Integrated Sampling and Analysis Methods for Determining NO<sub><i>x</i></sub>Emissions at Electric Utility Plants

Margeson, John H.; Mitchell, William J.; Suggs, Jack C.; Midgett, M.R.

doi:10.1080/00022470.1982.10465533

Cited by 8 publications

(6 citation statements)

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“…The A-P methods were developed for determination of NO* emissions in electric utility and nitric acid plant stacks (8).…”

Section: Resultsmentioning

confidence: 99%

“…Two Method 7 samples were taken every 10 min. The purpose of the duplicate Method 7 samples was to accurately determine the precision for this method that would be used in subsequent statistical analysis (8). The purpose of the NO* analyzer was to observe any real-time variations in the process emissions that might help explain any unusual results and to serve as the standard for determination of the collection efficiency of NO* (as N03") in the A-P impingers.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

An integrated method for determining nitrogen oxide (NOx) emissions at nitric acid plants

Margeson¹,

Knoll²,

Midgett³

et al. 1984

Anal. Chem.

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“…The A-P methods were developed for determination of NO* emissions in electric utility and nitric acid plant stacks (8).…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

An integrated method for determining nitrogen oxide (NOx) emissions at nitric acid plants

Margeson¹,

Knoll²,

Midgett³

et al. 1984

Anal. Chem.

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“…Water depth, turbidity, Electrical Conductivity (EC), and Dissolved Oxygen (DO) of marsh water was measured in the field with a portable multimeter, which was previously calibrated, while the other physical and chemical characteristics of the water samples were analyzed in the lab according to the methods of the American Public Health Association (APHA) [13] . The gravimetric method [14] , five −day Biological Oxygen Demand (BOD) test [15] , and Colorimetric method [16] were used to determine Total Dissolved Solids (TDS), BOD, and NO 2 − , respectively. Ca 2+ , Mg 2+ , and Total Hardness (TH) were determined using Ethylenediaminetetraacetic acid (EDTA) method.…”

Section: Methodsmentioning

confidence: 99%

Environmental assessment of Al-Hammar Marsh, Southern Iraq

Al-Gburi

Al-Tawash

Allafta

2017

Heliyon

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Aim(a) To determine the spatial distributions and levels of major and minor elements, as well as heavy metals, in water, sediment, and biota (plant and fish) in Al-Hammar Marsh, southern Iraq, and ultimately to supply more comprehensive information for policy-makers to manage the contaminants input into the marsh so that their concentrations do not reach toxic levels. (b) to characterize the seasonal changes in the marsh surface water quality. (c) to address the potential environmental risk of these elements by comparison with the historical levels and global quality guidelines (i.e., World Health Organization (WHO) standard limits). (d) to define the sources of these elements (i.e., natural and/or anthropogenic) using combined multivariate statistical techniques such as Principal Component Analysis (PCA) and Agglomerative Hierarchical Cluster Analysis (AHCA) along with pollution analysis (i.e., enrichment factor analysis)MethodsWater, sediment, plant, and fish samples were collected from the marsh, and analyzed for major and minor ions, as well as heavy metals, and then compared to historical levels and global quality guidelines (WHO guidelines). Then, multivariate statistical techniques, such as PCA and AHCA, were used to determine the element sourcing.ResultsWater analyses revealed unacceptable values for almost all physio-chemical and biological properties, according to WHO standard limits for drinking water. Almost all major ions and heavy metal concentrations in water showed a distinct decreasing trend at the marsh outlet station compared to other stations. In general, major and minor ions, as well as heavy metals exhibit higher concentrations in winter than in summer. Sediment analyses using multivariate statistical techniques revealed that Mg, Fe, S, P, V, Zn, As, Se, Mo, Co, Ni, Cu, Sr, Br, Cd, Ca, N, Mn, Cr, and Pb were derived from anthropogenic sources, while Al, Si, Ti, K, and Zr were primarily derived from natural sources. Enrichment factor analysis gave results compatible with multivariate statistical techniques findings. Analysis of heavy metals in plant samples revealed that there is no pollution in plants in Al-Hammar Marsh. However, the concentrations of heavy metals in fish samples showed that all samples were contaminated by Pb, Mn, and Ni, while some samples were contaminated by Pb, Mn, and Ni.Discussion and conclusionsDecreasing of Tigris and Euphrates discharges during the past decades due to drought conditions and upstream damming, as well as the increasing stress of wastewater effluents from anthropogenic activities, led to degradation of the downstream Al-Hammar Marsh water quality in terms of physical, chemical, and biological properties. As such properties were found to consistently exceed the historical and global quality objectives. However, element concentration decreasing trend at the marsh outlet station compared to other stations indicate that the marsh plays an important role as a natural filtration and bioremediation system. Higher element concentrations in winter were due to ...

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“…At 28 days the quality of SF concrete is constantly higher than the quality of the practically identical Portland bond concrete. As the extent of SF builds, the usefulness of solid reductions in any case its momentary mechanical property, for example, 28-day compressive quality improves [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Strength Properties of HVFA Concrete by using Fly Ash and Silica Fume

2019

IJITEE

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Concrete is the most generally utilized development material on the planet. Fly Ash use is a worldwide intuition as its expansion to bond solid supplements for strong concrete. At that point the high volume fly debris has been utilized in numerous elevated structures, modern structures, water text style structures, solid streets and moved compacted solid dams. Expansion of silica smoke and Super plasticizer to high volume fly debris solid found to expand the quality properties. Fly debris improves the nature of solid, prompting the expanded assistance life of solid structures. Cements having a lot of fly debris (generally from half) are named as high-volume fly debris (HVFA) concrete. Silica smolder, which is seen as more receptive than the fly debris and it fundamentally, improves the quality of cement. In the present examination, an endeavor is made to contemplate the impact of compressive quality of high volume fly debris concrete with differing extent of silica smoke and fly debris. Concrete is supplanted by fly debris and silica rage 50 to 80% and 0 to 15% by weight individually. The compressive quality advancement of silica smolder altered high-volume fly debris blends drenched in water up to 7 to 45 days is accounted for. As the water content is low in high volume fly debris concrete, the draining is low and regularly insignificant. Setting time is minimal longer than that of traditional cement. This is a result of low concrete substance, low pace of response and high substance of super plasticizer. The examination uncovered that by keeping up a consistent measurements of superior super plasticizer alongside fly debris and silica seethe, it is conceivable to keep up an ideal droop esteem for example functionality, along these lines fulfilling the vast majority of the cutting edge basic applications. Additionally the confined impact of silica seethe on the high volume fly debris concrete with a water bond proportion of 0.40 as been examined. The outcomes show that there is a momentous increment in the compressive quality of cement on substitution of bond by silica smoke and fly debris and furthermore acquired 10% substitution of silica seethe by bond on high volume fly debris solid invigorates higher compressive in the present examination.

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Integrated Sampling and Analysis Methods for Determining NO_xEmissions at Electric Utility Plants

Cited by 8 publications

References 3 publications

An integrated method for determining nitrogen oxide (NOx) emissions at nitric acid plants

An integrated method for determining nitrogen oxide (NOx) emissions at nitric acid plants

Environmental assessment of Al-Hammar Marsh, Southern Iraq

Strength Properties of HVFA Concrete by using Fly Ash and Silica Fume

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Integrated Sampling and Analysis Methods for Determining NOxEmissions at Electric Utility Plants

Cited by 8 publications

References 3 publications

An integrated method for determining nitrogen oxide (NOx) emissions at nitric acid plants

An integrated method for determining nitrogen oxide (NOx) emissions at nitric acid plants

Environmental assessment of Al-Hammar Marsh, Southern Iraq

Strength Properties of HVFA Concrete by using Fly Ash and Silica Fume

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Product

Resources

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Integrated Sampling and Analysis Methods for Determining NO_xEmissions at Electric Utility Plants