metabolic formation of epoxides derived from polycyclic aromatic hydrocarbons
Accumulation of polychlorinated biphenyls and polycyclic aromatic hydrocarbons in the snowpack of minnesota and lake superior
... Accumulation of Polychlorinated Biphenyls and Polycyclic Aromatic Hydrocarbons in the Snowpack of Minnesota and Lake Superior Thomas P Franz† and Steven J Eisenreich* Department of Environmental ... 1992 ranged from 0.8 to 14 ng/L (Table 2) The coefficient of variation (RSD) amongst several sets of replicate cores averaged 41 ± 22% With the exception of Σ-PCB concentrations of ~10 ng/L in ... and ~870 kg accumulated in the snowcover of the basin The concentration of chemicals in runoff during snowmelt is influenced by the rate of thaw, runoff/terrestrial interactions, and additional
Ngày tải lên: 18/10/2022, 16:06
particle-scale characterization and mass transfer of polycyclic aromatic hydrocarbons from contaminated soil to organic sorbent
... .ccecccscsssscssesscccescscvscsssessssseccsseacssessvessesecscssuscucesssasssvsssessessssesessvnsaesaeausecsaeacsanavsceavacusacensataes 124 ix Trang 11Comparison: of total polycyclic aromatic hydrocarbons (PAH)-concentrations of various sieve and density fractions of soil from an unplanted and a planted phytoremediation ... of the distance from the exterior surface Shown are average values for shots equidistant from the exterior surface of the particle, calculated from three profiles measured across the center of ... characterization of coke plant soil for the assessment of polycyclic aromatic hydrocarbons availability and the feasibility of phytoremediation’, describes particle-scale characterization of contaminated
Ngày tải lên: 13/11/2014, 15:58
Effect of Surfactant on Degradation of Polycyclic Aromatic Hydrocarbons (pahs) in Thermophilic Anaerobic Co-Digestion of Sludge from Kim-Ngưu River and Organic Waste
... evolution of polycyclic aromatic hydrocarbons (PAHs) in sludge from between PAHs and heavy metals, Chemosphere 64 (2006) 535-541 Matsuyama, A Charef, Distribution of 16 EPA-priority polycyclic aromatic ... Trang 136 Effect of Surfactant on Degradation of Polycyclic Aromatic Hydrocarbons (pahs) in Thermophilic Anaerobic Co-Digestion of Sludge from Kim-Ngưu River and Organic Waste ... Journal of Natural Sciences and Technology, Vol 30, No 1 (2014) 36-4236 Effect of Surfactant on Degradation of Polycyclic Aromatic Hydrocarbons (pahs) in Thermophilic Anaerobic Co-Digestion of Sludge
Ngày tải lên: 19/02/2017, 18:54
Determination of polycyclic aromatic hydrocarbons in barbecued pork using quechers extraction and gas chromatography – mass spectrometry
... the levels of polycyclic aromatic hydrocarbon (PAHs) in different suites of fish Food and Chemical Toxicology, (58), 86–94 Manda P et al., (2012) Evaluation of polycyclic aromatic hydrocarbons ... Toxicology, 47(4), 819–826 Luzardo O P et al.,( 2013) Influence of the method of production of eggs on the daily intake of polycyclic aromatic hydrocarbons and organochlorine contaminants: An independent ... concentration from 10 to 100ppb and coefficients of determination r2 > 0.99 In addition, the limit of detection for PAHs concentrations (0.3-0.8ppb) allowed the quantification of the small level of PAHs
Ngày tải lên: 14/01/2020, 17:37
Optimization of ultrasonic extraction for determination of 16 polycyclic aromatic hydrocarbons in air particle
... Trang 1OPTIMIZATION OF ULTRASONIC EXTRACTION FOR DETERMINATION OF 16 POLYCYCLIC AROMATIC HYDROCARBONS IN AIR PARTICLE Hanh Thi Duong1, *, Ha Thu Trinh2, ... publication: 6 April 2018 Abstract The aim of this study is to develop a quick ultrasonic extraction procedure for determination of 16 typical polycyclic aromatic hydrocarbons (PAHs) in air particles ... for determination of PAHs in air particle Keywords: air particle, GCMS, PAH, extraction, analytical method Classification numbers: 3.2 1 INTRODUCTION Polycyclic aromatic hydrocarbons (PAHs)
Ngày tải lên: 03/03/2020, 21:05
Optimized method for determination of 16 FDA polycyclic aromatic hydrocarbons (PAHs) in mainstream cigarette smoke by gas chromatography–mass spectrometry
... determination of 16 polycyclic aro-matic hydrocarbons (PAHs) from the FDA list of 93 harmful or potentially harmful constituents of mainstream cigarette smoke (MCS) Target analytes were extracted from ... comprising of vapour phase and particulate phase (total particulate matter, TPM) [1] MCS contains over 6500 compounds [2], more than 100 of which are established toxicants [3] Polycyclic aromatic hydrocarbons ... of the FDA HPHC list (GC–MS, GC–MS/MS and GC–HRMS) To our knowl-edge, this is the first study of measurement of all FDA specified PAHs in MCS for which the majority of data exceed the limit of
Ngày tải lên: 29/05/2020, 12:54
Characteristics of polycyclic aromatic hydrocarbons and unregulated emissions of biodiesel blends fueled on diesel generator
... (2011), "Gas–particle concentrations of atmospheric polycyclic aromatic hydrocarbons at an urban and a residential site in Osaka, Japan: Effect of the formation of atmospherically stable layer on ... (1995), "Toxicological profile for polycyclic aromatic hydrocarbons", U.S Department of Health and Human Services, USA [17] Barbara J., Finlayson P., James N (2000), "Chemistry of the Upper and Lower ... (2010), "Gas–particle partitioning and seasonal variation of polycyclic aromatic hydrocarbons in the atmosphere of Zonguldak, Turkey", Science of The Total Environment, 408, 5550-5558 [16] Agency
Ngày tải lên: 23/01/2021, 10:35
Capabilities of pure culture of bacteria in the biodegradation of polycyclic aromatic hydrocarbons and total petroleum hydrocarbons in oilfield wastewater
... Capabilities of Pure Culture of Bacteria in the Biodegradation of Polycyclic Aromatic Hydrocarbons and Total Petroleum Hydrocarbons in Oilfield Wastewater O Aleruchi* and O Obire Department of Microbiology, ... Px Ss Cc Duration of incubation (Days) Fig.3 GC profile showing the polycyclic aromatic hydrocarbon (PAH) on Day 1 Fig.4 GC profile showing the biodegradation of polycyclic aromatic hydrocarbon ... therefore investigated the capabilities of pure cultures of bacteria in the biodegradation of polycyclic aromatic hydrocarbons (PAHs) and total petroleum hydrocarbons (TPHs) in oilfield wastewater
Ngày tải lên: 28/06/2021, 09:36
DẦU MỠ ĐỘNG VẬT VÀ THỰC VẬT - XÁC ĐỊNH CÁC HYDROCACBON THƠM ĐA VÒNGAnimal and vegetable fats and oils - Determination of polycyclic aromatic hydrocarbons
... ĐỊNH CÁC HYDROCACBON THƠM ĐA VÒNG Animal and vegetable fats and oils - Determination of polycyclic aromatic hydrocarbons Lời nói đầu TCVN 9531:2012 hồn toàn tương đương với ISO 15753:2006 Sửa ... ĐỊNH CÁC HYDROCACBON THƠM ĐA VÒNG Animal and vegetable fats and oils - Determination of polycyclic aromatic hydrocarbons Phạm vi áp dụng Tiêu chuẩn quy định hai phương pháp xác định 15 hydrocacbon ... định nghĩa Trong tiêu chuẩn áp dụng thuật ngữ định nghĩa sau: 3.1 Hydrocacbon thơm đa vòng (polycyclic aromatic hydrocarbon) (PAH) Hợp chất có chứa hai nhiều hai vịng hydrocacbon thơm ngưng tụ
Ngày tải lên: 18/04/2022, 10:39
A Study Of The Formation Of Cyclic Allenes From 23-Dibromocycloa
... 1University of the Pacific Scholarly Commons University of the Pacific Theses and 1967 A Study Of The Formation Of Cyclic Allenes From 2,3-Dibromocycloalkenes Michael John Millam University of the ... https://scholarlycommons.pacific.edu/uop_etds Part of the Chemistry Commons Trang 2Reproduced with permission of the copyright owner Further reproduction prohibited without permission.Trang 3Reproduced with permission of the copyright ... permission.Trang 9Reproduced with permission of the copyright owner Further reproduction prohibited without permission.Trang 11Reproduced with permission of the copyright owner Further reproduction
Ngày tải lên: 25/10/2022, 02:43
Determination of kinetic bioconcentration in mussels after short term exposure to polycyclic aromatic hydrocarbons
... jsimal@uvigo.es (J Simal-Gándara). Abstract The kinetic bioconcentration of N-heterocyclic aromatic hydrocarbons and polycyclic aromatic hydrocarbons in mussels (Mytilus galloprovincialis) after short ... Decay of both PAHs concentrations in water after 24 h of waterborne exposure to mussels at levels of 10 and 100μg/L follows a first order kinetic with half-lives of 4–5 h, with residual levels of ... are well studied, there is a lack of information of what happens under non-steady-state conditions, the main purpose of our paper A synergistic bioconcentration of the mixture was found (around
Ngày tải lên: 24/11/2022, 17:49
Effect of aluminum treatment on proteomes of radicles of seeds derived from al treated tomato plants
... 2014, 179 external signal from a receptor on the surface of the cell to the DNA in the nucleus of the cell [45] Earlier studies using cell suspension cultures of coffee (Coffea arabica) found that ... peptides of the same protein) are much greater which is understandable as the proteome is comprised of proteins of different abundance (high versus low content levels) Data of log2 fold change of proteins ... intensity of reporter ions of peptides from mass spectrometry analysis was log-transformed (base, 2) Protein samples were clustered based on the distribution of log2 fold change values of all peptides
Ngày tải lên: 24/11/2022, 17:50
Effect of biochar derived from faecal matter on yield and nutrient content of lettuce (lactuca sativa) in two contrasting soils
... The EC of the biochar was determined after an hour equilibration of 1 g of biochar with 20 ml of distilled water The EC of the soil samples were determined after 2 h equilibration of 1 g of soil ... content of lettuce plants Responses of let-tuce to concurrent use of biochar with less N were ben-eficial in terms of fresh yield in this soil The correlation results suggested that addition of extra ... Singh and Agrawal 2007; Jamali et al 2009) To address the possible stigma of fertilizer derived from human excreta, biochar offers an interesting value proposition where the pyrolysis process guaranties
Ngày tải lên: 24/11/2022, 17:52
A fast and selective method for the determination of 8 carcinogenic polycyclic aromatic hydrocarbons in rubber and plastic materials
... loadedontothecartridgeswere18ngofbenzo[a]anthracene(BaA), 90ngofchrysene(Chr),40ngofbenzo[b]fluoranthene(BbF),6ng ofbenzo[k]fluoranthen(BkF),8ngofbenzo[j]fluoranthene(BjF), 100ngofbenzo[e]pyrene(BeP),25ngofbenzo[a]pyrene(BaP)and ... criteria of Polycyclic Aromatic Hydrocarbons in rubber and plastic components of articles placed on the market for supply to the general public in support of Regulation (EC) No 1907/2006 of the ... in, Official Journal of the European Union L396, 2006. Trang 10[9] BAuA, GS-Spezifikation AfPS GS 2014:01 PAK Testing and validation ofPolycyclic Aromatic Hydrocarbons (PAH) in the course of GS-Mark
Ngày tải lên: 31/12/2022, 09:50
Wastewater treatment occurrence and fate of polycyclic aromatic hydrocarbons (pahs) (advances in water and wastewater transport and treatment)
... Occurrence and Fate of Polycyclic Aromatic Hydrocarbons (PAHs) Wastewater Treatment Tai Lieu Chat Luong Trang 3Wastewater TreatmentOccurrence and Fate of Polycyclic Aromatic Hydrocarbons (PAHs) ... (2008, January) Polycyclic aromatic hydrocarbons EPA Fact Sheet U.S Environmental Protection Agency, Office of Solid Waste, Washington, DC JRC-IRMM (2010) Polycyclic aromatic hydrocarbons (PAHs) ... PAHs? Polycyclic aromatic hydrocarbons (PAHs) are a class of organic compounds that are made up of two or more fused aromatic rings PAHs are created primarily by incomplete combustion of organic
Ngày tải lên: 04/10/2023, 15:49
ĐẶC ĐIỂM HÓA LÝ CỦA THAN SINH HỌC ĐIỀU CHẾ TỪ VỎ TRẤ U- PHYSICAL AND CHEMICAL CHARACTERIZATION OF BIOCHAR DERIVED FROM RICE HUSK
... TRẤU- PHYSICAL AND CHEMICAL CHARACTERIZATION OF BIOCHAR DERIVED FROM RICE HUSK Article · January 2016 CITATIONS 0 READS 6,464 1 author: Some of the authors of this publication are also working on ... Thiên Huế" "Research on the efficiency of rice husk biochar on the growth of vegetables on loamy sand in Thua Thien Hue province" Project of Hue University (2014- 2016), Code: DHH2014-09-10 ... publication are also working on these related projects: "Research on the efficiency of rice husk biochar on the growth of vegetables on loamy sand in Thua Thien Hue province" Code: DHH2014-09-10
Ngày tải lên: 09/03/2024, 08:22
Studying the short term impacts of biochars derived from agricultural by products to improve degraded gray soil (haplic acrisols) quality in thai nguyen
... 0.02 kg of TSH01 from rice husks with 2 kg of Haplic Acrisols + Pot 3: 0.1 kg of TSH01 from rice husks with 2 kg of Haplic Acrisols + Pot 4: 0.2 kg of TSH01 from rice husks with 2 kg of Haplic ... 0.02 kg of TSH02 from wood chips and sawdust with 2 kg of Haplic Acrisols + Pot 6: 0.1 kg of TSH02 from wood chips and sawdust with 2 kg of Haplic Acrisols + Pot 7: 0.2 kg of TSH02 from wood ... presence of substituted aromatic rings, highlighting the diverse functionalization resulting from activation.Evaluation of the Impact of Biochar on the Properties of Haplic Acrisols4.3.1 Assessment of
Ngày tải lên: 19/08/2025, 10:09
Đánh giá rủi ro sức khỏe do phơi nhiễm polycyclic aromatic hydrocarbons (pahs) trong không khí giao thông trên địa bàn thành phố hồ chí minh
... NHIỄM POLYCYCLIC AROMATIC HYDROCARBONS (PAHs) TRONG KHÔNG KHÍ GIAO THÔNG TRÊN ĐỊA BÀN THÀNH Trang 2 - QUÁCH THỊ THANH MAI ĐÁNH GIÁ RỦI RO SỨC KHỎE DO PHƠI NHIỄM POLYCYCLIC AROMATIC HYDROCARBONS ... concentrations of PAHs in the form of dust collected by individual pumps of 2 liters per minute aren’t detected, whereas PAHs form gases are very high from 1997 to 6769 ng/m3 in rainy season and from 1693 ... ký lỏng hiệu nâng cao OEHHA : The Office of Environmental Health Hazard Assessment (Văn phòng đánh giá rủi ro về sức khỏe môi trường) PAHs : Polycyclic Aromatic Hydrocarbons QFF : Giấy lọc sợi
Ngày tải lên: 31/12/2018, 16:01
Supercritical fluid chromatography as a rapid single-step method for the determination of mineral oil saturated and aromatic hydrocarbons in purified mineral oils for food and
... determination of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH) in purified mineral oil samples The method requires no sample preparation apart from dilution ... MOSH/MOAH deconvolution a b s t r a c t Mineral oil hydrocarbons are used in the consumer goods sector for the elaboration of a wide range of foods and cosmetics Traditional methods for determining ... Supercritical fluid chromatography as a rapid single-step method for the determination of mineral oil saturated and aromatic hydrocarbons in purified mineral oils for food and cosmetics applications Alan
Ngày tải lên: 25/12/2022, 00:48
How Do Earnings Change When Reservists Are Activated - A Reconciliation of Estimates Derived from Survey and Administrative Data docx
... results of a set of analyses designed to quantify the relative importance of these and other reasons why estimates of earnings changes derived from SOFS-R and administrative data differ Matched SOFS-R ... estimates of how the earnings of reservists change when they are activated as derived from SOFS-R data with analogous estimates derived from administrative data.3 To so, we match survey responses from ... omission of the tax advantage and misreporting of military earnings in the 2004 SOFS-R can explain as much as 70 percent of the difference in baseline estimates of earnings changes derived from SOFS-R...
Ngày tải lên: 23/03/2014, 02:20