shellfish—analysis of potential adverse effects on human health

... manometer—One one-thousandth of a micron, or one billionth of a meter (e.g., 10-9) nasal congestion—Blockage of the nasal passages necrosis—Localized tissue death neutralism—A lack of interaction between ... airborne concentrations ranged from nondetectable to 16 ng/m3 The only confirmation of the latex allergens as being the cause of skin rashes and other allergic reactions was remediation that led ... referred to as “monoclonal." An example of a monoclonal test antigen is Fel d I Being related to and being the strongest (or most studied) allergenic component of a given species, the monoclonal antigens...

Ngày tải lên: 11/08/2014, 07:20

... ortho-xylene concentration up to 0.30 parts per billion in their blood The effect of xylene exposure on the general population at current levels of exposure is not known The health effects of xylenes ... nonsmokers and 0.66 ppb for smokers) The effect of benzene exposure on the general population at current levels of exposure is not known The health effects of benzene at the levels found among ... 90% of the participants did not have a detectable carbon tetrachloride concentration in their blood The effect of carbon tetrachloride exposure on the general population at current levels of exposure...

Ngày tải lên: 14/02/2014, 03:20

... fraction of ammonia (as NH4) in the non-propellant portion H = weight fraction of water in the non-propellant portion EL = weight fraction of exempt compounds in the non-propellant portion WP ... in the nonpropellant, non-aqueous portion – H = weight fraction of the non-propellant portion that does not contain water – LVP= weight fraction of the non-propellant, non-aqueous portion that ... sample for confirmation 3.5 Initial Determination of VOC Content The Executive Officer will determine the VOC content pursuant to sections 3.2 and 3.3 Only those components with concentrations equal...

Ngày tải lên: 14/03/2014, 20:20

... concentration of compound j measured in sample i, the concentration of compound j in the emission of source p, and the strength of source p on sample i (16, 19) In this section, wind direction ... element of D, represents the action of source p on pollution in the wind direction range of di For example, if source strongly affects the observed concentration at the wind direction of 80°, ... directional plot shows a broad contribution from that direction There are a number of peaks in the corresponding contribution plot, but none of these peaks were on the weekend In addition, the...

Ngày tải lên: 22/03/2014, 14:20

... eliminate the effects of dilution, the speciated data are normalized to carbon monoxide concentrations methyl ethyl ketone, ethanol, etc., which can lead to a continuous production of acetaldehyde ... specifically on the characterization of volatile organic compounds (VOCs) in the MCMA, both on the ground and aloft and on the emission, transport, and transformation of VOCs downwind of the metropolitan ... concentrations are normalized to carbon monoxide concentrations to eliminate the effects of dilution To test the model we also included the ratio of peroxyacetyl nitrate (PAN) to peroxypropionyl nitrate...

Ngày tải lên: 28/03/2014, 20:20

... migration of these gases to ensure the safety of both in-situ and ex-situ structures, and to ensure the safety and protection of personnel and local populations The migration of methane and carbon ... landfill conditions [7] 1.2 Assumptions and limitations of the landfill emissions model The model has the following assumptions and limitations: i the methane generation process is based on a first ... value of 1.7218 x 10-7 kg/year This probability distribution outcome provides information on the variability of the total annual mass emission rate of NMOC based on the variability of the concentration...

Ngày tải lên: 05/09/2013, 16:11

... catalytic oxidation, flame ionization, infrared absorption, and photoionization 6.2 The instrument shall be capable of measuring the leak definition concentration specified in the regulation 1155 6.3 ... Examples of published response factors for flame ionization and catalytic oxidation detectors are included in References 1-3 of Section 17.0 8.1.2 Calibration Precision The calibration precision test ... percentage of the average difference between the meter readings and the known concentration to the known concentration 3.3 Leak definition concentration means the local VOC concentration at the...

Ngày tải lên: 14/02/2014, 08:20

... identification of VOC concentrations that may be of potential human- health concern (hereafter referred to as concentrations of potential concern) The spatial distribution of VOC concentrations of potential ... estimates of benchmark concentrations of contaminants in water that may be of potential human- health concern HBSLs are based on health effects alone and have been calculated for unregulated contaminants ... Detections and concentrations of potential human- health concern Number of VOCs with concentrations greater than their MCL Frequency of concentrations greater than their MCL, in percent Number of...

Ngày tải lên: 14/03/2014, 19:20

... Statement of typical rates of consumption of chemicals, a description of the physical and chemical nature of wastes, and rates of waste production; concentrates, residues, etc.; Definition of the ... verification; and Report preparation and information transfer This verification testing program is being conducted by NSF with participation of manufacturers, under the sponsorship of the EPA Office of ... lines of communication shall be provided by the FTO in its application on behalf of the manufacturer 2.3 Verification Testing Site Name and Location This section discusses background information on...

Ngày tải lên: 14/03/2014, 19:20

... development of personal computer software, and presentation of workshops on control technology matters Thetechnical guidance projects, such as this one, focus on topics of national or regional interest ... installation of solvent recovery spray equipment cleaning systems and, for volume shops only, add -on control In order to estimate VOC emissions, VOC emission reductions, and costs of emission reductions, ... emissions from automobile refinishing operations This section presents the findings of this study including alternative VOC reduction techniques, potential VOC emission reductions, and costs of...

Ngày tải lên: 22/03/2014, 14:20

... Compounds" (TVOC) One of the reasons is that the interpretation of one single parameter is simpler and faster than the interpretation of the concentrations of several dozens of VOCs typically ... perception of odours Adverse health reactions include irritation of mucous membranes, mostly of the eyes, nose and throat, and longterm toxic reactions of various kinds (ECA-IAQ, 1991) As VOCs belong ... mixtures of VOCs with compositions and concentrations similar to those found in nonindustrial indoor environments In one series of experiments, humans were exposed to concentrations of a specific...

Ngày tải lên: 28/03/2014, 19:20

... variation of H2S concentration in air between the values of 0% and 2% This confirms the potential for this system to be applied not only for H2S detection, but also for measurements of H2S concentration ... represents the concentration of total VSCs An average concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these ... concentration of H2S gas, the interference signal showed a concentration-dependent wavelength shifting of the Fabry-Perot interference fringe spectrum, as a result of the adsorption of H2S molecules on...

Ngày tải lên: 18/06/2014, 22:20

... variation of H2S concentration in air between the values of 0% and 2% This confirms the potential for this system to be applied not only for H2S detection, but also for measurements of H2S concentration ... represents the concentration of total VSCs An average concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these ... concentration of H2S gas, the interference signal showed a concentration-dependent wavelength shifting of the Fabry-Perot interference fringe spectrum, as a result of the adsorption of H2S molecules on...

Ngày tải lên: 20/06/2014, 04:20

... variation of H2S concentration in air between the values of 0% and 2% This confirms the potential for this system to be applied not only for H2S detection, but also for measurements of H2S concentration ... represents the concentration of total VSCs An average concentration of total sulphur compounds in the malodour of healthy individuals is between 0.2 to 0.4 µg/L [24] Detection of VSCs within these ... shift of wavelength and the corresponding change of EOT signal are attributed to a change of the porous refractive index of nanoporous AAO layer as a result of the adsorption of H2S molecules on...

Ngày tải lên: 20/06/2014, 23:20

... characterisation of the effect of rehydration nutrients on the formation of volatile sulfur compounds was obtained by monitoring H2S production throughout fermentation Addition of rehydration nutrients ... volatile chemical composition (Figure 1) The concentration of the polyfunctional thiols 3MH and 3MHA increased with the addition of rehydration nutrient while the concentration of hydrogen sulfide was ... detailed profile of H2S formation in the early stage of a separate fermentation experiment H2S formation was measured using gas detection tubes D H2S formation and YAN consumption profile during...

Ngày tải lên: 20/06/2014, 23:20

... OA: collection of samples, revision of the draft critically for important intellectual content BB: substantial contribution to conception and design, collection of samples, revision of the draft ... intellectual content MR: substantial contribution to conception and design, collection of samples, revision of the draft critically for important intellectual content AM: substantial contribution to conception ... Authors' contributions DP: substantial contribution to conception and design, acquisition of data, analysis and interpretation of data, involved in drafting the articles PC: substantial contribution...

Ngày tải lên: 12/08/2014, 18:21

... CO2 H2O có khí thải tạo thành amin cacbonat phản ứng tiếp tục xảy theo sơ đồ hệ thống xử lí khí H2S amoni cacbonat Sơ đồ hệ thống xử lý H2S amoni cacbonat Trong : 1.tháp hấp thụ tháp oxi hóa thùng ... tưới Sơ đồ hệ thống xử lý H2S Na2CO3 Ngoài ra, người ta dùng amoni cacbonat kali cacbonat làm dung dịch hấp thụ khí H2S Với amin cacbonat, phản ứng xảy sau: (NH4)2CO3 + H2S = (NH4)2S +H2O + CO2 ... clorua bơm c Xử lý H2S amoniac : Dung dịch amoniac để khử H2S khí thải trình đơn giản áp dụng rộng rãi Trong tháp hấp thụ , H2S khí thải tiếp xúc với dung dịch amoniac chúng kết hợp với theo...

Ngày tải lên: 12/04/2015, 14:24

... area of the TSP Y-intercept of gas/particle partitioning relationship Constant parameter, 0.172 Pa·m Concentration of a chemical in colloidal phase (dissolved organic carbon) Concentration of a ... Equilibrium concentration in phase m Equilibrium concentration in phase n Concentration of a chemical in atmospheric particle Dissolved concentration in water at equilibrium Concentration of a chemical ... Molar mass of a compound Slope of gas/particle partitioning relationship Molecular weight of octanol Surface concentration of sorption sites on particles Vapor pressure Mean precipitation amount...

Ngày tải lên: 11/09/2015, 10:15

... activated carbon, molecules continue to accumulate on the surface until the rate of the forward reaction (adsorption) equals the rate of the reverse reaction (desorption) When this condition exists, ... the amount of adsorption on a unit mass of activated carbon was directly proportional to the initial concentration of that trace compound in an adsorption test if (1) the Freundlich exponents for ... impact on operation costs, and when visual observation is needed to monitor the condition of the GAC For many systems the decision between pressure or gravity contactors is made on the basis of cost...

Ngày tải lên: 14/02/2014, 03:20