水系沉积物标准物质研制

程志中; 刘妹; 张勤; 顾铁新; 黄宏库

水系沉积物标准物质研制

1.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000
2.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000
3.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000
4.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000
5.
中国地质科学院地球物理地球化学勘查研究所, 河北廊坊 065000

基金项目:

国土资源地质大调查项目(1212010511218)

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出版历程
- 收稿日期: 2011-06-13

Preparation of Geochemical Reference Materials of Stream Sediments

1.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
2.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
3.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
4.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China
5.
Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China

摘要

摘要: 为满足区域地球化学调查及矿产勘查的需要,新研制了15个水系沉积物标准物质,其中6个样品是原有水系沉积物标准物质的复制,9个新研制的样品主要采自中国北方的森林沼泽和干旱荒漠特殊景观区。样品粒度依据区域地球化学调查规范的要求,森林沼泽区采样粒级为2.0~0.22 mm,干旱荒漠区采样粒级为4.76~0.90 mm,山区和丘陵地区的采样粒级为小于0.22 mm。样品在室内晾干后在110℃烘24 h,置于大型高铝瓷球磨机粉碎并混匀,使样品中小于0.074 mm的部分大于99%以上。样品采用波长色散X射线荧光光谱进行进行均匀性检验,方差检验的F值小于临界值,所有元素的RSD均小于4%,大部分元素的RSD小于3%,P、Mn、Ti、Fe₂O₃、K₂O等元素的RSD小于1%,证明样品均匀性良好。经2年内4次分析,检验结果表明对所检验的元素和成分均未发现统计学意义的明显变化,证明样品的稳定性良好。采用多家家实验室用不同原理的方法联合定值,邀请全国15家有资质的实验室采用准确度较高的方法分析测试约72种组分,根据ISO导则35和国家一级标准物质研制规范的要求,计算15种水系沉积物标准物质中72种元素和组分的标准值(部分组分给出参考值)和不确定度,这些新研制的标准物质是原有水系沉积物标准物质的一个补充。
- 水系沉积物 /
- 标准物质 /
- 均匀性 /
- 标准值 /
- 不确定度
Abstract: In order to meet the needs of regional geochemical survey and mineral exploration, 15 reference materials of stream sediment were prepared as 6 of total 15 were duplicates for previous reference materials, 9 were new developed reference materials sampled from special landscape of forest, swamp and desert on northern China. Based on the requirements of regional geochemical survey, the size fractions for samples from froest-swamp, desert and mountain-hillyground area were 2.0-0.22 mm, 4.76-0.90 mm and less than 0.22 mm, respectively. The samples were heated in oven at 110 ℃ for 24 h after being dried down at lab. Then, the samples were crushed and the 99% final sizes were less than 0.074 mm by large-scale high Al porcelain ball mill. The good homogeneous was tested by wavelength dispersion X-ray fluorescence spectrum with F values were less than the critical value and RSDs were less than 4%. The RSDs of most elements were less than 3% and that of P, Mn, Ti, Fe₂O₃ and K₂O were less than 1%.The stability was tested by 4 times analysis during 2 years and there was no significant change for all results. Fifteen certified laboratories in China participated to analysis about 72 components by suing high precision analytical method based on ISO guideline 35 and guideline for national first grade reference material preparation. The certified values(some were reference values) and RSD were presented for 72 components for 15 stream sediments reference materials. The new prepared geochemical reference materials enhanced greatly the previous system of stream sediments reference materials.
- stream /
- sediment /
- reference /
- material /
- homogeneity

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参考文献(18)

Dybczynski R, Tugsavul A, Suschny O. Soil-5, a new IAEA certified reference material for trace element determination[J]. Geostandards Newsletter, 1979, 3: 61-67.

Gladney E S, Burns C E, Roelants I. Compilation of elemental concentration data for the United States Geological Survey's geochemical exploration reference samples GXR-1 to GXR-6[J].Geostandards Newsletter, 1982, 8: 119-154.

Gladney E S, Roelants I. Compilation of elemental concentration data for USGS geochemical exploration reference materials GXR-1 to GXR-6[J]. Geostandards Newsletter, 1988, 14: 21-118.

Lynch J. Provisional elemental values for eight new geochemical lake sediment and stream sediment reference materials LKSD-1, LKSD-2, LKSD-3, LKSD-4, STSD-1, STSD-2, STSD-3 and STSD-4[J]. Geostandards Newsletter, 1990,14: 153-167.

Xie X J, Yan M C, Li L Z,Shen H J. Geochemical reference samples, drainage sediment GSD1-8 from China[J]. Geostandard Newsletter, 1985, 9:83-159.

中华人民共和国地质矿产部地质专报,地球化学标准参考样的研制与分析方法GSD1-8 [M].北京:地质出版社,1986:1-23.

Xie X J, Yan M C. Usable values for chinese standard reference samples of stream sediments, soils and rocks: GSD9-12, GSS1-8 and GSR1-6[J]. Geostandard Newsletter, 1985,9:277-280.

中华人民共和国地质矿产部地质专报,地球化学标准参考样的研制与分析方法GSR1-6,GSS1-8,GSD9-12[M].北京:地质出版社, 1987: 1-30.

鄢明才,王春书.地球化学标准物质的研制——植物、光谱、金[M],北京:地质出版社,1991: 1-181.

颜茂弘,鲍琪儿,王祖荫,应志春,梁国立,罗代洪.岩石标准物质均匀性的XRF检验法[J].岩矿测试,1988,5(4):228-231.

茅祖兴.XRF检验标准物质中痕量元素的均匀性[J].分析测试学报,1994,13(3):19-23.

李国会,樊守忠.X射线荧光光谱法在标准物质均匀性检验中的应用[J].地质实验室,1995,11(1):40-43.

李国会.均匀性检验中用X计数与含量计算F值的比较[J].地质实验室,1996,12(4):249-252.

叶家瑜,江宝林.区域地球化学勘查样品分析方法[M].北京:地质出版社, 2004: 1-192.

岩石矿物分析编写组.岩石矿物分析(第一分册)[M].3版.北京:地质出版社,1991:244-296.

柯瑞华.化学成分测量不确定度的评定[J].冶金分析,2004,24(1): 63-68.

韩永志.化学测量不确定度的估计和表示[S].北京: 国家标准物质研究中心,1999.

鄢明才.地球化学标准物质标准值不确定度估算探讨[J].岩矿测试,2001,20(4):287-293.