William Horwitz
Encyclopedia
William Horwitz was an analytical chemist
who is notable for formulating a description of the relationship between the variability of chemical measurements and the concentration of the analyte. This relationship, called the Horwitz curve applies only to the between-laboratory variability of measurements.
Horwitz worked for the U.S. Food and Drug Administration (FDA) for 57 years until his retirement in 2000 and was head of the Association of Official Analytical Chemists
for 24 years.
The Horwitz curve is "one of the most intriguing relationships in modern analtyical chemistry"; it is related to the Variance-to-mean ratio.
Analytical chemistry
Analytical chemistry is the study of the separation, identification, and quantification of the chemical components of natural and artificial materials. Qualitative analysis gives an indication of the identity of the chemical species in the sample and quantitative analysis determines the amount of...
who is notable for formulating a description of the relationship between the variability of chemical measurements and the concentration of the analyte. This relationship, called the Horwitz curve applies only to the between-laboratory variability of measurements.
Horwitz worked for the U.S. Food and Drug Administration (FDA) for 57 years until his retirement in 2000 and was head of the Association of Official Analytical Chemists
AOAC International
AOAC International is a non-profit scientific association with headquarters in Gaithersburg, Maryland, USA. It publishes standardised, chemical analysis methods designed to increase confidence in results of chemical and microbiologic analyses...
for 24 years.
The Horwitz curve is "one of the most intriguing relationships in modern analtyical chemistry"; it is related to the Variance-to-mean ratio.