『Abstract
　he distribution of several minor and trace elements mainly in fresh (dominating TDS 160-400 mg/l) groundwater of Latvia have been investigated by the Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) technique. An evaluation of results of about 700 analyses leads to the conclusion that concentrations of these elements is influenced by: pH-Eh conditions, groundwater residence time and diffuse contamination, whereas the role of water-bearing sediments is of secondary importance. Most trace elements are characterised by low mobility under alkaline and reducing conditions; concentrations in confined aquifers are much smaller than the Maximum Permissible Values for drinking water. The strongest anomalies of REE, Al and P were found in shallow groundwater around the former agrochemical storehouses.

Keywords: Groundwater chemistry; Trace elements; ICP-MS; pH-Eh; Agricultural contamination』

Introduction
Data collection and analysis
Distribution of minor and trace elements in groundwater
　Variance
　Factor analysis
　Minor and trace elements and water supply
Conclusions
Acknowledgments
References