This blog has discussed organic chemistry before. The biological chemistry of

Carbon, oxygen, nitrogen, fluorine, phosphorus, sulfur, magnesium, potassium, iodine, chlorine, sodium and iron.

Just for controversy there are also elements called Chalcogen. They are unique and are sometimes considered organic, although, they are not found in any multi-vitamin;  selenium (Se), tellurium(Te), and the radioactive element polonium (Po) and there are some who consider the synthetic element livermorium (Lv) is predicted to be a chalcogen. Basically, chalcogens react with oxygen and can react with oxygen inside the body.

Everyone will recognize polonium as the poison of Russian agents for the KGB. So, Chalcogens are organic, but, they aren't necessarily helpful to life.

Organic chemical pollutants – are those chemicals of organic origin or that could be produced by living organisms or are based of matter formed by living organisms. Common organic chemical pollutants include:

Crude oil and petroleum refined products (e.g., gasoline, diesel fuel, kerosene, mineral spirit, motor oil, lubricating oil);

Solvents (e.g., acetone, MEK, toluene, benzene, xylene) used in industry as well as in many household products;

Chlorinated solvents (e.g., PCE, TCE, 1,1,1-TCA, 1,2-DCA, 1,1,2-TCA) used in industrial degreasing processes, as well as in dry cleaning, and in various household products;

PAHs (polyaromatic hydrocarbons) are found in petroleum products, crude oil, but are also a result of burning activities (e.g., from coal power plants as well as historical manufacturing gas plants);

PCBs (polychlorinatedbiphenyl ethers) which are now banned but were used in transformers and are already present in large amounts in environment

Alcohols (e.g., ethanol, methanol, isopropanol) are used in a large variety of applications and household products;

Trihalomethanes (e.g., chloroform, dibromochloromethane, chlorobromomethane, bromoform) which are common products of water chlorination

Phenols are usually an indication of waste water and a result of industrial processes;

Plastics are a result of industrial processes as well as our daily activities involving using and disposing of a large variety of plastics (e.g., bags, bottles, containers);

Pesticides / Insecticides / Herbicides are commonly used in agriculture and may contain toxic organic chemicals and metals (such as mercury and arsenic);

Detergents (e.g., nonylphenol ethoxilate) include a variety of chemical compounds with surface activity;

Organo-metalic compounds (e.g., organo-arsenicals, organo-mercurials) are usually pesticides / insecticides / herbicides.