EUROPEAN COMMISSION Directorate General Joint Research Centre Directorate G Nuclear Safety and Security NUCLEAR CERTIFIED REFERENCE MATERIALS 2018 Standards for Nuclear Safety, Security and Safeguards Unit Retieseweg 111 B - 2440 Geel, Belgium Fax: +32-(0)14-590 406 Tel.: +32-(0)14-571 855 E-mail: JRC-GEE-RM-NUCLEAR-SALES@ec.europa.eu https://ec.europa.eu/jrc/en/reference-materials/catalogue Information on CRMs in general: https://ec.europa.eu/jrc/en/reference-materials
CONTENT 1 ISOTOPIC REFERENCE MATERIALS CERTIFIED FOR ISOTOPE AMOUNT RATIO (ABUNDANCE RATIO)...3 1.1URANIUM...3 Uranium hexafluoride...3 Certified Isotopic Reference Material set to test the response of mass spectrometers...5 Certified Isotopic Reference Material set to test the response of mass spectrometers...6 Certified Isotopic Reference Material set to test the response of mass spectrometers...7 1.2PLUTONIUM...8 Certified Isotopic Reference Materials for Mass Spectrometry Measurements...8 Certified Isotopic Reference Materials for Mass Spectrometry Measurements...9 Certified Pu Isotopic Reference Materials for Mass Spectrometric Measurements... 10 1.3THORIUM... 11 2 ISOTOPIC REFERENCE MATERIALS CERTIFIED FOR ISOTOPE AMOUNT CONTENT... 12 2.1 URANIUM... 12 Uranium s... 12 Uranium s (continued)... 13 2.2 PLUTONIUM... 14 Plutonium s... 14 2.3 URANIUM/PLUTONIUM MIXTURES... 15 2.4 THORIUM... 16 2.5 AMERICIUM... 16 2.6 K-EDGE REFERENCE MATERIAL... 16 3 REFERENCE MATERIALS CERTIFIED FOR ELEMENT AMOUNT CONTENT... 17 4 REFERENCE MATERIALS CERTIFIED FOR THE PRODUCTION DATE ("AGE DATING"). 18
3 1 Isotopic reference materials certified for isotope amount ratio (abundance ratio) 1.1 Uranium Uranium hexafluoride Code Description Amount ratios n( 234 U)/n( 238 U) n( 235 U)/n( 238 U) n( 236 U)/n( 238 U) IRMM-019 UF 6 solid 0.000 006 85(4) 0.001 677 5(5) 0.000 036 52(9) 20 g IRMM-020 UF 6 solid 0.000 011 92(6) 0.002 095 7(6) 0.000 286 15(11) 20 g IRMM-021 UF 6 solid 0.000 024 85(8) 0.004 405 2(8) 0.000 000 026 6(8) 20 g IRMM-022 UF 6 solid 0.000 053 28(9) 0.007 256 2(12) 0.000 000 241 5(26) 20 g IRMM-023 UF 6 solid 0.000 339 50(11) 0.033 881(6) 0.000 000 115 3(17) 20 g IRMM-024 UF 6 solid 0.000 290 75(14) 0.053 254(16) 0.000 516 96(13) 20 g IRMM-025 UF 6 solid 0.000 122 45(9) 0.020 436(6) 0.000 148 39(9) 20 g IRMM-026 UF 6 solid 0.000 149 41(10) 0.025 679(8) 0.000 207 30(11) 20 g IRMM-027 UF 6 solid 0.000 231 59(13) 0.041 717(13) 0.000 387 39(12) 20 g
4 Uranium s Code Description Isotope amount fraction ( 100) Amount ratios n( 233 U)/n(U) n( 234 U)/n(U) n( 235 U)/n(U) n( 236 U)/n(U) n( 238 U)/n(U) n( 235 U)/n( 238 U) n( 233 U)/n( 238 U) IRMM-183 5 M HNO 3 < 0.000 01 0.002 01(12) 0.320 49(16) 0.014 60(86) 99.662 90(88) 0.003 215 7(16) 1 g U in 5 ml IRMM-184 5 M HNO 3 < 0.000 01 0.005 24(31) 0.720 96(22) 0.000 019 9(99) 99.273 78(37) 0.007 262 3(22) 1 g U in 5 ml IRMM-185 5 M HNO 3 < 0.000 01 0.017 25(98) 1.965 75(58) 0.000 280(52) 98.016 7(11) 0.020 055 2(60) 1 g U in 5 ml IRMM-186 5 M HNO 3 < 0.000 01 0.028 0(16) 2.984 32(87) 0.003 26(23) 96.984 4(18) 0.030 771 1(92) 1 g U in 5 ml IRMM-187 5 M HNO 3 < 0.000 01 0.036 3(19) 4.516 7(13) 0.006 87(38) 95.440 2(23) 0.047 325(14) 1 g U in 5 ml EC-NRM-199 5 M HNO 3 33.306 4(59) 0.068 3(03) 33.311 0(40) 0.008 2(03) 33.306 1(49) 1.000 15(20) 1.000 01(30) 10 mg U in 5 ml IRMM-3100a 1 M HNO 3 25.417 3(34) 0.009 562(50) 25.029 89(64) 24.921 37(69) 24.621 9(33) 0.05 mg U in 1 ml They are given in parentheses and include a coverage factor k = 2. They apply to the last digit(s) of the value
5 Certified Isotopic Reference Material set to test the response of mass spectrometers Code Description Amount ratios n( 233 U)/n( 235 U) n( 233 U)/n( 238 U) n( 235 U)/n( 238 U) IRMM-073/1 1.000 33(36) 0.991 36(30) 0.991 03(20) IRMM-073/2 0.699 67(25) 0.693 85(21) 0.991 68(20) IRMM-073/3 0.499 85(18) 0.495 91(15) 0.992 12(20) IRMM-073/4 0.299 86(11) 0.297 630(90) 0.992 56(20) IRMM-073/5 0.100 014(36) 0.099 313(30) 0.992 99(20) IRMM-073/6 0.050 092(18) 0.049 746(15) 0.993 10(20) IRMM-073/7 1.6 M HNO 3 0.019 993 6(72) 0.019 857 0(60) 0.993 17(20) 3 µg U in 2 ml IRMM-073/8 0.010 164 2(37) 0.010 095 0(30) 0.993 19(20) IRMM-073/9 0.005 000 0(18) 0.004 966 0(15) 0.993 20(20) IRMM-073/10 0.002 001 19(72) 0.001 987 60(60) 0.993 21(20) IRMM-073/11 0.000 968 92(35) 0.000 962 34(29) 0.993 21(20) IRMM-073/12 0.000 500 88(18) 0.000 497 48(15) 0.993 21(20) IRMM-073/13 0.000 101 821(37) 0.000 101 130(30) 0.993 21(20) IRMM-073/14 0.000 019 995 8(72) 0.000 019 860 0(60) 0.993 21(20) IRMM-073/15 0.000 001 999 48(72) 0.000 001 985 90(60) 0.993 21(20)
6 Certified Isotopic Reference Material set to test the response of mass spectrometers Code Description Amount ratios n( 233 U)/n( 235 U) n( 233 U)/n( 238 U) n( 235 U)/n( 238 U) IRMM-074/1 1.026 85(26) 1.027 11(26) 1.000 254(15) IRMM-074/2 0.307 993(77) 0.308 072(77) 1.000 258(15) IRMM-074/3 0.010 228 8(26) 0.010 231 4(26) 1.000 259(15) IRMM-074/4 IRMM-074/5 IRMM-074/6 1M HNO 3 0.003 073 58(77) 0.001 030 61(26) 0.000 307 778(77) 0.003 074 37(77) 0.001 030 88(26) 0.000 307 858(77) 1.000 259(15) 1.000 259(15) 1.000 259(15) 0.2 mg U in 2 ml IRMM-074/7 0.000 102 603(26) 0.000 102 629(26) 1.000 259(15) IRMM-074/8 0.000 030 801 1(77) 0.000 030 809 1(77) 1.000 259(15) IRMM-074/9 0.000 008 158 7(20) 0.000 008 160 8(20) 1.000 259(15) IRMM-074/10 0.000 001 018 86(25) 0.000 001 019 13(25) 1.000 259(15)
7 Certified Isotopic Reference Material set to test the response of mass spectrometers Code Description Amount ratio n( 236 U)/n( 238 U) IRMM-075/1 1.044 33(37) 10-4 IRMM-075/2 1.114 160(40) 10-5 IRMM-075/3 IRMM-075/4 1M HNO 3 1.040 93(36) 10-6 1.113 742(40) 10-7 1 mg U in 1 ml IRMM-075/5 1.065 19(75) 10-8 IRMM-075/6 1.088 5(63) 10-9
8 1.2 Plutonium Certified Isotopic Reference Materials for Mass Spectrometry Measurements Code Description Amount ratio n( 239 Pu)/n( 242 Pu) IRMM-290/G1 0.101 36(10) IRMM-290/E1 0.232 12(23) 1 mg IRMM-290/C1 Plutonium nitrate 0.466 52(47) IRMM-290/A1 solid 1.025 1(10) A set consists of IRMM-290/B1 2.310 1(23) seven samples, one of each IRMM-290/D1 4.656 7(47) category A through G IRMM-290/F1 10.057(10)
9 Certified Isotopic Reference Materials for Mass Spectrometry Measurements Code Description Amount ratio n( 239 Pu)/n( 242 Pu) IRMM-290a/G2 0.101 88(10) IRMM-290a/E2 0.235 75(24) 1 mg IRMM-290a/C2 IRMM-290a/A2 Plutonium nitrate solid 0.476 28(48) 1.013 5(10) A set consists of IRMM-290a/B2 2.286 9(23) seven units, one of each IRMM-290a/D2 4.545 7(46) category A through G IRMM-290a/F1 10.057(10)
10 Certified Pu Isotopic Reference Materials for Mass Spectrometric Measurements Code Description Amount ratio n( 239 Pu)/n( 242 Pu) IRMM-290b/G3 0.099 93(10) IRMM-290b/E3 0.229 39(23) 1 mg IRMM-290b/C3 IRMM-290b/A3 Plutonium nitrate solid 0.477 06(48) 1.000 7(10) A set consists of IRMM-290b/B3 2.253 7(23) seven units, one of each IRMM-290b/D3 4.787 8(48) category A through G IRMM-290b/F1 10.057(10)
11 1.3 Thorium Code Description Isotope amount fraction ( 100) n( 230 Th)/n(Th) n( 232 Th)/n(Th) Amount ratio n( 230 Th)/n( 232 Th) IRMM-035 1 M HNO 3 IRMM-036 1 M HNO 3 0.001 148 1(78) 99.998 851 9(78) 0.000 011 481(78) 1 mg Th in 1 ml 0.000 311 3(78) 99.999 688 7(78) 0.000 003 113(78) 1 mg Th in 1 ml They are given in parentheses and include a coverage factor k = 2. They apply to the last digit(s) of the value
12 2 Isotopic reference materials certified for isotope amount content 2.1 Uranium Uranium s Code Description Isotope amount content Isotope enrichment IRMM-050 5 M HNO 3 IRMM-051 1 M HNO 3 IRMM-052 5 M HNO 3 IRMM-053 5 M HNO 3 IRMM-054 5 M HNO 3 IRMM-056 5 M HNO 3 4.254 3(11) nmol 10.101(18) nmol 5.301 3(26) µmol 0.211 94(26) µmol 3.954 3(12) µmol 4.172 4(13) µmol 235 U g -1 n( 235 U)/n(U) = 0.999 10 ml 233 U g -1 n( 233 U)/n(U) = 0.980 5 ml 238 U g -1 n( 238 U)/n(U) = 0.993 5 ml 238 U g -1 n( 238 U)/n(U) = 0.993 5 ml 235 U g -1 n( 235 U)/n(U) = 0.932 5 ml 238 U g -1 n( 238 U)/n(U) = 0.993 10 ml
13 Uranium s (continued) Code Description Isotope amount content Isotope enrichment IRMM-3636 1 M HNO 3 IRMM-3636a 1 M HNO 3 IRMM-3636b 1 M HNO 3 IRMM-3660a 1 M HNO 3 IRMM-3660b 1 M HNO 3 2.117 55(26) µmol 2.157 91(35) µmol 0.211 906(26) µmol 0.215 945(35) µmol 10.981 9(30) nmol 11.191 2(33) nmol 0.422 385(44) µmol 42.643(11) nmol n( n( n( 236 U g -1 233 U)/n( 236 U) = 1.019 06 1 ml 233 U g -1 236 U g -1 233 U)/n( 236 U) = 1.019 06 1 ml 233 U g -1 236 U g -1 233 U)/n( 236 U) = 1.019 06 1 ml 233 U g -1 236 U g -1 n( 236 U)/n(U) = 0.9997 1 ml 236 U g -1 n( 236 U)/n(U) = 0.9997 1 ml
14 2.2 Plutonium Plutonium s Code Description Isotope amount content Isotope enrichment IRMM-042a 5 M HNO 3 3.750 7(50) nmol 244 Pu g -1 n( 244 Pu)/n(Pu) = 0.979 10 ml IRMM-043 5 M HNO 3 IRMM-049d 5 M HNO 3 IRMM-049e 5 M HNO 3 IRMM-081a 5 M HNO 3 IRMM-083 2 M HNO 3 IRMM-084 5 M HNO 3 IRMM-085 5 M HNO 3 IRMM-086 5 M HNO 3 0.182 79(55) nmol 0.366 68(18) µmol 0.358 28(45) µmol 0.374 58(26) µmol 3.406 4(22) µmol 37.494(78) pmol 39.098(60) pmol 3.752 4(22) µmol 242 Pu g -1 n( 242 Pu)/n(Pu) = 0.878 10 ml 242 Pu g -1 n( 242 Pu)/n(Pu) = 0.946 10 ml 242 Pu g -1 n( 242 Pu)/n(Pu) = 0.948 10 ml 239 Pu g -1 n( 239 Pu)/n(Pu) = 0.978 5 ml 240 Pu g -1 n( 240 Pu)/n(Pu) = 0.9897 1 ml 244 Pu g -1 n( 244 Pu)/n(Pu) = 0.979 5 ml 242 Pu g -1 n( 242 Pu)/n(Pu) = 0.999 5 ml 239 Pu g -1 n( 239 Pu)/n(Pu) = 0.978 5 ml
15 2.3 Uranium/plutonium mixtures Code Description Isotope amount content Isotope enrichment IRMM-1027q U-Pu solid spike (dried nitrate) 16.306 4(23) µmol 235 U g -1 m( 235 U)/m(U) = 0.177 3.089 9(13) µmol 239 Pu g -1 m( 239 Pu)/m(Pu) = 0.978 2.5 g IRMM-1027r U-Pu solid spike (dried nitrate) 16.885 8(20) µmol 235 U g -1 m( 235 U)/m(U) = 0.186 3.000 6(14) µmol 239 Pu g -1 m( 239 Pu)/m(Pu) = 0.978 2.5 g IRMM-046c 5 M HNO 3 4.463 6(10) µmol 0.354 98(14) nmol 233 U g -1 242 Pu g -1 n( 233 U)/n(U) = 0.998 n( 242 Pu)/n(Pu) = 0.947 10 ml IRMM-090 5 M HNO 3 4.186 8(63) µmol 41.820(67) nmol 233 U g -1 242 Pu g -1 n( 233 U)/n(U) = 0.976 n( 242 Pu)/n(Pu) = 0.942 10 ml
16 2.4 Thorium Code Description Isotope amount content Isotope enrichment IRMM-061 5 M HNO 3 2.474(18) nmol 230 Th g -1 n( 230 Th)/n(Th) = 0.998 5 5 ml They are given in parentheses and include a coverage factor k= 2. They apply to the last digit(s) of the value. 2.5 Americium Code Description Isotope amount content Isotope enrichment IRMM-0243 1 M HNO 3 5.696(11) nmol 243 Am g -1 n( 243 Am)/n(Am) = 0.880 058 n( 241 Am)/n(Am) = 0.119 809 3.5 ml They are given in parentheses and include a coverage factor k= 2. They apply to the last digit(s) of the value. 2.6 K-edge reference material Code Description Isotope amount content Isotope enrichment Comment IRMM-3501 3 M HNO 3 6.542 6(94) µmol 0.706 4(11) mmol 239 Pu g -1 238 U g -1 n( 238 U)/n(U) = 0.993 n( 239 Pu)/n(Pu) = 0.941 ~ 2.5 g Pu L -1 ~ 250 g U L -1 10 ml
17 3 Reference materials certified for element amount content Code Description Element amount content EC-NRM-106 EC-NRM-110 natural uranium dioxide pellets (10 g each) depleted uranium dioxide pellets (1 g each) 881.43(24) mg U g -1 150 g 881.34(13) mg U g -1 25 g EC-NRM-113 uranium ore 3.211(84) mg U g -1 100 or 200 g EC-NRM-114 uranium ore 1.636(58) mg U g -1 100 or 200 g
18 4 Reference materials certified for the production date ("age dating") Code Description Production date based on the n( 230 Th)/n( 234 U) radio-chronometer IRMM-1000a IRMM-1000b Uranyl nitrate (dried) Uranyl nitrate (dried) 09/07/2012 (UTC) ± 13 day 20 mg 09/07/2012 (UTC) ± 13 day 50 mg The production date is the date of the last chemical separation of 230 Th from 234U in the uranium reference material. The production date is expressed as dd/mm/yyyy, relative to the coordinated universal time (UTC). The uncertainty is the expanded uncertainty with a coverage factor k = 2 corresponding to a level of confidence of about 95 % estimated with ISO/IEC Guide 98-3, Guide to the Expression of Uncertainty in Measurement (GUM), ISO, 2008.