| 报告题名: | Intercomparison 1428: pH, Conductivity, Alkalinity, NO3-N, Cl, SO4, Ca, Mg, Na, K, TOC, Al, Fe, Mn, Cd, Pb, Cu, Ni, and Zn (ICP Waters report 120/2014) |
| 作者: | Escudero-Oñate, Carlos
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| 出版者: | Norsk institutt for vannforskning
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| 出版年: | 2014
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| 发表日期: | 2014-09
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| 国家: | 挪威
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| 语种: | 英语
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| 英文关键词: | VDP::Matematikk og naturvitenskap: 400
; VDP::Mathematics and natural scienses: 400
; Kvalitetskontroll / Quality Control
; Overvåking / Monitoring
; Prøvningssammenligning / Intercomparison
; Sur nedbør / Acid Rain
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| 中文主题词: | 钾
; 碱度
; 硝酸盐
; PH
; 导电性
; 离子
; PH值
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| 主题词: | POTASSIUM
; ALKALINITY
; NITRATE
; PH
; CONDUCTIVITY
; IONS
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| 英文摘要: | In the current edition of the ICP Waters Intercomparison program, 64 laboratories were invited to participate. 33 from 12 different countries accepted the invitation and all the participants submitted results to the Organization. Two sample sets were prepared: one for the determination of major ions and one for heavy metals. This year a slightly acidic sample was prepared to make the intercomparison more relevant for monitoring of acidic waters. The samples of the set AB where slightly spiked with hydrochloric acid to get a pH close to 6. The detailed procedure is described in Appendix B of the document. Based on the general target accuracy of 20 % or the special accuracy limit for pH and conductivity ( 0,2 pH units and 10 % respectively),76 % of the overall results were considered acceptable. This is slightly better than last year, but in line with previous editions. The best results were reported for the analytical variables: conductivity, chloride, calcium, potassium and sodium, with acceptances of 90% or higher.
The lowest percentage of acceptable results was observed for alkalinity and nitrate+nitrite-N, where only 26 and 14% of the reported results were acceptable respectively. As observed in earlier intercomparisons, nitrate showed clear signs of unstability and a large variation in values were reported from the participating laboratories. Harmonization of the analytical methods used and of the practical procedures followed, may be the most important way to improve the comparability for these parameters. |
| URL: | https://brage.bibsys.no/xmlui/bitstream/handle/11250/222581/6718-2014_200dpi.pdf?sequence=4&isAllowed=y
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/28960
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 6718-2014_200dpi.pdf（2091KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Escudero-Oñate, Carlos. Intercomparison 1428: pH, Conductivity, Alkalinity, NO3-N, Cl, SO4, Ca, Mg, Na, K, TOC, Al, Fe, Mn, Cd, Pb, Cu, Ni, and Zn (ICP Waters report 120/2014). 2014-01-01.
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