thermal gravimetric analysis (TGA), atomic absorption spectroscopy (AAS), and powder X-ray diffraction (XRD). Then, OSPs–CuBr was used as a heterogeneous catalyst for the one-pot multicomponent synthesis of 1,4-disubstituted 1,2,3-triazole derivatives via a Cu(I)-catalyzed azide–alkyne 1,3-dipolar cycloaddition (CuAAC) reaction. Compared with a CaCO3–CuBr catalyst, the OSPs–CuBr catalyst showed higher catalytic activity and stability characteristics. The chitin and protein molecules on the OSP particles surfaces play an important role in the chelation of the CuBr species, which leads to the better chemical stability of OSPs–CuBr. The 1,2,3-triazoles are readily obtained in good to excellent yields and on a multigram scale by the reaction of aryl/alkyl halides, alkynes, and NaN3 under microwave irradiation conditions. It also showed good reusability, could be easily recovered through filtration and washing, and was reused at least eight times with virtually no evident loss of catalytic performance.

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