Optical Fiber Sensors to Detect Volatile Organic Compound in Sick Build- ing Syndrome Applications potx

... Building Technology Journal, 2010, 4, 113-120 113 1874-8368/10 2010 Bentham Open Open Access Optical Fiber Sensors to Detect Volatile Organic Compound in Sick Build- ing Syndrome Applications ... tapering the fiber (top-right) and bending the fiber (down-center). Input lightTransduced lightInput lightTransduced light Optical Fiber Sensors to Detect Volatile Organic Compound The ... multiplexed with other sensors. There are proposed sev-eral networks to handle with sensors [43], and this is very interesting when thinking about installing them in a building. All of them could...

Tài liệu Human-induced changes in US biogenic volatile organic compound emissions: evidence from long-term forest inventory data ppt

... uncertainty in ﬁve southeastern states. All sources of error in estimat- ing changes in basal area are covered by Phillips et al.(2000), including the photo-point- dependent error due in estimating ... slash pine (Pinus elliotii) from pine plantations.The increase in monoterpene emissions in the deepsouth was because of an increase in loblolly pine(P. taeda), both in pine plantations and in ... 1737–1755contains all trees within plot j that were measured attime t, excluding trees greater than 5in in diameter thatwere not measured in the ﬁrst inventory (followingMartin, 1982). A decadal...

Tài liệu METHOD 21 - DETERMINATION OF VOLATILE ORGANIC COMPOUND LEAKS doc

... applicable ducting or pipingexists. Also, determine if any sources exist in the ductingor piping where emissions could occur upstream of thecontrol device. If the required ducting or piping existsand ... instrument meeting the followingspecifications is required:6.1 The VOC instrument detector shall respond to thecompounds being processed. Detector types that may meetthis requirement include, but ... used to prevent plugging of the instrument.6.5 The instrument shall be equipped with a probe orprobe extension for sampling not to exceed 6.4 mm (1/4 in) in outside diameter, with a single...

Volatile organic compound measurements at Trinidad Head, California, during ITCT 2K2: Analysis of sources, atmospheric composition, and aerosol residence times pot

... are increasingrapidly in response to seasonally increasing levels of in- coming solar radiation. As a result, the background con-centrations of all compounds loading significantly on factor3 ... addition to helping to quantify regional photochemistry, can thus provide usefulinsights regarding the nature and number of source typesimpacting the sampling region [e.g., Goldstein and Schade,2000], ... found to fallbelow the curve, as has been observed in other data sets[Jobson et al., 1998], and were not included in the regres-sion. Interestingly, filtering out local influences using the3...

Microorganisms Associated with Volatile Organic Compound Production in Spoilt Mango Fruits docx

... injection was conducted in split less mode at 250 0C for 3min by using an inlet of 0.75 mm i.d to minimize peak broadening. Chromatographic separations were performed by using DB-WAX analytical ... fruits in Sokoto metropolis; extract and identifying volatile organic compounds associated with spoilt sweet pepper using GC-MS.Materials and MethodsSample collectionTen spoilt and healthy intact ... According to the method of (Wanakhachornkrai and Lertsiri, 2003) approximate quantication of volatile compounds was estimated by the integration of peaks on the total ion chromatogram using...

Chemical Composition of Vehicle-Related Volatile Organic Compound Emissions in Central California pdf

... laboratories in San Francisco, except for the 1991 data of Zielinska and Fung. After eluting DNPH cartridge samples in acetonitrile, aldehyde and ketone concentrations were quantified using high-performance ... apparent in Figure 3, with the benzene weight fraction in tunnel emissions dropping from 6.0 ± 0.3% in 1995 to 3.6-4.2% in 1996 and later years. To reduce the total aromatic content in phase ... volatile alkenes present in gasoline. 19Figure 5. Composition of non-methane organic compounds in liquid gasoline by class.Figure 6. Normalized reactivity of liquid gasoline calculated using...

Volatile organic compound emission and other trace gases from selected animal buildings ppt

... 77(4):429-440Lindinger W, Hansel A, Jordan A (1998) Online monitoring of volatile organic compounds at the ppt levels by means of Proton-Transfer-Reaction Mass Spectrometry (PTR-MS) : medical applications, ... channelled to a storage tank outside the pigsty. The solid manure under the oor was pushed out once to twice a week. Feeding times during sampling were between 7:30 and 8:30 in the morn- ing and ... following day just before noon remains unexplained. Methanol, VFAs, TMA and other VOC mixing ratios (not shown) appeared to correlate with temperature. This can be explained by taking into account...

Atmospheric volatile organic compound measurements during the Pittsburgh Air Quality Study: Results, interpretation, and quantification of primary and secondary contributions pot

... missing PM 2.5 concen-trations were estimated by scaling to aerosol volume prior to performing the factor analysis.Table 2. Factor Analysis Results: Winter Dataa Compound LoadingsFactor 1:Local ... pattern,higher during the day than at night, and with prominentpeaks during the morning and evening rush hours. Note thatfactor 1 accounted for 44% of the data set variability,indicating that automobile ... statistical probability of incorrectly attribut- ing a nonzero fraction of the variance to a given factor). Theanalysis was limited to six factors since including morefactors failed to account for more...

Detection of Pseudomonas aeruginosa in sputum headspace through volatile organic compound analysis potx

... aeruginosa in sputum culture but were known to be chronicallycolonized according to the Leeds criteria [32]. Theremaining nine patients had no history of having P. aer -uginosa cultured in their ... growingP. aeruginosa [27,28], its odour increases when addingtryptophan. This is because 2-aminoacetophenone isan intermediate in the biosynthetic pathway for quinazo-lines, a pathway branching ... −0.59 Volatile Organic Compounds (VOCs) were ranked according their VID withhigh values indicating a positive correlation with Pseudomonas aeruginosainfection and negative values indicating a...

Volatile Organic Compound (VOC) - Vluchtige Organische Stoffen (VOS) potx

... calculated boiling point approx. 255 °C)“ - This definition relates to ozone formation 2004/42/EG („Deco Paints Directive”, April 2004) „any organic compound having a boiling point less than ... contain traces of solvents (< 0.5 weight-percent) due to contamination of ingredients. - This definition relates to Indoor Air Quality 2. Volatile Organic Compounds – VOC Organic compounds ... directive”) „any organic compound with at normal conditions for pressure a boiling point (or initial boiling point) lower than or equal to 250° C“ - This definition relates to ozone formation...

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