PG Articles
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Betula spp. pollen in the atmosphere of Novi Sad (2000–2002)
Pollen of Betula spp. is one of the main European aeroallergens. The aim of this study was to determine characteristics and occurrence of the Betula pollen in Novi Sad atmosphere, based on 3-year observations (2000–2002), and to compare pollen season start dates calculated by different methods. Pollen samples have been collected by Hirst volumetric method with a 7-day Burkard spore trap. Four ...
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PAHs, nitro‐PAHs, hopanes and steranes in lake trout from the Lake Michigan
This study examines concentrations and risks of polycyclic aromatic hydrocarbons (PAHs), nitro‐PAHs (NPAHs), steranes and hopanes in lake trout collected in Lake Michigan. A total of 74 fish were collected in two seasons at three offshore sites. Σ9PAH concentrations in whole fish ranged from 223 to 1,704 pg/g wet weight (ww), and PAH concentrations and profiles were similar across season, site ...
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Potable tank THM reduction - Case study
Topics: potable, THM reduction, TTHM, chlorine, stratification/water age Overview: This tank is a concrete cylindrical potable water storage tank that serves the area's distribution system. The tank is 130 ft. diameter x 22 ft. high, with a capacity of 2.0 million gallons (MG). The maximum inflow rate is 6.3 million gallons per day (MGD). The tank receives water from a reservoir, which is ...
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Southern New Jersey - Guaranteed benzene remediation in soil and groundwater - Case Study
Project Summary TRS Group, Inc. (TRS) under contract with URS Corporation ( URS) and Resource Environmental, LLC (RELLC) conducted an electrical resistance heating (ERH) remediation of benzene at a former gasoline service station located in southern New Jersey, The project scope of work was contracted as a Guaranteed Fixed Price Remediation (GFPR) that included no rebound of benzene in ...
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Indianapolis, Indiana - CVOC remediation adjacent to occupied building with sheet pile electrodes - Case Study
Standard Fixed Price Remediation of TCE and VC in soil and groundwater Project Summary TRS Group, Inc. (TRS) provided a Standard Fixed Price Remediation (SFPR) of trichioroethene (TCE) and vinyl chloride (VC) in soil and groundwater using Electrical Resistance Heating (ERH) for AECOM at a confidential site located in Indianapolis, Indiana, Unique aspects of this project included the ...
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Potable tank THM reduction - Case study
Overview: This tank is a concrete cylindrical potable water storage tank that serves the area's distribution system. The tank is 130 ft. diameter x 22 ft. high, with a capacity of 2.0 million gallons (MG). The maximum inflow rate is 6.3 million gallons per day (MGD). The tank receives water from a reservoir, which is treated at a water treatment plant. This plant is a direct filtration surface ...
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Polybrominated diphenyl ethers, dechlorane plus, and polychlorinated biphenyls in tree bark near the upper Yellow River, China
Willow tree bark samples from urban and rural sites in Inner Mongolia, Ningxia Province, and Gansu Province, in the Yellow River basin, were analyzed for polybrominated diphenyl ethers (PBDEs), dechlorane plus (DP), and dioxin‐like polychlorinated biphenyls (DL‐PCBs) to compare their relative levels in air in these areas (i.e., treating bark as a passive air sampler). No difference was found ...
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Cardiac toxicity by sublethal 2,3,7,8‐tetrachlorodibenzo‐p‐dioxin correlates with its anti‐proliferation effect upon cardiomyocytes in zebrafish embryos
The cardiac toxicity of zebrafish embryos in response to the lethal dose of 2,3,7,8‐tetrachlorodibenzo‐p‐dioxin (TCDD) has been well characterized. However dioxin contamination levels in nature are usually lower and sublethal TCDD toxicity is less investigated. We found that for the 72 hours post fertilization (hpf) zebrafish embryos, the non‐lethal doses of TCDD were 25 pg/ml and lower. 10 ...
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The Elbe flood in August 2002 - Occurence of polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/F) and dioxin-like PCB in suspended particulate matter (SPM), sediment and fish
Abstract As a result of extreme precipitation in August 2002 major flooding occurred in the catchment area of the rivers Elbe, Vltava (Moldau) and Mulde. Pollutants from industrial sites and from municipal sewage treatment works (STW) entered the Elbe and led to a serious pollution problem in the river. PCDD/F concentrations (in pg WHO-TEQ/g dw) in SPM ranged from 7-150, in sediments from 3-140; ...
By QuoData GmbH
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Beneficial Effects of Akkermansia muciniphila are not Associated with Major Changes in the Circulating Endocannabinoidome but Linked to Higher Mono-Palmitoyl-Glycerol Levels as New PPAR Agonists.
Abstract: Akkermansia muciniphila is considered as one of the next-generation beneficial bacteria in the context of obesity and associated metabolic disorders. Although a first proof-of-concept of its ben eficial effects has been established in the context of metabolic syndrome in humans, mechanisms are not yet fully understood. This study aimed at deciphering whether the bacterium exerts its ...
By A-Mansia
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Cyst Based Toxicity Tests. - VIII. Short-Chronic Toxicity Tests with the Freshwater Rotifer Brachionus calyciflorus
Abstract : The development and potential use of a 4-day static renewal test [4-day Life Table (LT) test] and a 3-day static test [3-day Population Growth (PG) test] with the freshwater rotifers Brachionus calyciflorus are described. For both bioassays, test animals are obtained by hatching cysts wich eliminates the need for the culturing and the maintenance of the organisms. The toxicity of ...
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Polychlorinated dibenzo
-p- dioxins and polychlorinated dibenzofuran concentrations in Xingyun Lake sediment close to the pulp mill region of Jiangchuan (China): a typical case studySediment cores from Xingyun Lake close to the pulp mill region of Jiangchuan (China), earlier found to be highly contaminated by pulping at least from the 1990s, were analyzed by HRGC/HRMS for the concentrations of 17 polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). Regarding the contribution of individual congeners, PCDD/F levels ranged from ND (non-detectable) to ...
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BP Petrojarl Foinhaven - produced water treatment
Client: BP/PGS Petrojarl Foinaven - UK CETCO were approached by BP/PGS regarding potential fluids handling problems on the Petrojarl Foinaven FPSO when bringing on two new wells during September 2001. CETCO mobilised a RFV 4000 DF Adsorption Skid containing CETCO’s patented CrudeSorb® media to treat the oily water phase of the well returns for discharge directly overboard. During a two week ...
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Things You Should Know about Your Reusable Water Bottle
Reusable water bottles are everywhere; on office desks, in gym bags, and in kids’ backpacks. And while it’s inexpensive, environmentally friendly, and incredibly convenient to stop by any tap or fountain for a quick refill, there are a few things to remember about these reusable bottles. Actually, there are a few things to remember about microorganisms: many of them love warmth, ...
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Characteristics, distribution and sources of polychlorinated biphenyls (PCBs) in coastal sediments from the heavily industrialized area of Asalouyeh, Iran
In this research, the levels of polychlorinated biphenyls (PCBs) were investigated in the marine sediments of Asaluyeh harbor, in the Persian Gulf. The samples were taken from industrial, semi-industrial and urban regions. The mean concentration levels of total (Σ) 18 detected PCBs were 514.32, 144.67 and 31.6 pg/g dw for the industrial, semi-industrial and urban sampling stations, ...
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Contamination of the alluvial plain, feeding-stuffs and foodstuffs with polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/Fs), dioxin-like polychlorinated biphenyls (DL-PCBs) and mercury from the River Elbe in the light of the flood
Abstract Meadow soils, feeding-stuffs and foodstuffs from the alluvial plain of the river Elbe were analyzed in respect of PCDD/Fs, DL-PCBs and mercury with a view to assessing the consequences of the extreme flood of August 2002. The PCDD/F concentrations in the soils range from 3 to 2100 ng WHO-TEQ/kg dm, and for the DL-PCBs the range was 0.32 to 28 ng WHO-TEQ/kg dm. On the basis of established ...
By QuoData GmbH
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Popular analysers are portable and rentable
The MCERTS approved HORIBA PG-250 has been one of the most popular instruments in Ashtead Technology’s fleet of rental equipment for a number of years. Jay Neermul, the company’s Environmental Product Manager says “This is because it is able to analyse CO, NO/NOx, SO2 and CO2 using standard reference methods in a portable instrument that can be easily and safely transported ...
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What gas can i use for ftir?
Fourier Transform Infrared (FTIR) - spectroscopy is used typically in testing laboratories for understanding materials and products. Fourier Transform Infrared (FTIR) - spectroscopy is used typically in testing laboratories for understanding materials and products, identifying chemical compounds in solids, liquids and gases, consumer products, paints, polymers, coatings, plastics ...
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Inter‐species rootstocks affect cadmium accumulation in post‐grafting generation plants of potential Cd‐hyperaccumulator Solanum photeinocarpum
Pot and field experiments were conducted to study the effects of inter‐species rootstocks on cadmium (Cd) accumulation characteristics of potential Cd‐hyperaccumulator Solanum photeinocarpum post‐grafting generation plants. Four treatments [ungrafted (UG) and S. photeinocarpum seedlings grafted on the rootstocks of eggplant (EG), potato (PG) and tomato (TG)] were utilized in present study. In ...
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Radiometric ratings for phosphogypsum in industrial areas in Romania
In order to assess the potential environmental risk of phosphogypsum and to establish a future and proper pollution management plan of gyp–stacks and waste dumps resulted due to the operation of former chemical plant, several types of measurements have been made. This paper presents the atmospheric radon concentrations measurements for phosphogypsum deposits in three areas of chemical industry. ...
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