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https://www.readbyqxmd.com/read/29908500/new-approach-for-point-pollution-source-identification-in-rivers-based-on-the-backward-probability-method
#1
Jiabiao Wang, Jianshi Zhao, Xiaohui Lei, Hao Wang
Pollution risk from the discharge of industrial waste or accidental spills during transportation poses a considerable threat to the security of rivers. The ability to quickly identify the pollution source is extremely important to enable emergency disposal of pollutants. This study proposes a new approach for point source identification of sudden water pollution in rivers, which aims to determine where (source location), when (release time) and how much pollutant (released mass) was introduced into the river...
June 13, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29907281/a-lab-on-a-tip-approach-to-make-electroanalysis-user-friendly-and-de-centralized-detection-of-copper-ions-in-river-water
#2
Stefano Cinti, Vincenzo Mazzaracchio, Gökçe Öztürk, Danila Moscone, Fabiana Arduini
The development of portable and user-friendly sensing platforms is a hot topic in the field of analytical chemistry. Among others, electroanalytical approaches exhibit a high amenability for reaching this purpose, i.e. the commercial strips for diabetes care are an obvious success. However, providing fully-integrated and user-friendly methods is the leitmotiv. In this work we evaluate the use of a disposable pipette tip, opportunely configured, to realize the first example of lab-on-a-tip. The combination of a pipette tip, wire electrodes, and cotton wool filter, highlights the suitability of producing a novel one-shot electroanalytical platform that does not require expertise-required tasks...
October 31, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29906752/heavy-metal-pollution-and-spatial-distribution-in-surface-sediments-of-mustafakemalpa%C3%A5-a-stream-located-in-the-world-s-largest-borate-basin-turkey
#3
Philip Isaac Omwene, Mehmet Salim Öncel, Meltem Çelen, Mehmet Kobya
Mining activities in addition to the geology of Mustafakemalpaşa catchment have for long been linked to its deteriorating water and sediment quality. This study assessed contamination levels of heavy metals and other major elements (Pb, As, B, Cd, Zn, Cr, Mo, Co, Ni, Cu, and Ag) in surface sediments of the area, and identified possible pollution sources. Sediment quality indicators, such as contamination factor (CF), enrichment factor (EF), geo-accumulation index (Igeo ) and sediment quality guidelines were used, in addition to multivariate statistical technics; Pearson Correlation Matrix (PCM), Principal Component Analysis (PCA) and Hierarchical Cluster Analysis (HCA)...
June 7, 2018: Chemosphere
https://www.readbyqxmd.com/read/29906610/phylogeny-and-systematics-of-chiroxiphia-and-antilophia-manakins-aves-pipridae
#4
Sofia Marques Silva, Carlos Eduardo Agne, Alexandre Aleixo, Sandro L Bonatto
Chiroxiphia and Antilophia manakins are recognized as closely related genera. Nonetheless, Chiroxiphia has been recovered as paraphyletic in some studies with limited taxonomic coverage. This genus currently comprises five species, although this arrangement is still unsettled. Chiroxiphia pareola is the most widespread species, with four recognized subspecies, but their taxonomic status are also uncertain. Finally, the phylogenetic relationships amongst the majority of Chiroxiphia and Antilophia taxa are unknown...
June 12, 2018: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29905902/the-investigation-of-perfluoroalkyl-substances-in-seasonal-freeze-thaw-rivers-during-spring-flood-period-a-case-study-in-songhua-river-and-yalu-river-china
#5
Xun Zhang, Tingting Hu, Lu Yang, Zhiyong Guo
The occurrence of 15 perfluoroalkyl substances (PFASs) in water, sediments, and fish from Songhua River and Yalu River in Jilin Province, Northeast China, during their spring flood period were investigated for the first time. The short-chain perfluorobutanoic acid was the dominant PFAS in the water with the mean concentrations of 10 ng L-1 in Songhua River and 9.0 ng L-1 in Yalu River, and also dominant in sediments with the mean concentrations of 2.0 and 1.8 ng g-1 dry weight. Perfluorodecane sulfonate was the predominant compound in fish...
June 15, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29904816/water-quality-variation-during-a-strong-el-ni%C3%A3-o-event-in-2016-a-case-study-in-kampar-river-malaysia
#6
Casey Keat-Chuan Ng, Choo-Hou Goh, Jia-Chun Lin, Minn-Syenn Tan, Willie Bong, Chea-Soon Yong, Jun-Yao Chong, Peter Aun-Chuan Ooi, Wey-Lim Wong, Gideon Khoo
El Niño and Southern Oscillation (ENSO) is a natural forcing that affects global climate patterns, thereon influencing freshwater quality and security. In the advent of a strong El Niño warming event in 2016 which induced an extreme dry weather in Malaysia, water quality variation was investigated in Kampar River which supplies potable water to a population of 92,850. Sampling points were stratified into four ecohydrological units and 144 water samples were examined from October 2015 to March 2017. The Malaysian Water Quality Index (WQI) and some supplementary parameters were analysed in the context of reduced precipitation...
June 15, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29904813/the-distribution-and-partitioning-of-trace-metals-pb-cd-cu-and-zn-and-metalloid-as-in-the-beijiang-river
#7
Rui Li, Changyuan Tang, Yingjie Cao, Tao Jiang, Jianyao Chen
The concentrations of Cu, Zn, Pb, Cd, and As varied quite differently in the water, suspended particulate matter (SPM), and sediment along the middle reach of the Beijiang River in southern China. The total concentrations of trace metals and As in the water column were significantly affected by the concentration of SPM, while the metals and As in the sediment were mainly influenced by fine particle component, OM and Fe/Mn/Al. The partitioning coefficient of trace metals and As in the water column generally appeared in the following order: Pb > Cd > Cu > Zn > As...
June 14, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29904680/hydro-geometrical-data-analyses-of-river-atuwara-at-ado-odo-otta-ogun-state
#8
Adebanji S Ogbiye, Olumuyiwa O Onakunle, David O Omole
The dataset analyzed in this article contains spatial and temporal values of the hydro-geometric parameters of River Atuwara. The hydro-geometrical data analyses of various sampling point on River Atuwara was examined and their geometric properties were taken with the use of a paddled boat, depth meter and global positioning system (GPS). The co-ordinates, width, depth, slopes, area, velocity, flow were gotten in-situ while the area and wetted perimeter were computed ex-situ. The statistical relationships between separate variables were considered using scatter plots and regression line equations...
June 2018: Data in Brief
https://www.readbyqxmd.com/read/29903206/-monitoring-and-analysis-on-variation-of-quality-for-floodwater-in-wuhan-urban-areas-in-2016
#9
Junling Liu, Zhenyu He, Yao Wang, Yan Xiong, Jiansheng Liang
OBJECTIVE: To conduct a continuous monitoring of the physical, chemical microbial indicators and overall biological toxicity for water quality in waterlogged urban areas. METHODS: Monitoring sites were chosen in the waterlogging areas in the NanhuYayuan and Banqiao communities of Hongshan District, and the Xinhu village of Xinzhou District, Wuhan City. The South Lake, Yezhi Lake and Shahe River were selected as the corresponding surface water monitoring sites. Samples were collected in an extended period of time for the examination of physical, chemical microbial indicators and the determination of biological toxicity...
November 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29903199/-prevalence-of-hypertension-and-its-influencing-factors-in-rural-areas-along-the-yangtze-river-in-anhui-province-in-2014-2015
#10
Mingjun Hu, Mengmeng Zhou, Yuwei Yang, Ling Liang, Qi Zhong, Qirong Qin, Xiaodong Wang, Fen Huang
OBJECTIVE: To investigate the prevalence, awareness, treatment, control and related influence factors of hypertension among rural adult residents in areas along the Yangtze River in Anhui Province. METHODS: Totally 2873 rural adult residents in seven typical towns along the Yangtze River of Chizhou, Tongling and Ma'anshan Cities, Anhui Province were selected, with multistage-stratified random cluster sampling, to perform questionnaires and physical measurements from year 2014 to 2015...
November 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29903192/-current-situation-of-food-consumption-and-its-correlation-with-climate-among-rural-residents-in-china-2000-2012
#11
Lingru Cheng, Dingyuan Xie, Qiuhong Qian, Yijia He
OBJECTIVE: To study the differences in food consumption among rural residents in various regions of China, and to analyze the climatic factors that affect the food consumption of rural residents. METHODS: Based on the consumption data of 13 kinds of food of rural residents including wheat, rice, other grain, fresh vegetables, pork, beef and mutton, poultry, eggs and related products, milk and related products, aquatic products, edible oil, sugar and liquor collected from the China Statistical Yearbook and China's Economic and social data research platform during 2000 to 2012, cluster analysis was conducted to partition the dietary structure and compare the differences in food consumption in each geographical area...
November 2017: Wei Sheng Yan Jiu, Journal of Hygiene Research
https://www.readbyqxmd.com/read/29902747/elucidating-the-relationship-between-aerosol-concentration-and-summertime-boundary-layer-structure-in-central-china
#12
Lin Liu, Jianping Guo, Yucong Miao, Lin Liu, Jian Li, Dandan Chen, Jing He, Chunguang Cui
Wuhan, a megacity in central China, suffers from frequent aerosol pollution and is accompanied by meteorological factors at both synoptic and local scales. Partly due to the lack of appropriate observations of planetary boundary layer (PBL), the associations between synoptic conditions, PBL, and pollution there are not yet fully understood. Thus, systematic analyses were conducted using the fine-resolution soundings, surface meteorological measurements, and aerosol observations in Wuhan during summer for the period 2013-2016, in combination with T-mode principal component analysis and simulations of backward trajectory...
June 11, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29902621/pharmaceuticals-residues-in-selected-tropical-surface-water-bodies-from-selangor-malaysia-occurrence-and-potential-risk-assessments
#13
Sarva Mangala Praveena, Siti Norashikin Mohamad Shaifuddin, Syazwani Sukiman, Fauzan Adzima Mohd Nasir, Zanjabila Hanafi, Norizah Kamarudin, Tengku Hanidza Tengku Ismail, Ahmad Zaharin Aris
This study investigated the occurrence of nine pharmaceuticals (amoxicillin, caffeine, chloramphenicol, ciprofloxacin, dexamethasone, diclofenac, nitrofurazone, sulfamethoxazole, and triclosan) and to evaluate potential risks (human health and ecotoxicological) in Lui, Gombak and Selangor (Malaysia) rivers using commercial competitive Enzyme-Linked Immunosorbent Assay (ELISA) kit assays. Physicochemical properties of these rivers showed the surface samples belong to Class II of Malaysian National Water Quality Standards which requires conventional treatment before consumption...
June 11, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29902616/billings-reservoir-water-used-for-human-consumption-presents-microbiological-contaminants-and-induces-both-behavior-impairments-and-astrogliosis-in-zebrafish
#14
Ednilse Leme, Ericka P Silva, Paula S Rodrigues, Igor R Silva, Maria F M Martins, Eduardo F Bondan, Maria M Bernardi, Thiago B Kirsten
The Billings reservoir is the largest water-storage facility in the São Paulo Metropolitan Region, with only a small part of the reservoir used for water supply. Recently, the São Paulo Metropolitan Region has experienced the greatest water collapse ever recorded. Thus, the intensification of use of the Billings reservoir should be considered. The objective of this study was to evaluate the quality of the water from different areas of the Billings reservoir related to human consumption (water supply and fishing): Rio Pequeno, Rio Grande, and Bororé rivers...
June 11, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29902573/connecting-amazonian-cerrado-and-atlantic-forest-histories-paraphyly-old-divergences-and-modern-population-dynamics-in-tyrant-manakins-neopelma-tyranneutes-aves-pipridae
#15
João Marcos Guimarães Capurucho, Mary V Ashley, Camila C Ribas, John M Bates
Several biogeographic hypotheses have been proposed to explain connections between Amazonian and Atlantic forest biotas. These hypotheses are related to the timing of the connections and their geographic patterns. We performed a phylogeographic investigation of Tyrant-manakins (Aves: Pipridae, Neopelma/Tyranneutes) which include species inhabiting the Amazon and Atlantic forests, as well as gallery forests of the Cerrado. Using DNA sequence data, we determined phylogenetic relationships, temporal and geographic patterns of diversification, and recent intraspecific population genetic patterns, relative to the history of these biomes...
June 11, 2018: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29902118/polycyclic-aromatic-hydrocarbons-pahs-in-an-urban-river-at-mid-and-high-latitudes-a-case-study-in-siping-a-traditional-industrial-city-in-northeast-china
#16
Yidian Sun, Deming Dong, Liwen Zhang, Sinan He, Xiuyi Hua, Zhiyong Guo
The occurrence, spatial distribution, seasonal variation, sources, and ecological risks of polycyclic aromatic hydrocarbons (PAHs) in overlying water and surface sediments from Tiaozi River, which is an urban river running through the downtown of Siping City, a traditional industrial city of northeastern China, were investigated. The total PAH concentrations (ΣPAHs) in water varied from 473.5 to 2674.3 ng/L with a mean value of 1272.6 ng/L and ranged from 601.5 to 2906.3 ng/g with a mean value of 1534.4 ng/g in sediments...
June 14, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29901784/identification-and-characterization-of-terpene-synthase-genes-accounting-for-the-volatile-terpene-emissions-in-flowers-of-freesia-hybrida
#17
Fengzhan Gao, Baofeng Liu, Min Li, Xiaoyan Gao, Qiang Fang, Chang Liu, Hui Ding, Li Wang, Xiang Gao
The origin of flower scents is a crucial event in biological evolution, which provides olfactory signals to attract pollinators. In this study, bioinformatic, metabolomics, biochemical and molecular methodologies were integrated to investigate the candidate genes involved in the biosynthesis of volatile components (VOCs) in two cultivars of Freesia hybrida, Red River® and Ambiance, which released different categories of compounds. We found that terpene synthase (TPS) genes were the pivotal genes determining spatiotemporal release of the VOCs in both cultivars...
June 12, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29900361/links-between-data-on-chemical-and-biological-quality-parameters-in-wastewater-impacted-river-sediment-and-water-samples
#18
Miren Martínez-Santos, Anders Lanzén, Jessica Unda-Calvo, Iker Martín, Carlos Garbisu, Estilita Ruiz-Romera
In many urban catchments, the discharge of effluents from wastewater treatment plants (WWTPs), as well as untreated wastewaters (UWWs), presents a major challenge for the maintenance of river sediment and water quality. The discharge of these effluents cannot only increase the concentration of metals, nutrients and organic compounds in fluvial ecosystems, but also alter the abundance, structure and function of river bacterial communities. Here, we present data on chemical and biological quality parameters in wastewater-impacted and non-impacted river surface sediment and water samples...
August 2018: Data in Brief
https://www.readbyqxmd.com/read/29900358/phytoplankton-community-and-physical-chemical-data-measured-in-the-gulf-of-trieste-northern-adriatic-sea-over-the-period-march-2006-february-2007
#19
Tamara Cibic, Cinzia Comici, Claus Falconi, Daniela Fornasaro, Ana Karuza, Marina Lipizer
Biological, hydrological and chemical data were acquired at monthly intervals from March 2006 to February 2007, at the Long-Term Ecological Research site C1 in the Gulf of Trieste, in the northernmost part of the Adriatic Sea. The biological dataset comprises total chl a and phaeopigment concentrations, and the distinction of the total phytoplankton biomass into three photoautotrophic community fractions, i.e. cyanobacteria, nano- and microphytoplankton, collected at discrete depths. Hydrological data encompass the thermohaline properties of the water column (temperature and salinity profiles from CTD casts)...
August 2018: Data in Brief
https://www.readbyqxmd.com/read/29900166/presence-and-persistence-of-salmonella-in-water-the-impact-on-microbial-quality-of-water-and-food-safety
#20
REVIEW
Huanli Liu, Chris A Whitehouse, Baoguang Li
Salmonella ranks high among the pathogens causing foodborne disease outbreaks. According to the Centers for Disease Control and Prevention, Salmonella contributed to about 53.4% of all foodborne disease outbreaks from 2006 to 2017, and approximately 32.7% of these foodborne Salmonella outbreaks were associated with consumption of produce. Trace-back investigations have suggested that irrigation water may be a source of Salmonella contamination of produce and a vehicle for transmission. Presence and persistence of Salmonella have been reported in surface waters such as rivers, lakes, and ponds, while ground water in general offers better microbial quality for irrigation...
2018: Frontiers in Public Health
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