Env. Std. CRM

Environmental matrix reference materials

NMIJ CRM 7901-a: Arsenobetaine solution

	Certified Values ± Uncertainty (U, k=2) (mg kg^-1)	Analytical methods
Arsenobetaine	19.98 ± 0.47	ICP-MS, ICP-AES, GF-AAS LC-ICP-MS

NMIJ CRM 7306-a: Organotins in Marine Sediment

	Certified Values ± Uncertainty (U, k=2) (µg kg^-1 as Sn)	Analytical methods
Tributyltin(TBT)	44 ± 3	ID-GC-MS, ID-GC-ICP-MS, LC-ICP-MS
Dibutyltin(DBT)	51 ± 2	ID-GC-MS, ID-GC-ICP-MS, LC-ICP-MS
Monobutyltin(MBT)	67 ± 3	ID-GC-MS, ID-GC-ICP-MS, LC-ICP-MS
Triphenyltin(TPhT)	6.9 ± 1.2	ID-GC-MS, ID-GC-ICP-MS, LC-ICP-MS
Diphenyltin(DPhT)	3.4 ± 0.5	ID-GC-MS, ID-GC-ICP-MS

NMIJ CRM 7201-a: Trace Elements in River Water (Natural Level)
NMIJ CRM 7202-a: Trace Elements in River Water (Elevated Level)

Elements	Certified Values ± Uncertainty (U, k=2)		Units
Elements	CRM 7201-a (Natural Level)	CRM 7202-a (Elevated Level)	Units
B	3.25 ± 0.14	48.7 ± 0.8	µg kg^-1
Al	6.1 ± 0.4	15.0 ± 0.4	µg kg^-1
Cr	0.140 ± 0.005	4.81 ± 0.18	µg kg^-1
Mn	0.05 ± 0.006	5.03 ± 0.14	µg kg^-1
Fe	2.02 ± 0.14	30.1 ± 0.9	µg kg^-1
Ni	0.048 ± 0.002	1.07 ± 0.03	µg kg^-1
Cu	0.137 ± 0.015	10.1 ± 0.3	µg kg^-1
Zn	0.294 ± 0.013	10.3 ± 0.3	µg kg^-1
As	0.15 ± 0.02	1.18 ± 0.04	µg kg^-1
Se	---	1.04 ± 0.04	µg kg^-1
Mo	0.186 ± 0.002	0.186 ± 0.002	µg kg^-1
Cd	0.0018 ± 0.0002	1.02 ± 0.02	µg kg^-1
Sb	0.0085 ± 0.0002	0.0098 ± 0.0003	µg kg^-1
Ba	5.81 ± 0.16	5.78 ± 0.08	µg kg^-1
Pb	0.0063 ± 0.0008	1.01 ± 0.02	µg kg^-1

Na	3.68 ± 0.11	3.68 ± 0.08	mg kg^-1
K	0.84 ± 0.04	0.85 ± 0.03	mg kg^-1
Mg	1.25 ± 0.04	1.24 ± 0.05	mg kg^-1
Ca	4.65 ± 0.17	4.67 ± 0.14	mg kg^-1

NMIJ CRM 7303-a: Trace Elements in Lake Sediment

Elements	Certified Values ± Uncertainty (U, k=2) (mg kg^-1)	Analytical methods
Sb	0.69 ± 0.02	ID-ICP-MS, ICP-MS
As	8.6 ± 1.0	ICP-MS, GFAAS, ICP-AES, ICP-HRMS
Cd	0.342 ± 0.017	ID-ICP-MS, ICP-MS, GFAAS
Cr	39.1 ± 2.8	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Co	11.1 ± 1.1	ICP-MS, ICP-AES, GFAAS
Cu	23.1 ± 3.1	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Pb	31.3 ± 1.1	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Hg	0.067 ± 0.006	ID-ICP-MS, ICP-MS, PAAS*
Mo	0.96 ± 0.07	ID-ICP-MS, ICP-MS
Ni	21.8 ± 2.5	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Se	0.24 ± 0.04	ID-ICP-MS, ICP-MS, ICP-HRMS
Ag	0.098 ± 0.004	ID-ICP-MS, ICP-MS
Sn	4.21 ± 0.13	ID-ICP-MS, ICP-MS
Zn	107 ± 5	ID-ICP-MS, ICP-MS, ICP-AES

*: Pyrolysis-Au amalgamation-AAS

NMIJ CRM 7302-a: Trace Elements in Marine Sediment

Elements	Certified Values ± Uncertainty (U, k=2) (mg kg^-1)	Analytical methods
Sb	1.22 ± 0.05	ID-ICP-MS, ICP-MS
As	22.1 ± 1.4	ICP-MS, GF-AAS, ICP-HRMS
Cd	1.32 ± 0.04	ID-ICP-MS, ICP-MS, GFAAS
Co	12.4 ± 1.5	ICP-MS, ICP-AES, GFAAS
Cr	145 ± 6	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Cu	57.8 ± 2.3	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Pb	82.7 ± 3.8	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Hg	0.52 ± 0.03	ID-ICP-MS, ICP-MS, PAAS*
Mo	1.98 ± 0.24	ID-ICP-MS, ICP-MS
Ni	25.8 ± 1.2	ID-ICP-MS, ICP-MS, ICP-AES, GFAAS
Se	0.61 ± 0.07	ID-ICP-MS, ICP-MS, ICP-HRMS
Ag	0.49 ± 0.02	ID-ICP-MS, ICP-MS
Sn	18.5 ± 0.8	ID-ICP-MS, ICP-MS
Zn	401 ± 16	ID-ICP-MS, ICP-MS, ICP-AES

*: Pyrolysis-Au amalgamation-AAS

NMIJ CRM 7301-a: Butyltins in Marine Sediment

	Certified Values ± Uncertainty (U, k=2) (mg kg^-1 as Sn)	Analytical methods
Tributyltin(TBT)	0.044 ± 0.004	ID-GC-MS, ID-GC-ICP-MS
Dibutyltin(DBT)	0.056 ± 0.006	ID-GC-MS, ID-GC-ICP-MS
Monobutyltin(MBT)	0.058 ± 0.013	ID-GC-MS, ID-GC-ICP-MS