Martin Klaproth discovered the chemical elements uranium, zirconium, and cerium.
He verified the discoveries of titanium, tellurium, and strontium, naming the first two of these elements.
Beginnings and Education
Martin Heinrich Klaproth was born on December 1, 1743 in the central German town of Wernigerode. He was the third of four children of a master tailor, and he was educated at Wernigerode’s public grammar school.
At age 16, Klaproth moved 20 miles (30 km) to the town of Quedlinburg where he became an apprentice in an apothecary – an old fashioned pharmacy.
Pharmacist and Marriage
Between the ages of 23 and 28, Klaproth worked in various locations as a pharmacist.
In 1771, age 27, he came to Berlin to work as a manager in a pharmacy owned by Valentin Rose. Rose was interested in chemistry, and passed his interest to Klaproth.
Unfortunately, Rose died soon after Klaproth’s arrival in Berlin. As manager, Klaproth continued to run the pharmacy, and also took responsibility for educating Rose’s four children for the next nine years.
In 1780, age 36, Klaproth married Christiane Sophie Lehmann, the wealthy niece of the eminent analytical chemist Andreas Sigismund Marggraf. Among a number of firsts, Marggraf was the first person to extract sugar from beets, giving birth to the sugar beet industry.
After his marriage, Klaproth bought a pharmacy from Marggraf and set up his own laboratory.
Klaproth’s Career as a Chemist
- In 1782, age 38, Klaproth became a lecturer and pharmaceutical examiner for the College of Physicians. His name became well known in medical and academic circles.
- In 1784, age 40, he began lecturing at the Mountain and Metallurgical Institute.
- In 1787, he became part-time professor of chemistry at the Berlin Artillery School.
- In 1788, he was elected to Berlin’s Academy of Sciences.
- In the years 1789 to 1803, he made his discoveries of three new elements.
- In 1800, he became a fully salaried chemist at the academy. He sold his pharmacy and moved into an apartment at the academy to pursue chemical research full time.
- In 1810, he was appointed to the Chair of Chemistry at the newly founded Friedrich Wilhelm University in Berlin.
- In the years 1795 to 1815, he published Contributions to the Chemical Knowledge of Mineral Entities in six volumes.
Family and the End
In 1780, age 36, Klaproth married Christiane Sophie Lehmann. They had one son, Julius, who became a professor of Asiatic languages.
In 1814, Klaproth suffered the first of several strokes that would eventually kill him.
Martin Klaproth died on New Year’s Day 1817, age 73.
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