CEE 772

Fall 2005

Homework #2

Use the following TOX raw data to answer the following questions:

		Integrated Peak (ng)
Sample	Volume (mL)	1st column	2nd column
distilled water	50	605	555
200 ug/L MCAA	50	2405	1205
100 ug/L MCAA	50	1490	890
Tap Water	50	3492	1955
Tap Water	50	4059	1538
distilled water	50	510	660
groundwater	100	1288	799
groundwater	100	1892	865
groundwater	100	1484	990
groundwater	100	1553	921
groundwater	100	1399	1020
groundwater	100	1686	952
groundwater	100	1335	1100
distilled water	50	495	600

1. What is the TOX concentration of the tap water sample?
2. Are the two GAC cartridges adequately capturing the organic halogen compounds?
3. What is the % recovery of the MCAA standards?
4. What is the method detection limit? (refer to section 1030 in Standard Methods for this)

Assigned: 24 Oct 2005

Due: 31 Oct 2005