USGS OFR 96-525 Continuous flow-hydride spectrometry, table 2

Arsenic, antimony, and selenium by flow injection or continuous flow-hydride generation-atomic absorption spectrometry

Table 2 Analytical performance summary for As, Sb, and Se by HG-AAS (solid phase samples in ppm, water samples in ppb)

[A=National institute of Standards and Technology (NIST), 1992;B=Water Resources Division; C=NIST, 1976; D=Harms, 1988; E=NIST, 1979; F=Wilson, 1994; remaining pv from Potts and others, 1992]

Reference	Description	n	Mean	s	pv	%RSD	%R
Antimony, Sb
SDC-1	mica schist	10	0.40	0.05	0.54	12	75
GSD-6	stream sediment	10	1.7	0.1	1.25	? 6	134
SRM 2709	soil	10	7.5	0.5	7.9	A cv 7	95
Arsenic, As
T81	water (trace elements)	10	11	1	10.3	B 9	108
T89	water (trace elements)	10	17	2	17.7	B 12	98
SRM 1575	pine needles	10	0.20	0.01	0.21	C cv 5	95
SDC-1	mica schist	10	0.29	0.04	0.22	14	132
GSD-6	stream sediment	10	14	0.5	13.6	4	106
SRM 2709	soil	10	18	0.8	17.7	A cv 4	102
Selenium, Se
T81	water (trace elements)	10	14	1	12.7	B 7	109
T89	water (trace elements)	20	23	3	17.8	B 13	127
ALF	alfalfa leaves	20	0.18	0.02	0.19	D 11	95
SRM 1635	coal fly ash	10	1.0	0.1	0.9	E 10	106
CLB-1	coal	20	2.5	0.2	2.1	F 8	119
SRM 2709	soil	20	1.5	0.1	1.57	A cv 7	95
Duplicate samples	k	n	Mean	s	%RSD	Concentration range	No. of < (total)	No. of < (pairs)
Anitmony
Rock	7	2	0.9	0.1	11	0.4 to 1.5	0	0
Arsenic
Water	----	----	----	----	----	----	12	6
Rock	31	2	8.0	0.2	3	0.2 to 22	6	3
Coal	5	2	14.62	0.02	0.1	0.1 to 70	4	2
Plant	7	2	1.03	0.07	7	0.04 to 6.8	0	0
Selenium
Water	5	2	29	2	8	1.4 to 79	10	5
Rock	44	2	1.33	0.04	3	0.05 to 9.0	5	2
Coal	10	2	2.59	0.08	3	0.4 to 8.4	0	0
Plant	8	2	0.98	0.02	2	0.04 to 5.8	2	1
Method blank		n	Mean	s	3s	5s
Anitmony
Rock		189	0.008	0.1	0.3	0.6
Arsenic
Water		14	0.1	0.5	2	3
Rock		43	0.07	0.1	0.3	0.6
Coal		9	0.01	0.01	0.04	0.06
Plant		8	0.03	0.01	0.02	0.04
Selenium
Water		21	0.002	0.006	0.02	0.03
Rock		39	0.03	0.04	0.1	0.2
Coal		10	0.05	0.02	0.06	0.10
Plant		9	0.01	0.01	0.02	0.04