Lead in shooting ranges : the distribution of lead in various sand fractions using caliber 7.62 ammunition

Authors:

  • Qvarfort Ulf
  • Waleij Annica

Publish date: 2002-01-01

Report number: FOI-R--0614--SE

Pages: 25

Written in: Swedish

Abstract

The Swedish Armed Forces has traditionally used lead for different purposes, mostly in ammunition but also in calbe systems in marine environment and at land in the ground. The use of lead is generally considered to be an environmental hazard. Actions are therefore being taken for the limitation of the negative effects of the use of lead. For instance, the Armed Forces has initiated different research projects to investigate the matter further. The aim of this investigation was to study the distribution of lead in different fractions of sand in a shooting range. Therefore 7.62 m m ammunition was shot against a wooden box filled with sand . Samples were taken, sieved and analysed for total content o flead and copper including the leachable proportion of these elements. After seven months the leaching test was repeated. The results showed that when a 7,62 m m bullit hits a range earthen berm, most of the lead content will be distributed within a distance of 25-30 cm from the target point. Most of the lead is distributed within the fraction interval of <2 mm and the distribution is relatively constant among the smaller fractions. Initially the leachable amount of lead constitutes approximately 0,5 % of the total content, and does not increase substantially within the first seven months. If the leachable fraction increases during the following period of time is yet to be discovered.