What is PAH analysis?
Polynuclear aromatic hydrocarbons (PAHs) are carcino- genic compounds that are commonly found in the environ- ment as a result of incomplete combustion of tobacco, tar, and fuels. Many regulatory methods exist for the analysis of these compounds in all kinds of samples, such as air, water, soil, and food.
How do you test for polycyclic aromatic hydrocarbons?
Non-biological techniques for the detection of PAHs
- IR spectroscopy. The qualitative aspect of infrared spectroscopy is to determine the functional groups of molecules in the sample.
- Raman spectroscopy.
- Fluorescence spectroscopy.
- Liquid chromatography.
- Gas chromatography.
- High-performance liquid chromatography.
What are polycyclic aromatic hydrocarbons used for?
They are mostly used as intermediaries in pharmaceuticals, agricultural products, photographic products, thermosetting plastics, lubricating materials, and other chemical industries [13]. However, the general uses of some PAHs are: Acenaphthene: manufacture of pigments, dyes, plastics, pesticides and pharmaceuticals.
How can we prevent hydrocarbons?
Tips to help reduce the unintentional drinking of hydrocarbons: Teach children about poisons at an early age. Keep products in original containers, not food or drink containers. (Products such as gasoline and lamp oils are commonly found in the garage or storage areas in bottles other than the original containers.)
How do you reduce polycyclic aromatic hydrocarbons in meat?
Preheating or wrapping of meat products or use of casing before grilling enables to reduce PAHs contamination. The presence of filters on smoking equipment enables to decrease PAHs amount in smoked fish. Application of marinade to meat before grilling or smoking can lead to PAHs reduction in the processed food.
How do you Analyse aromatic hydrocarbons in air samples?
The analysis of PAH samples is usually carried out by high-performance liquid chromatography equipped with a fluorescence detector or gas chromatography-mass spectrometry with electron and negative chemical ionization methods.
What are the sources of aromatic hydrocarbons?
Occurence of Aromatic Hydrocarbons Simple aromatic hydrocarbons come from two main sources: Coal and petroleum. Coal is a complex mixture of a large number of compounds, most of which are long-chain compounds.
What are sources of PAHs?
Polycyclic aromatic hydrocarbons (PAHs) are a class of chemicals that occur naturally in coal, crude oil, and gasoline. They also are produced when coal, oil, gas, wood, garbage, and tobacco are burned. PAHs generated from these sources can bind to or form small particles in the air.
What are the effects of polycyclic aromatic hydrocarbons?
Long-term health effects of exposure to PAHs may include cataracts, kidney and liver damage, and jaundice. Repeated skin contact to the PAH naphthalene can result in redness and inflammation of the skin. Breathing or swallowing large amounts of naphthalene can cause the breakdown of red blood cells.
What are the sources of polycyclic aromatic hydrocarbons?
Polycyclic aromatic hydrocarbons (PAHs) are a class of chemicals that occur naturally in coal, crude oil, and gasoline. They result from burning coal, oil, gas, wood, garbage, and tobacco. PAHs can bind to or form small particles in the air.
What can you do to lessen the effects of hydrocarbons on the environment?
One quick and efficient way of significantly reducing the impact of hydrocarbon combustion is to eliminate the least energy efficient fuel, that is also the worst pollutant – and replace it with a solution that is both cleaner and more efficient.
How do you manage hydrocarbons?
Hydrocarbon Management Procedure Periodically turn the pile (more frequent turnings will accelerate degradation of hydrocarbons). Hydrocarbon degradation can also be accelerated by addition of water to the pile beyond that afforded by incident rainfall and addition of nutrient such as chicken manure.
Where do polycyclic aromatic hydrocarbons come from?
What makes meat carcinogenic?
Meat also contains heme iron, which can facilitate production of carcinogenic NOCs. Cooking – especially high-temperature cooking including cooking meats over a flame (e.g., pan-frying, grilling, barbecuing) – can also produce carcinogenic chemicals, including heterocyclic aromatic amines (HAA) and PAHs.
Where are polycyclic aromatic hydrocarbons found?
What is PAH in water?
Polycyclic aromatic hydrocarbons (PAHs) are a group of xenobiotic chemicals which are made up of carbon and hydrogen. They represent a group of contaminants with high melting and boiling points, low vapor pressure, and very low water solubility [6,7].
What is the importance of aromatic hydrocarbons?
One of the main uses for aromatic hydrocarbons is as a non-polar solvent for other molecules. Thus, aromatic hydrocarbons can be used as additives in gasoline, paints, lacquers, and other solutions. Their low reactivity also contributes to their use as a solvent.
How can we prevent hydrocarbon pollution?
The remediation of hydrocarbon polluted wastewater can be achieved by three methods, which are phytoremediation, bioremediation and chemical remediation. Phytoremediation entails the use of plants to reduce the volume, mobility and toxicity of contaminants in soil and water.