Toxic Equivalency Quantity Calculator^©

Compound	Concentration		TEF		TEQ
Units:
2,3,7,8-TCDD		X	1	=
2,3,7,8-PeCDDs		X	0.5	=
2,3,7,8-HXCDDs		X	0.1	=
2,3,7,8-HpCDDs		X	0.01	=
OCDD		X	0.001	=
			CDF Subtotal	=
2,3,7,8-TCDF		X	0.1	=
1,2,3,7,8-PeCDF		X	0.05	=
2,3,4,7,8-PeCDF		X	0.5	=
2,3,7,8-HxCDFs		X	0.1	=
2,3,7,8-HpCDFs		X	0.01	=
OCDF		X	0.001	=
			CDF Subtotal	=
			Total	=

Input the concentration of dioxins on the left, input which units the measurements are in, press the button for the value you would like to calculate, and the program will give you that value. All other dioxins have TEF values of 0 and are not important in calculating TEQ.

This Java based calculator was developed by David Stears and Matt Stanislawski, students at the Illinois Math and Science Academy who are working on a mentorship program with GCI. Their assistance is appreciated.