This Standard Reference Material (SRM®) is intended primarily for validating analytical methods and measurements for the determination of toxic elements in human urine. A unit of NIST-2668 consists of five vials of each of two levels. Each vial contains nominally 1.5 mL of urine. NIST-2668 is shipped on dry ice, and it should be stored at -70 °C until use. /// Sample value(s) - please ask for current certificate.
Contents
Analyte
CAS Number
Concentration
Unit
Additional information
Method
Arsenic (As)
[7440-38-2]
10,81 ± 0,54
µg/L
Level I
Cadmium (Cd)
[7440-43-9]
1,056 ± 0,052
µg/L
Level I
Caesium (Cs)
[7440-46-2]
4,90 ± 0,30
µg/L
Level I
Cobalt (Co)
[7440-48-4]
0,816 ± 0,058
µg/L
Level I
Lead (Pb)
[7439-92-1]
1,234 ± 0,061
µg/L
Level I
Vanadium (V)
[7440-62-2]
0,980 ± 0,086
µg/L
Level I
Antimony (Sb)
[7440-36-0]
22,4 ± 1,0
µg/L
Level II
Arsenic (As)
[7440-38-2]
213,1 ± 4,4 2,02
µg/L
Level II
Barium (Ba)
[7440-39-3]
254,6 ± 3,2 2,07
µg/L
Level II
Beryllium (Be)
[7440-41-7]
54,5 ± 2,4
µg/L
Level II
Cadmium (Cd)
[7440-43-9]
16,40 ± 0,25
µg/L
Level II
Caesium (Cs)
[7440-46-2]
221 ± 12
µg/L
Level II
Chromium (Cr)
[7440-47-3]
27,7 ± 2,1
µg/L
Level II
Cobalt (Co)
[7440-48-4]
51,8 ± 1,7
µg/L
Level II
Copper (Cu)
[7440-50-8]
134,1 ± 5,4
µg/L
Level II
Lead (Pb)
[7439-92-1]
137,9 ± 3,6
µg/L
Level II
Manganese (Mn)
[7439-96-5]
47,6 ± 3,4
µg/L
Level II
Molybdenum (Mo)
[7439-98-7]
1687 ± 58
µg/L
Level II
Nickel (Ni)
[7440-02-0]
115,3 ± 5,2
µg/L
Level II
Vanadium (V)
[7440-62-2]
48,5 ± 4,6
µg/L
Level II
Miscellaneous
Certificate of Analysis (specimen)
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