-
-
- 您现在的位置：首页 >> 产品中心 >> 标准物质 >> 加拿大矿产科学室(CCRMP)加拿大矿产科学室(CCRMP)
-
-
中文名称：铀钍矿成分分析标准物质
英文名称：Uranium-Thorium Ore订货以英文名称为准。
产品编号：DL-1aCAS：/
品牌：CCRMP产地：加拿大
标准值：见证书分子式：/
规格 市场价(元) 折后价(元) 供货周期 数量 加入购物车 200g 0.00 0.00 3-4周 加入购物车
-
产品详细介绍
DL-1a铀钍矿成分分析标准物质Uranium-Thorium Ore
Certified Values and 95% Confidence Intervals
Constituent wt %
U 0.0116 ± 0.0003
Th 0.0076 ± 0.0004
Ra-226 1.40 ± 0.04 Bq g-1
Pb-210 1.40 ± 0.02 Bq g-1
Description
DL-1a is intended as a replacement for DL-1 of which the stock is exhausted. It is waste rock typical of the property of Denison Mines Limited in Elliot Lake, Ontario, and is a pale yellow arkose sandstone containing uraninite and brannerite and possibly traces of monazite and uranothorite. The bulk material was dry-ground to minus 74 µm, blended, sampled systematically for analysis by optical fluorimetric and chemical methods to demonstrate homogeneity suitable for use as a reference material, and bottled in 200-g units. Evidence is available that DL-1a is in secular equilibrium.
Certification
The consensus value for uranium is the unweighted mean of 286 accepted analytical determinations by 20 laboratories. Methods included titrimetry, colorimetry, fluorimetry, X-ray fluorescence, neutron activation analysis and radiochemistry.
The consensus value for thorium is the unweighted mean of 187 accepted analytical determinations by 14 laboratories. Methods included colorimetry, X-ray fluorescence, neutron activation analysis, radiometry and isotope dilution mass spectrometry .
Non-certified constituents
The concentration of the following constituents are given for information only.
Value
Fe 0.93%
S 0.41%
Instruction for use
The recommended values for DL-1a pertain to an "as is" basis.
Legal notice
The Canadian Certified Reference Materials Project has prepared this reference material and statistically evaluated the analytical data for the interlaboratory certification program to the best of its ability. The Purchaser by receipt hereof releases and indemnifies the Canadian Certified Reference Materials Project from and against all liability and costs arising out of the use of this material and information.
Reference
The preparation and certification procedures used for DL-1a are given in CANMET Reports 80-10 "DL-1a: A Certified Uranium Thorium Reference Ore", 83-9E "Radium-226 in Certified Uranium References Ores DL-1a, BL-4a, DH-1a and BL-5" and 84-11E "Lead-210 in Certified Uranium Reference Ores DL-1a, BL-4a, DH-1a and BL-5" which are available free of charge on application to:
