DDT and Malaria Petra Palíková Marcela Filipčíková

DDT Dichlorodiphenyltrichloroethane Dichlorodiphenyltrichloroethane 4,4'-(2,2,2-trichloroethane- 1,1-diyl)bis(chlorobenzene) 4,4'-(2,2,2-trichloroethane- 1,1-diyl)bis(chlorobenzene) 1,1,1-trichloro-2,2-bis(p- chlorophenyl)ethane 1,1,1-trichloro-2,2-bis(p- chlorophenyl)ethane

Chemical formula: C 14 H 9 Cl 5 Chemical formula: C 14 H 9 Cl 5 Molecular mass: g/mol Molecular mass: g/mol Melting point: 108,5 °C Melting point: 108,5 °C Boiling point: 260 °C Boiling point: 260 °C

first modern pesticide and is the most well known organic pesticide first modern pesticide and is the most well known organic pesticide highly hydrophobic colorless solid with a weak, chemical odor highly hydrophobic colorless solid with a weak, chemical odor nearly insoluble in water nearly insoluble in water good solubility in most organic solvents, fat, and oils good solubility in most organic solvents, fat, and oils

History of DDT DDT was originally prepared DDT was originally prepared Paul Müller of Geigy Pharmaceutical in Switzerland discovered the effectiveness of DDT as an insecticide Paul Müller of Geigy Pharmaceutical in Switzerland discovered the effectiveness of DDT as an insecticide The Swiss chemist Paul Hermann Muller was awarded the Nobel Prize for Physiology or Medicine The Swiss chemist Paul Hermann Muller was awarded the Nobel Prize for Physiology or Medicine

first of the modern insecticides early in World War II first of the modern insecticides early in World War II used with great effect to combat mosquitoes spreading malaria, typhus, and other insect-borne human diseases used with great effect to combat mosquitoes spreading malaria, typhus, and other insect-borne human diseases

Malaria Malaria Malaria infects between 300 million and 500 million people every year Malaria infects between 300 million and 500 million people every year 1 million people die from malaria every year Most of those deaths (90%) occur in Africa and mostly in children under the age of 5 1 million people die from malaria every year Most of those deaths (90%) occur in Africa and mostly in children under the age of 5

In many African nations, the problems resulting from malaria are viewed as greater than the potential dangers of DDT In many African nations, the problems resulting from malaria are viewed as greater than the potential dangers of DDT A lot of states stopped using DDT because of harmful effects on human organism A lot of states stopped using DDT because of harmful effects on human organism

Arguments for and against DDT FOR FOR Pesticide Pesticide Insecticide (mosquitoes) Insecticide (mosquitoes) AGAINST AGAINST harmful effects for human organism harmful effects for human organism mutation and illnesses for child mutation and illnesses for child

effectiveness – účinnost, účinky effectiveness – účinnost, účinky awarded – odměněný awarded – odměněný combat – boj, bojovat combat – boj, bojovat insect-borne – hmyzem přenášené insect-borne – hmyzem přenášené occur – vyskytovat se occur – vyskytovat se resulting – vyplývající resulting – vyplývající harmful effect – škodlivý účinek harmful effect – škodlivý účinek