Biphenyl is an organic compound that forms colorless crystals. It has a distinctively pleasant smell. Biphenyl is an aromatic hydrocarbon with a molecular.

Slides:



Advertisements
Similar presentations
POLYCHLORINATED BIPHENYL EFFECTS ON AVIAN HEPATIC ENZYME INDUCTION AND THYROID FUNCTION Catherine M. Webb and F. M. Anne McNabb Department of Biological.
Advertisements

Halogenated Aromatic Hydrocarbons PCBs (polychlorinated biphenyls), PCDDs (dioxin)
One Upon a Time Organic compounds – compounds obtained from living organisms Inorganic compounds – compounds obtained from non living things.
1.
ENVIRONMENTAL SCIENCE 13e CHAPTER 14: Environmental Hazards and Human Health.
Goals  Determine which chemicals present (or potentially present) in the Lake Champlain basin would cause detrimental effects  Determine the pathways.
Happy Orcas. Dead Orcas State of Southern Resident Orcas Almost 20% orcas died between 1995 and Reproductive females have not produced young in.
The Hudson River PCB Problem
Happy Orcas. Dead Orcas State of Southern Resident Orcas Almost 20% orcas died between 1995 and Reproductive females have not produced young in.
Organic Chemistry HCC H C C C CC C H H H H H H H O H H H H H C C C H H H H C C C H H H H H H H H.
Dr Seemal Jelani1 BENZENE An Introduction. Aromaticity Hydrocarbons aliphaticaromatic alkanes alkenes alkynes Dr Seemal Jelani2.
Chapter 1—An Introduction to Organic Chemistry and Carbon
Gretchen DeBaun. General Information Highly toxic persistent organic pollutants (POPs) Found world-wide Used predominantly as dielectric fluids in capacitors.
PCB Polychlorinated biphenyl. What are PCBs? PCBs belong to a broad family of man-made organic chemicals known as chlorinated hydrocarbons. PCBs were.
POLICHLOROWANE BIFENYLE (PCB) POLYCHLORINATED BIPHENYL (PCBS)
BIOACCUMULATION Chapter 2.3. Chemical Pollutants Humans have been introducing synthetic (man-made) chemicals into the environment. Some examples are:
POTENTIAL ROLE OF CYTOCHROME P450 3A4 (CYP3A4) IN THE PCB104-MEDIATED BARRIER DYSFUNCTION OF HUMAN MICROVASCULAR ENDOTHELIAL CELLS Yong Woo Lee 1, Sung.
When we try to pick out anything by itself, we find it hitched to everything else in the universe. John Muir When we try to pick out anything by itself,
What risks do these pollutants pose to us? To determine this we need to understand the following.
Biological Hazards Epidemiology – the study of factors affecting the health and illness of a population Dose Response Curve – not caused by living organisms.
Ross MacNames Edward Jackson Samantha Quiroga.  Elevated levels of Polychlorinated Biphenyls (PCBs) found in sediment of the Little Brazos River
EOG Review levels of organization Cells Tissue Organs Organ System Organisms.
TRAINING FOR THE HEALTH SECTOR
1 Alkanes and Aromatic Hydrocarbons Organic Compounds Bonding in Hydrocarbons Naming Alkanes Properties of Alkanes.
Organic Chemistry Dr. Michael P. Gillespie. Introduction Organic chemistry is the study of carbon containing compounds. It was once thought that all organic.
Department of Chemistry CHEM1020 General Chemistry *********************************************** Instructor: Dr. Hong Zhang Foster Hall, Room 221 Tel:
An Introduction to Organic Chemistry. Orgins Originally defined as the chemistry of living materials or originating from living sources Wohler synthesized.
Benzene The aromatics. Benzene  Benzene and its derivatives are part of a special group called aromatics.  When it is a substituent group it is called.
Polychlorinated Biphenyls (PCBs)
What are PCB’s PCB’s are polychlorinated biphenyls, which are a group of manufactured organic chemicals. Contains 209 individual chlorinated chemicals.
Persistent Organic Pollutants (POPs)
Polychlorinated biphenyl. What is it? PCBs belong to a broad family of man-made organic chemicals known as chlorinated hydrocarbons. They have a range.
PCBs What’s this ?. But really … They are more or less viscous or resinous liquids, insoluble in water, colourless or yellowish. They only break down.
Subtitle Ch. 31 Notes: Immune System and Disease.
Slide 1 of 29 Copyright Pearson Prentice Hall 19–3 Diseases Caused by Bacteria and Viruses.
EHS 507 Food Exposures: Fruits and Vegetables  Fruits and vegetables may become contaminated by multiple pathways –Purposeful spraying or soil treatment.
Organic Chemistry HCC H C C C CC C H H H H H H H O H H H H H C C C H H H H C C C H H H H H H H H.
Organic Molecules and Functional Groups A functional group is an atom or a group of atoms with characteristic chemical and physical properties. It is the.
Organic Chemistry (Alkanes) Organic: Any chemical compound that contains carbon, with the exception of oxides (CO 2 ), carbonates (CO 3 2- ), and carbides.
 DDT is a synthetic chemical compound once used widely in US and throughout the world as pesticide- a chemical substance used to kill weeds, insects,
Environmental Hazards and Human Health. Are Baby Bottles & Food Cans Safe To Use? 1.Some synthetic chemicals act as hormone mimics and disrupt the human.
Microbes and disease Microbes and Disease: Establishing a Connection History and Relevance of Koch's Postulates And The Germ Theory of Infectious Disease.
Cumulative Risk Assessment: A Critical Step Forward in Human Health Protection Deborah A. Cory-Slechta Department of Environmental Medicine University.
FUNCTIONAL GROUPS IN ORGANIC COMPOUNDS. Naturally occurring organic compounds are found in plants, animals, and fossil fuels All of these have a plant.
Aromatic Compounds. Discovery of Benzene Isolated in 1825 by Michael Faraday who determined C:H ratio to be 1:1. Synthesized in 1834 by Eilhard Mitscherlich.
CONCURRENT ENROLLMENT
Aromatic Compounds and Benzene
Organic Chemistry C H H C C H C H H O C.
12.8 Aromatic Compounds In 1825, Michael Faraday isolated a hydrocarbon called benzene, which consists of a six-carbon ring with alternating double bonds.
Lecture 9 Monday 2/6/17.
Aromatic compounds.
BIOACCUMULATION.
Dr Paul T Francis, MD Community Medicine College of Medicine, Zawia
BIOACCUMULATION.
Physical Properties of Alkanes
Chapter 3 Organic compounds.
Unit 3, Lesson 8: Finding Empirical Formulae
5.5 Aromatic Hydrocarbons
Hydrocarbons Chemistry ch 21.
Introduction Organic chemistry is the study of molecules that contain carbon Carbon is special because: - can form 4 strong covalent bonds - can bond with.
14 – Aromatic Hydrocarbons
Infection Control for Medical Asepsis
PESTICIDES AND CHILDREN as a Susceptible Population
Alkenes.
AROMATIC HYDROCARBONS
Aromatic compounds.
By Dr.S.V. Lamture Asso. Prof. &Head Dept of chemistry
Structure of aliphatic hydrocarbons
ENVIRONMENTAL SCIENCE
Alkenes.
Presentation transcript:

Biphenyl is an organic compound that forms colorless crystals. It has a distinctively pleasant smell. Biphenyl is an aromatic hydrocarbon with a molecular formula (C6H5)2. It is notable as a starting material for the production of polychlorinated biphenyls (PCBs), which were once widely used as dielectric fluids and heat transfer agents. Biphenyl is also an intermediate for the production of a host of other organic compounds such as emulsifiers, optical brighteners, crop protection products, and plastics. Biphenyl is insoluble in water, but soluble in typical organic solvents. The biphenyl molecule consists of two connected phenyl rings.

The immune system is critical for fighting infections and diseases of the immune system have very serious potential implications for the health of humans and animals. Individuals with diseases of the immune system may be more susceptible to pneumonia and viral infections.

Reproductive effects of PCBs have been studied in a variety of animal species, including Rhesus monkeys, rats, mice and mink. Rhesus monkeys are generally regarded as the best laboratory species for predicting adverse reproductive effects in humans. Most significantly, PCB exposures were found to reduce birth weight conception rates and live birth rates of monkeys and other species and PCB exposure reduced sperm counts in rats. Effects in monkeys were long lasting and were observed long after the dosing with PCBs occurred.