Found 9764 publications. Showing page 199 of 391:
The effect of selected amines on the corrosion of carbon steel and copper was investigated in the laboratory and in the field. The steel and copper samples were exposed to loads of the amines in the laboratory, representing possible 10 years maximum real exposure due to emission from a CO2 capturing plant, and to higher doses in the laboratory and in the field. No effect on the corrosion rate for steel was detected for the application of a possible 10 years real maximum dose of the amines in the laboratory as compared to blanks. Application of 700 times higher doses of amines in the laboratory was observed to give anodic protection, and thus reduced corrosion, of steel samples, but to dissolve the surface of a copper sample. The anodic protection was due to the formation of an amine surface film that protected the sample form oxidation. The dissolution of copper was probably due to formation of a copper-amine complex at high pH. A slight increase in corrosion was observed for samples that were exposed to the equivalent of possible 65 years maximum real exposure of amines in the field. This may be explained by freezing point depression and increased time of wetness of the sample surfaces due to accumulation of the amine solute on the sample surfaces in the season with frost.
2013
The present study aimed at the identification and quantification of toxic compounds (nitrosamines and nitramines) resulting from the photochemical oxidation of the two amines (Amine-1 and Amine-2) for use in CO2 capture and the determination of their chemical production yields under various NOx mixing ratios in sunlit chamber experiments at the photo reactor facility EUPHORE in Valencia, Spain. Considering the uncertainties of the two applied nitramine measurement methods, the conversion yield of Amine-1-nitramine for low NOx conditions typical for Mongstad is estimated to range from 1.4% to 4.1%. The candidate for the first generation nitrosamine forming the photo-oxidation of Amine-1 (Amine-1-nitrosamine candidate) was identified by analysis of Thermosorb/N samples in the Amine-1 product yield experiments.
2013
2013
Volatile organic compounds in the museum environment - a PTR-TOF pilot study on canvas samples. NILU F
2013
Number concentration and modal Structure of indoor/outdoor fine particles in four European Cities. NILU F
2013
2013
2013
2013
The effect of controlled indoor activities on the particulate matter mass and number concentrations.
2013
2013
2013
Background concentrations in Norway - Temporal averaging and uncertainty assessment. NILU OR
A system for providing approximate spatial and temporal estimates of the surface background concentrations of PM10 , PM2.5, NO2 , and O3 for a typical year in Norway has been established at NILU in recent years. In 2013, the system was further improved and expanded by carrying out two main tasks: Firstly the spatial component of the system was extended from previously a single year to a 3-year average, thus decreasing the impact of inter-annual variability. Secondly, a preliminary validation of the background estimates was carried out and an approximate uncertainty was calculated for four species in the dataset and is now communicated to the user on the project website. The validation results indicate that overall the average estimated concentrations follow the average observed concentration fairly well. This is particularly true for PM10 and PM2.5. The averaged estimates for O3 and NO2 also follow the averaged observations relatively closely, although NO2 is clearly underestimated at all four validation stations. In terms of quantitative uncertainty estimates for the hourly estimates at the level of individual species, O3 is the parameter which was found to have the lowest uncertainty of all four species. While the median absolute uncertainty for hourly O3 estimates was found to be 18.7 ¿g m-3, the median relative uncertainty was only 33.8 %. Both PM10 and PM2.5 had significantly higher uncertainties, with a median relative uncertainty for the hourly estimates of 90 % and 88 %, respectively. Finally, the hourly estimates for NO2 also showed quite high relative uncertainties with a value of 73 %.
2013
Abu Dhabi Ports Company has procured two fixed Air Quality Monitoring Stations, one situated in Area A of KIZAD outside of the ADPC Site HQ building (ADPC Site Office station) with the other in Khalifa Port (ADPC Port station) adjacent to the EMAL conveyer. NILU UAE commissioned these two sites in December 2012 and has been operating them since then. The results presented in this report have been based upon air quality and meteorological data collected from these two fixed Air Quality Monitoring stations during the reported month.
2013
NILU carried out the screening 2013, This report describes the results, comparing and discussing them with other findings in both Norway and other regions.
2013
2013
The state-of-the-art in on-line CIMS measurements of organic trace gases in the Earth's atmosphere. NILU F
2013
2013