Initial Reports, Volume 209
Ms 209IR-102
Chapter 2, Table T8. Estimates of accuracy and precision for Carlo Erba gas chromatography analyses of CO2, H2O, and S.

Notes: Preferred values: BAS140 (Sparks and Zuleger, 1995), JP-1 (Sims et al., 1988), and 147-895D-10W (Puchelt et al, 1996). NA = not applicable (no preferred value).

Standard	Date (2003)	Volatiles: CO2 (wt%)	H2O (wt%)	S (ppm)

JP-1	23 May	0.31	3.04	
	27 May		2.39	
	28 May	0.30	2.94	
	31 May	0.29	2.73	
	5 Jun	0.30	2.95	
	10 Jun	0.33	3.05	
	13 Jun	0.33	3.21	
	16 Jun	0.32	2.43	
	21 Jun	0.36	2.32	

Average (wt%):		0.32	2.79	
Preferred value (wt%):			3	
Standard deviation (wt%):		0.02	0.33	
Precision (%):		7.00	11.74	
Accuracy (%):		NA	0.55	

BAS140	23 May	0.12	1.20	841
	27 May		1.42	
	28 May	0.12	1.05	1237
	31 May	0.11	1.06	929
	5 Jun	0.11	1.12	546
	10 Jun	0.13	1.16	1479
	13 Jun	0.11	1.26	628
	16 Jun	0.13	1.93	493
	21 Jun	0.16	1.78	581

Average (wt%):		0.12	1.33	842
Preferred value (wt%):		0.05	1.12	900
Standard deviation (wt%):		0.02	0.32	357
Precision (%):		12.86	24.00	42.42
Accuracy (%):		58.79	15.90	-6.93

147-895D-10W	23 May	0.98	10.76	
	27 May	0.88	10.43	
	28 May	1.08	11.03	
	31 May	1.05	11.33	
	5 Jun	0.92	11.66	
	10 Jun	1.41	11.36	
	13 Jun	1.09	13.78	
	16 Jun	0.97	9.99	
	21 Jun	1.14	11.14	

Average (wt%):		1.06	11.28	
Preferred value (wt%):		0.95	9.62	600
Standard deviation (wt%):		0.16	1.07	
Precision (%):		14.84	9.48	
Accuracy (%):		11.24	17.23