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Stevenson E, Mortazavi R, Casuccio GS, Chow JC, Lednicky JA, Lee RJ, Levine A, Watson JG. Environmental sampling for disease surveillance: Recent advances and recommendations for best practice. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2023; 73:723-729. [PMID: 37729106 DOI: 10.1080/10962247.2023.2253709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Affiliation(s)
- Eric Stevenson
- Immediate Past Chair, A&WMA Critical Review Committee, Retired from Bay Area Air Quality Management District, San Francisco, CA, USA
| | | | | | - Judith C Chow
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
| | - John A Lednicky
- Department of Environmental and Global Health of the College of Public Health and Health Professions, University of Florida, Gainesville, FL, USA
| | | | | | - John G Watson
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
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In memoriam: Peter K. Mueller (1926-2023). JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2023; 73:333-334. [PMID: 37171912 DOI: 10.1080/10962247.2023.2202598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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Chow JC, Watson JG, Wang X, Abbasi B, Reed WR, Parks D. Review of Filters for Air Sampling and Chemical Analysis in Mining Workplaces. MINERALS (BASEL, SWITZERLAND) 2022; 12:10.3390/min12101314. [PMID: 37180428 PMCID: PMC10174218 DOI: 10.3390/min12101314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
This review considers the use of filters to sample air in mining workplace environments for dust concentration measurement and subsequent analysis of hazardous contaminants, especially respirable crystalline silica (RCS) on filters compatible with wearable personal dust monitors (PDM). The review summarizes filter vendors, sizes, costs, chemical and physical properties, and information available on filter modeling, laboratory testing, and field performance. Filter media testing and selection should consider the characteristics required for mass by gravimetry in addition to RCS quantification by Fourier-transform infrared (FTIR) or Raman spectroscopic analysis. For mass determination, the filters need to have high filtration efficiency (≥99% for the most penetrable particle sizes) and a reasonable pressure drop (up to 16.7 kPa) to accommodate high dust loading. Additional requirements include: negligible uptake of water vapor and gaseous volatile compounds; adequate particle adhesion as a function of particle loading; sufficient particle loading capacity to form a stable particle deposit layer during sampling in wet and dusty environments; mechanical strength to withstand vibrations and pressure drops across the filter; and appropriate filter mass compatible with the tapered element oscillating microbalance. FTIR and Raman measurements require filters to be free of spectral interference. Furthermore, because the irradiated area does not completely cover the sample deposit, particles should be uniformly deposited on the filter.
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Affiliation(s)
- Judith C. Chow
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89511, USA
- Correspondence:
| | - John G. Watson
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89511, USA
| | - Xiaoliang Wang
- Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89511, USA
| | - Behrooz Abbasi
- Department of Mining and Metallurgical Engineering, University of Nevada, Reno, NV 89557, USA
| | - Wm. Randolph Reed
- Office of the Director, National Institute for Occupational Safety and Health, Pittsburgh, PA 15236, USA
| | - David Parks
- Spokane Mining Research Division, National Institute for Occupational Safety and Health, Spokane, WA 99207, USA
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Vieceli T, Tejada S, Martinez-Reviejo R, Pumarola T, Schrenzel J, Waterer GW, Rello J. Impact of air pollution on respiratory microbiome: A narrative review. Intensive Crit Care Nurs 2022. [DOI: 10.1016/j.iccn.2022.103336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Salihi A, Al-Naqshabandi MA, Khudhur ZO, Housein Z, Hama HA, Abdullah RM, Hussen BM, Alkasalias T. Gasotransmitters in the tumor microenvironment: Impacts on cancer chemotherapy (Review). Mol Med Rep 2022; 26:233. [PMID: 35616143 PMCID: PMC9178674 DOI: 10.3892/mmr.2022.12749] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/07/2022] [Indexed: 11/23/2022] Open
Abstract
Nitric oxide, carbon monoxide and hydrogen sulfide are three endogenous gasotransmitters that serve a role in regulating normal and pathological cellular activities. They can stimulate or inhibit cancer cell proliferation and invasion, as well as interfere with cancer cell responses to drug treatments. Understanding the molecular pathways governing the interactions between these gases and the tumor microenvironment can be utilized for the identification of a novel technique to disrupt cancer cell interactions and may contribute to the conception of effective and safe cancer therapy strategies. The present review discusses the effects of these gases in modulating the action of chemotherapies, as well as prospective pharmacological and therapeutic interfering approaches. A deeper knowledge of the mechanisms that underpin the cellular and pharmacological effects, as well as interactions, of each of the three gases could pave the way for therapeutic treatments and translational research.
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Affiliation(s)
- Abbas Salihi
- Department of Biology, College of Science, Salahaddin University‑Erbil, Erbil, Kurdistan Region 44001, Iraq
| | - Mohammed A Al-Naqshabandi
- Department of Clinical Biochemistry, College of Health Sciences, Hawler Medical University, Erbil, Kurdistan Region 44001, Iraq
| | - Zhikal Omar Khudhur
- Department of Medical Analysis, Faculty of Applied Science, Tishk International University, Erbil, Kurdistan Region 44001, Iraq
| | - Zjwan Housein
- Department of Medical Laboratory Technology, Technical Health and Medical College, Erbil Polytechnique University, Erbil, Kurdistan Region 44002, Iraq
| | - Harmand A Hama
- Department of Biology, Faculty of Education, Tishk International University, Erbil, Kurdistan Region 44002, Iraq
| | - Ramyar M Abdullah
- College of Medicine, Hawler Medical University, Erbil, Kurdistan Region 44002, Iraq
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region 44002, Iraq
| | - Twana Alkasalias
- General Directorate of Scientific Research Center, Salahaddin University‑Erbil, Erbil, Kurdistan Region 44002, Iraq
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Altshuler SL, Ayala A, Collet S, Chow JC, Frey HC, Shaikh R, Stevenson ED, Walsh MP, Watson JG. Trends in on-road transportation, energy, and emissions. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2018; 68:1015-1024. [PMID: 30142033 DOI: 10.1080/10962247.2018.1512734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
| | - Alberto Ayala
- b Air Pollution Control Officer and Executive Director , Sacramento Metropolitan Air Quality Management District , Sacramento , CA , USA
| | - Susan Collet
- c Executive Engineer , Toyota Motor North America, Inc ., Ann Arbor , MI , USA
| | - Judith C Chow
- d Desert Research Institute , Reno , NV , USA
- e State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment , Chinese Academy of Sciences , Xi'an , People's Republic of China
| | - H Christopher Frey
- f Glenn E. Futrell Distinguished University Professor of Environmental Engineering, Department of Civil, Construction, and Environmental Engineering , North Carolina State University , Raleigh , NC , USA
| | - Rashid Shaikh
- g Director of Science , Health Effects Institute , Boston , MA , USA
| | - Eric D Stevenson
- h Meteorology and Measurements Division , Bay Area Air Quality Management District , San Francisco , CA , USA
| | | | - John G Watson
- d Desert Research Institute , Reno , NV , USA
- e State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment , Chinese Academy of Sciences , Xi'an , People's Republic of China
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Riggio GM, Chow JC, Cropper PM, Wang X, Yatavelli RLN, Yang X, Watson JG. Feasibility of coupling a thermal/optical carbon analyzer to a quadrupole mass spectrometer for enhanced PM 2.5 speciation. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2018; 68:463-476. [PMID: 29121482 DOI: 10.1080/10962247.2017.1394928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 06/07/2023]
Abstract
UNLABELLED A thermal/optical carbon analyzer (TOA), normally used for quantification of organic carbon (OC) and elemental carbon (EC) in PM2.5 (fine particulate matter) speciation networks, was adapted to direct thermally evolved gases to an electron impact quadrupole mass spectrometer (QMS), creating a TOA-QMS. This approach produces spectra similar to those obtained by the Aerodyne aerosol mass spectrometer (AMS), but the ratios of the mass to charge (m/z) signals differ and must be remeasured using laboratory-generated standards. Linear relationships are found between TOA-QMS signals and ammonium (NH4+), nitrate (NO3-), and sulfate (SO42-) standards. For ambient samples, however, positive deviations are found for SO42-, compensated by negative deviations for NO3-, at higher concentrations. This indicates the utility of mixed-compound standards for calibration or separate calibration curves for low and high ion concentrations. The sum of the QMS signals across all m/z after removal of the NH4+, NO3-, and SO42- signals was highly correlated with the carbon content of oxalic acid (C₂H₂O₄) standards. For ambient samples, the OC derived from the TOA-QMS method was the same as the OC derived from the standard IMPROVE_A TOA method. This method has the potential to reduce complexity and costs for speciation networks, especially for highly polluted urban areas such as those in Asia and Africa. IMPLICATIONS Ammonium, nitrate, and sulfate can be quantified by the same thermal evolution analysis applied to organic and elemental carbon. This holds the potential to replace multiple parallel filter samples and separate laboratory analyses with a single filter and a single analysis to account for a large portion of the PM2.5 mass concentration.
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Affiliation(s)
- Gustavo M Riggio
- a Division of Atmopsheric Sciences, Desert Research Institute , Reno , NV , USA
| | - Judith C Chow
- a Division of Atmopsheric Sciences, Desert Research Institute , Reno , NV , USA
- b State Key Laboratory of Loess and Quaternary Geology (SKLLQG) , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an , People's Republic of China
| | - Paul M Cropper
- a Division of Atmopsheric Sciences, Desert Research Institute , Reno , NV , USA
| | - Xiaoliang Wang
- a Division of Atmopsheric Sciences, Desert Research Institute , Reno , NV , USA
| | | | - Xufei Yang
- d Montana Tech of the University of Montana , Butte , MT , USA
| | - John G Watson
- a Division of Atmopsheric Sciences, Desert Research Institute , Reno , NV , USA
- b State Key Laboratory of Loess and Quaternary Geology (SKLLQG) , Institute of Earth Environment, Chinese Academy of Sciences , Xi'an , People's Republic of China
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