Global S&T Development Trend Analysis Platform of Resources and Environment
Intercomparison 1529: pH, Conductivity, Alkalinity, NO3-N, Cl, SO4, Ca, Mg, Na, K, TOC, Al, Fe, Mn, Cd, Pb, Cu, Ni, and Zn | |
Escudero, Carlos | |
2015 | |
出版年 | 2015 |
语种 | 英语 |
国家 | 挪威 |
出版者 | Norsk institutt for vannforskning |
领域 | 气候变化 |
英文摘要 | 81 laboratories were invited to participate in the current intercomparison. Of these, 40 from 19 different countries accepted the invitation and 39 of them submitted results to the Organization. Two sample sets were prepared: one for the determination of major ions and one for heavy metals. Based on the general target accuracy of 20 % or the special accuracy limit for pH and conductivity ( 0,2 pH units and 10 % respectively), 88 % 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: chloride, sulphate, calcium, magnesium, sodium, potassium, cadmium, copper and nickel, with acceptance rate of 90% or higher. For pH, only 64 percent of the reported results fulfilled the acceptance criteria. 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. Participants may have observed higher concentrations in the sample set AB if compared to previous intercalibrations. This sample set has been spiked with NaCl, KNO3, NaCl and CaCl2 and MgSO4 salts. The purpose was to compare results for freshwaters with higher content of salts than the naturally occurring in Norwegian lakes and rivers |
英文关键词 | VDP::Matematikk og naturvitenskap: 400 VDP::Mathematics and natural scienses: 400 Kvalitetskontroll / Quality Control Overvåking / Monitoring Sammenligning / Intercomparison Sur nedbør / Acid Rain |
URL | 查看原文 |
来源平台 | Center for International Climate and Environmental Research-Oslo (CICERO) |
文献类型 | 科技报告 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/2075 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Escudero, Carlos. Intercomparison 1529: pH, Conductivity, Alkalinity, NO3-N, Cl, SO4, Ca, Mg, Na, K, TOC, Al, Fe, Mn, Cd, Pb, Cu, Ni, and Zn:Norsk institutt for vannforskning,2015. |
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