scholarly journals Evaluation of impact of shale gas operations in the Barnett Shale region on volatile organic compounds in air and potential human health risks

2014 ◽  
Vol 468-469 ◽  
pp. 832-842 ◽  
Author(s):  
A.G. Bunch ◽  
C.S. Perry ◽  
L. Abraham ◽  
D.S. Wikoff ◽  
J.A. Tachovsky ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Human Health ◽  
Organic Compounds ◽  
Health Risks ◽  
Shale Gas ◽  
Barnett Shale ◽  
Human Health Risks ◽  
Volatile Organic ◽  
Potential Human Health

scholarly journals Groundwater Quality and Potential Human Health Risk Assessment for Drinking and Irrigation Purposes: A Case Study in the Semiarid Region of North China

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 783
Author(s):  
Feifei Chen ◽  
Leihua Yao ◽  
Gang Mei ◽  
Yinsheng Shang ◽  
Fansheng Xiong ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Human Health ◽  
Health Risks ◽  
North China ◽  
Shanxi Province ◽  
Hydrochemical Characteristics ◽  
Human Health Risks ◽  
Drinking And Irrigation ◽  
Hydrochemical Types ◽  
Potential Human Health

Groundwater is a valuable water source for drinking and irrigation purposes in semiarid regions. Groundwater pollution may affect human health if it is not pretreated and provided for human use. This study investigated the hydrochemical characteristics driving groundwater quality for drinking and irrigation purposes and potential human health risks in the Xinzhou Basin, Shanxi Province, North China. More specifically, we first investigated hydrochemical characteristics using a descriptive statistical analysis method. We then classified the hydrochemical types and analyzed the evolution mechanisms of groundwater using Piper and Gibbs diagrams. Finally, we appraised the groundwater quality for drinking and irrigation purposes using the entropy water quality index (EWQI). We assessed the associated human health risks for different age and sex groups through drinking intake and dermal contact pathways. Overall, we found that (1) Ca-HCO3 and Ca·Mg-HCO3 were the dominant hydrochemical types and were mainly governed by rock weathering and water–rock interactions. (2) Based on the EWQI classifications, 67.74% of the groundwater samples were classified as medium quality and acceptable for drinking purpose. According to the values of sodium adsorption ratio (SAR), residual sodium carbonate (RSC) and soluble sodium percentage (%Na), 90.32% of the samples were suitable for irrigation, while the remaining samples were unfit for irrigation because of the high salinity in the groundwater. (3) Some contaminants in the groundwater, such as NO3−, NO2− and F−, exceeded the standard limits and may cause potential risks to human health. Our work presented in this paper could establish reasonable management strategies for sustainable groundwater quality protection to protect public health.

scholarly journals Bioconservation of Historic Stone Buildings—An Updated Review

2021 ◽  
Vol 11 (12) ◽  
pp. 5695
Author(s):  
Benjamín Otto Ortega-Morales ◽  
Christine Claire Gaylarde
Keyword(s):  
Organic Compounds ◽  
Health Risks ◽  
Cell Walls ◽  
Poor Performance ◽  
Bacterial Cells ◽  
Original Condition ◽  
Human Health Risks ◽  
Volatile Organic ◽  
Heritage Buildings ◽  
Historic Stone

Cultural heritage buildings of stone construction require careful restorative actions to maintain them as close to the original condition as possible. This includes consolidation and cleaning of the structure. Traditional consolidants may have poor performance due to structural drawbacks such as low adhesion, poor penetration and flexibility. The requirement for organic consolidants to be dissolved in volatile organic compounds may pose environmental and human health risks. Traditional conservation treatments can be replaced by more environmentally acceptable, biologically-based, measures, including bioconsolidation using whole bacterial cells or cell biomolecules; the latter include plant or microbial biopolymers and bacterial cell walls. Biocleaning can employ microorganisms or their extracted enzymes to remove inorganic and organic surface deposits such as sulfate crusts, animal glues, biofilms and felt tip marker graffiti. This review seeks to provide updated information on the innovative bioconservation treatments that have been or are being developed.

Sign in / Sign up

Export Citation Format

Share Document