The chemistry of Norwegian groundwaters: IV. The pH-dependence of element concentrations in crystalline bedrock groundwaters

被引：74

作者：

Frengstad, B ^{[1
]}

Banks, D

Siewers, U

机构：

[1] Norges Teknisk Nat Vitenskapelige Univ, Inst Geol & Bergteknikk, N-7491 Trondheim, Norway

[2] Norges Geol Undersokelse, N-7491 Trondheim, Norway

[3] Bundesanstalt Geowissensch & Rohstoffe, D-30631 Hannover, Germany

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2001年 / 277卷 / 1-3期

关键词：

hydrogeochemistry; groundwater; crystalline bedrock; pH; trace elements; ICP-MS;

D O I：

10.1016/S0048-9697(00)00867-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A total of 1604 samples of crystalline bedrock groundwaters in Norway have been analysed for pH, major and minor elements. A subset of 476 samples were also analysed for a wide range of trace elements by ICP-MS. The pH of the samples ranges from 5.4 to 9.8, with a predominance of pH values between 8.0 and 8.2. The data-set is divided into five 20-percentile groups according to increasing pH. The concentrations of 60 elements are then displayed as box-plots for each pH group. A line through the five medians yields a visual demonstration of the relationship with, and sensitivity to, pH variations for concentrations of each element. Twelve characteristic trends are distinguishable, from which some of the main hydrogeochemical processes related to pH and groundwater evolution can be inferred. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：101 / 117

页数：17

共 28 条

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