sludge analysis Articles
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Headspace gas chromatography with flame ionization detection (HS-GC-FID) for the determination of dissolved methane in wastewater
There is currently a need for a simple, accurate and reproducible method that quantifies the amount of dissolved methane in wastewater in order to realize the potential methane that can be recovered and account for any emissions. This paper presents such a method, using gas chromatography with flame ionization detection fitted with a GS-Gas PRO column coupled with a headspace auto sampler. A ...
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Characteristic and potential sources of polychlorinated dibenzo‐p‐dioxins and dibenzofurans in agriculture soils in Beijing, China
Polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs) were analyzed in 25 background and 80 agriculture soil samples collected from 21 sites in Beijing, China. The levels of PCDD/Fs in the north agriculture soils were low (0.15–0.58 ng I‐TEQ/kg), which were compatible with those of the background soils (0.091–0.35 ng I‐TEQ/kg). However, in the south agriculture soils, there was an ...
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Environmental Analysis of BTEX Compounds in Soil, Water and Sludge by GC / PID
Because of the widespread use and history of indiscriminate disposal practices of gasoline and fuel oils, their analysis in environmental samples is in high demand. Gasoline and diesel are both complex mixtures containing up to 400 individual compounds. The BTEX group (Benzene, Toluene, Ethylbenzene, and the Xylenes) are naturally occurring constituents of gasoline and diesel (although ...
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Environmental Analysis of Volatile Compounds in Soil, Water and Sludge by GC / PID / DELCD
The analysis of volatile compounds (b.p. <140°C) in environmental samples represents contamination from active or recent discharges. EPA methods 502.2, 601, 602, 8010, and 8021 test for pollutants from a broad array of commercial and industrial sources, including gasoline and diesel spills, solvent discharges, and disinfection by-products. The test methods include mixtures of up to 62 ...
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GC-MS/MS analysis of PAH and PCB in environmental samples
The polychlorinated biphenyls (PCB) and polyaromatic hydrocarbons (PAH) are among the most commonly analysed compound classes in environmental analysis. This article demonstrates how hydrogen carrier gas can be used in place of helium for GC-MS/MS analysis of these compounds. Analysis of polyaromatic hydrocarbons (PAH) is typically conducted using HPLC with UV- and fluorescence detection. ...
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