spectrometry Articles
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High performance liquid chromatography–tandem mass spectrometry for rapid and sensitive analysis of six polycyclic aromatic hydrocarbons in wastewater
A sensitive and fast method was developed to quantitatively analyse the six polycyclic aromatic hydrocarbons (fluoranthene (FLT), benzo[b]fluoranthene (BbF), benzo[k]fluoranthene (BkF), benzo[a]pyrene (Bap), benzo[ghi]perylene (BghiP) and indeno[1,2,3-cd]pyrene (INPY)) by high performance liquid chromatography (UPLC) coupling with tandem mass spectrometry (MS/MS). Chromatographic separation was ...
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Analysis of EU15+1 PAHs in Soil by the AutoMate-Q40: An Automated QuEChERS Solution
Abstract Polycyclic Aromatic Hydrocarbons (PAHs) are a large group of organic compounds found in the environment. PAHs are monitored by the US Environmental Protection Agency and European Union due to their carcinogenic characteristics. In recent global events, PAHs have been a concern ever since the late 1980’s. QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that ...
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A Dynamic Site Investigation: Adaptive Sampling and Analysis Program for Operable Unit 1 at Hanscom Air Force Base, Bedford, Massachusetts
Abstract In this study, field analytical instrumentation and methods were used to support a risk assessment study at the airfield at Hanscom Air Force Base (HAFB, Bedford, Massachusetts). The site investigation is part of an ongoing effort to determine contaminant risk to ground water from soil. The field tools supported a dynamic workplan/adaptive sampling and analysis demonstration. Over a ...
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Passive sampling for target and non‐target analyses of moderately polar and nonpolar substances in water
The applicability of silicone rubber and low density polyethylene (LDPE) as passive sampling materials for target and non‐target analyses of moderately polar and non‐polar substances was assessed through a field deployment of samplers along a small polluted stream in Oslo (Norway). Silicone and LDPE samplers of identical surface area (but different volumes) were deployed at six sites in the ...
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Particulate matter and particle-bound polycyclic aromatic hydrocarbons in the Dapu road tunnel in Shanghai
Airborne Particulate Matter (PM) was collected in a cross-river road tunnel using portable air samplers and a cascade impactor. Sixteen EPA priority Polycyclic Aromatic Hydrocarbons (PAH) in the PM were quantified by gas chromatography/mass spectrometry. Profiles and diagnostic ratios of PAHs were investigated, and size distribution of PM mass and PAHs were discussed. High concentrations of PM2.5 ...
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Determination of Polycyclic Aromatic Hydrocarbons in Seafood by an Automated QuEChERS Solution
Abstract Polycyclic Aromatic Hydrocarbons (PAHs) are a large group of organic compounds found naturally in the environment. PAHs are monitored by the US Environmental Protection Agency due to their carcinogenic characteristics. In recent global events, PAHs have come to the attention for contamination in sea food samples due to the oil spills. In the oceanic environment, PAHs are bio-available ...
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Time‐dependent relative potency factors (REPs) for polycyclic aromatic hydrocarbons and their derivatives in the H4IIE‐luc bioassay
The H4IIE‐luc transactivation bioassay for aryl hydrocarbon receptor (AhR) agonists was used to investigate relative potency factors (REPs) of 22 individual polycyclic aromatic hydrocarbons (PAHs) and their oxygenated‐, methylated‐ and N‐containing derivatives (azaarenes), which are often present in PAH‐contaminated soils. Naphthacene and dibenz[ah]acridine exhibited greater AhR‐mediated ...
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Multispecies acute toxicity evaluation of wastewaters from different treatment stages in a coking wastewater‐treatment plant
Coking wastewater contributes approximately 5% of the total discharge volume of industrial wastewaters every year in China. The toxicity of coking wastewater to aquatic organisms is still unknown. The authors evaluated the toxicity of wastewater from different treatment stages in a coking wastewater treatment plant, South China, using 5 test species belonging to different trophic levels: ...
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Application of a biofilm formed by a mixture of yeasts isolated in Vietnam to degrade aromatic hydrocarbon polluted wastewater collected from petroleum storage
In this study, three good biofilm-forming yeast strains, including Candida viswanathii TH1, Candida tropicalis TH4 and Trichosporon asahii B1, were isolated from oil-contaminated water and sediment samples collected in coastal zones of Vietnam. These strains were registered in the GenBank database with the accession numbers JX129175, JX129176 and KC139404 for strain TH1, TH4 and B1, ...
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Occurrence and removal efficiency of six polycyclic aromatic hydrocarbons in different wastewater treatment plants
Occurrence and removal efficiency of six polycyclic aromatic hydrocarbons (PAHs) (fluoranthene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, benzo[ghi]perylene and indeno[1,2,3-cd]pyrene) in wastewater were monitored at different treatment processes in three wastewater treatment plants (WWTPs) by using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). ...
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Surface Decontamination of Crude Oil by DeconGel 1101 and 1102
ABSTRACT Surface decontamination efficacy determination of DeconGelTM 1101 and 1102 on aluminum, stainless steel, and concrete surfaces contaminated with Crude Oil (polyaromatic hydrocarbons fraction) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling), 8321B (analysis), and 1654A (Analysis of PAH ...
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Surface Decontamination of Motor Oil by DeconGel 1101 and 1102
Abstract Surface decontamination efficacy determination of DeconGel™ 1101 and 1102 on aluminum, stainless steel, and concrete surfaces contaminated with Motor Oil (polyaromatic hydrocarbons fraction) was performed with LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling), 8321B (analysis), and 1654A (Analysis of ...
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Bio-enhanced activated carbon filter with immobilized microorganisms for removing organic pollutants in the Songhua River
Five dominant microorganisms including four kinds of Pseudomonas and one kind of Bacillus were isolated from the Songhua River. The organic pollutants removal potential and community composition of these five dominant microorganisms immobilized on activated carbon filter, which is called the bio-enhanced activated carbon filter (BEAC), were investigated to compare with the naturally formed ...
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Surface Decontamination of Aromatic Solids (Naphthalene) by DeconGel 1101
Abstract Surface decontamination efficacy determination of DeconGelTM 1101 on stainless steel, aluminum, and concrete surfaces contaminated with aromatic solids (naphthalene) was performed using LC/MS (Liquid Chromatography/Mass Spectrometry) according to Environmental Protection Agency (EPA) SW-846 Methods: 3500C (sampling) and 8321B (analysis). Hazardous Materials Relevance Naphthalene is a ...
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Innovations in Site Characterization. Case Study: Hanscom Air Force Base, Operable Unit 1 (Sites 1, 2, and 3)
Executive Summary Field analytical instrumentation and methods were used to support a site characterization study at the Airfield at Hanscom Air Force Base (HAFB) Operable Unit 1. HAFB is located in Middlesex County, Massachusetts, and occupies land in the towns of Bedford, Concord, Lexington, and Lincoln. U.S. Air Force military operations began in 1941 and continued through 1973. With the ...
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Fast analysis of semi-volatile organic compounds using PTV-GC–TOF MS
The evaluation of semi-volatile organic compounds (SVOCs) in environmental matrices poses many challenges for the analyst, not least the vast number that may be encountered in any given analysis. In addition, analyte reactivity and the potential for multiple analytes to co-elute makes achieving the required method detection limits (LODs or MDLs) quickly and cost-effectively a formidable task ...
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Understanding Thermal Desorption: A Comprehensive Guide
Thermal desorption is a powerful technique used in various fields, including environmental science, analytical chemistry, and material science. It involves the process of heating a material to release volatile compounds or contaminants absorbed within it. This technique is widely employed for the analysis, remediation, and purification of solids, liquids, and gases. In this comprehensive guide, ...
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